hybridfree/eevblog-posts huggingface dataset:
Audiophile(phool) Amplifiers and DACs - Page 1
Forum section: electronics / general

author: Halfdead
author_rank: Contributor
timestamp: May 10, 2013, 01:16:21 am
content: I'd really like to see a teardown of some of these items if you ever get ahold of some, as far as I know most of the price tag is in the branding or advertising for these products and I think it would be nice to see what it's all about.

author: c4757p
author_rank: Super Contributor
timestamp: May 10, 2013, 01:40:03 am
content: My guess? Just a pretty standard, well-built amplifier. Nothing exciting.

author: olsenn
author_rank: Frequent Contributor
timestamp: May 10, 2013, 02:11:32 am
content: QuoteTrue. Some audiophools go overboard with fancy parts like teflon caps and vacuum tubes (which are actually worse than op-amps by the way) but the most technically advanced amps are pretty basic. For example, I have embedded a photo of the O2 headphone amplifier, which is a very high quality, low power design by NwAvGuy.DACs are even simpler; just one IC and some support circuitry like SMD voltage regulators, a reference voltage IC, and some resistors.

author: envisionelec
author_rank: Frequent Contributor
timestamp: May 10, 2013, 02:17:53 am
content: Quote from: olsenn on May 10, 2013, 02:11:32 amEver designed one? There is a lot a person can do to screw up an audio DAC. I've designed them for "high end" companies and believe it or not, design techniques make a difference in measurements and audible results. I used to be a huge skeptic of them until I got into the design. Bottom line: you must pay attention to the datasheet and utilize understood PCB layout techniques to maximize results.

author: Zad
author_rank: Super Contributor
timestamp: May 10, 2013, 02:22:07 am
content: Have a look at this and the related design documents. As used in $50 to $50,000 DAC unitshttp://www.ti.com/product/pcm1792aA massive $6:90 in 1000qty

author: c4757p
author_rank: Super Contributor
timestamp: May 10, 2013, 02:29:34 am
content: Quote from: envisionelec on May 10, 2013, 02:17:53 amThat's true with things like PC motherboards too, but I can still just buy any old one and it'll work fine if I don't need amazing performance.

author: envisionelec
author_rank: Frequent Contributor
timestamp: May 10, 2013, 02:44:57 am
content: Quote from: c4757p on May 10, 2013, 02:29:34 amOk, but that's not exactly the topic of the thread.

author: c4757p
author_rank: Super Contributor
timestamp: May 10, 2013, 02:49:29 am
content: Point taken.

author: amspire
author_rank: Super Contributor
timestamp: May 10, 2013, 03:08:42 am
content: Quote from: Zad on May 10, 2013, 02:22:07 amThanks Zad. 2 channels, 192KHz sampling rate, 0.001% distortion and 127dB SNR for $6.90. That looks a great IC.

author: Halfdead
author_rank: Contributor
timestamp: May 15, 2013, 04:39:06 pm
content: Quote from: olsenn on May 10, 2013, 02:11:32 amThat's actually the AMP/DAC combo I use for my audio setup.Unfortunately the guy designing them and running the blog disappeared last May.
Capacitive touch PCB design - Page 1
Forum section: electronics / general

author: glatocha
author_rank: Regular Contributor
timestamp: May 06, 2013, 04:36:59 am
content: Hi Dave,If I may ask. I would love to see a video about design of the capacitive touch buttons on PCB. What one should consider. How difficult it is and so on.I think your uCalc can be used as a basic for that.Regards

author: smashedProton
author_rank: Frequent Contributor
timestamp: May 06, 2013, 05:36:39 am
content: The implementation of capacitive buttons would also be a great addition.

author: glatocha
author_rank: Regular Contributor
timestamp: May 06, 2013, 05:38:34 am
content: Yes, although, I think would be pretty much application note from any Cap Button controller.
CRT TV teardown - Page 1
Forum section: electronics / general

author: brabus
author_rank: Frequent Contributor
timestamp: April 29, 2013, 01:13:38 pm
content: When I was a kid (1990's) I enjoyed a lot dismantling broken CRT colour TVs.I still remember those BIG Telefunken TVs, the amount of electronic components inside, and the detail of them. Tons and tons of PCBs plugged in a motherboard-fashioned frame, coaxial cables soldered between boards, countless colourful cables all around... those days are gone!Here is an example:http://2.bp.blogspot.com/-6VdIVDo65BU/UFjEvrLVIxI/AAAAAAAAAI4/8QtmTlaphlA/s1600/100_1645.JPGThe whole TV was made arount 3 or 4 main ICs (IF demodulator, RGB separator, MCU and in the luckiest cases the TV-TEXT board). Oh, and the immortal TDA2030 audio amplifier!I used to save all the components I could, so I could avoid to buy them. In a TV you could find a real treasure made of voltage regulators, TTL and CMOS logic ICs, weird analog ICs (I still have some of them), as long as power transistors, buttons, switches, displays and passives!I would really LOVE to see that beauty again.I wonder if you can easily find a colour TV to dismantle in Australia, it would be complicated to send it from the other side of the world!Thank you!

author: free_electron
author_rank: Super Contributor
timestamp: April 29, 2013, 03:02:15 pm
content: Good riddance ! Dinosaur vaccuum tube display ...

author: SeanB
author_rank: Super Contributor
timestamp: April 29, 2013, 03:48:26 pm
content: We had one of those when TV started in 1976 ( I was 9 when it started......) and we had one for about 20 years with no failure, aside from the mains bridge diodes blowing ( they used 1N4004's and the set drew 300W) and the touch controls needing toasting on humid days ( hairdryer was always next to the set after a while). Eventually we gave it away to get one with that unheard of luxury - remote control.
OP amps basics - Page 1
Forum section: electronics / general

author: PbFoot
author_rank: Contributor
timestamp: December 28, 2012, 04:28:07 pm
content: Hi,I'd like a blog on op-amp basics. A good basic topic, with lots of applications.-PbFoot

author: Simon
author_rank: Unknown
timestamp: December 28, 2012, 04:29:30 pm
content: I'd rather see a blog on the more advanced uses, opamp basics are well documented in books etc but they have so many uses it would be good to see the more exotic uses.

author: xDR1TeK
author_rank: Contributor
timestamp: December 28, 2012, 04:43:00 pm
content: ESPECIALLY, single supply shift from dual supply.or for example, removing an opamp and replacing it with raw class type amp.Limiters that can operate on opamps.I will revisit here and add ideas.--------------------------------------------and will never do. life goes on...

author: kyle
author_rank: Contributor
timestamp: April 20, 2013, 01:19:23 am
content: I 2nd this, video on op-amps for beginners would be very helpful.

author: amspire
author_rank: Super Contributor
timestamp: April 20, 2013, 01:40:38 am
content: The free 1200 page book from Analog Devices "Basic Linear Design" by Frank Zumbahlen is almost an essential download for anyone wanting to learn or use opamps.This suggestion came from Chris on one of the Amp Hour podcasts. A great book. Chris said you could buy the dead tree version pretty cheaply as well.http://www.foxcomputer.se/Basic%20Linear%20Design.pdf

author: olsenn
author_rank: Frequent Contributor
timestamp: April 20, 2013, 02:30:57 am
content: Check out "Op-Amps For Everyone" (http://www.ti.com/lit/an/slod006b/slod006b.pdf) and buy the full updated book:http://www.amazon.com/Op-Amps-Everyone-Third-Edition/dp/1856175057/ref=pd_sim_sbs_b_3(Go for the 3rd Edition, not the 4th)
Qi Inductive Wireless Charging device - Page 1
Forum section: electronics / general

author: opablo
author_rank: Regular Contributor
timestamp: December 03, 2012, 05:17:24 am
content: Please tear down and/or review any Qi Inductive Wireless Charging deviceI would love to learn about their induction freq, currents, eficiency, coil characteristics, etc.What do you think ?http://www.energizer.com/portable-power/wireless-chargers/qi-wireless/Pages/default.aspx

author: opablo
author_rank: Regular Contributor
timestamp: April 13, 2013, 04:01:50 am
content: bump.Cm'on... I can't believe nobody likes this idea...

author: colotron
author_rank: Contributor
timestamp: April 14, 2013, 11:44:45 am
content: Yes I do!!!, +1 here.But I will like a teardown + tutorial for this subject: taking apart one and having comments about design tradeoffs and points to consider (when to use it, when not to use it, coil size, coil design, efficiency, power transferred to the load, chip selection parameters).Something similar to Dave's li-ion battery videos.I know, I'm asking too much!!!Cheers.
600USD USB 5GHz spectrum analyzer, TSA5G35 by Triarchy - Page 1
Forum section: electronics / general

author: cosmos
author_rank: Regular Contributor
timestamp: August 23, 2013, 03:03:35 pm
content: http://www.triarchytech.com/product.htmlI have seen this in action at work and it was not too bad.Given the size and cost the performance will of course not be like a full spectrum analyser.It seems to consist of a frontend in a shielded box and a TI CC1111 for filtering and scanning in sections also doubeling as the USB interface.The SW seems like a work in progress but it is usable as it is.We got updated SW that allowed a bit more control than what the datasheet implies.

author: olsenn
author_rank: Frequent Contributor
timestamp: August 23, 2013, 03:27:18 pm
content: I wouldn't trust that heap of junk as far as I could throw it.

author: ovnr
author_rank: Frequent Contributor
timestamp: August 23, 2013, 04:00:57 pm
content: First thing I noticed on their site:QuoteWow. Not the first time I've seen it, but still. Please, people, can we get used to either setting the thread locale to en-US or (god forbid) doing it the right way (using CultureInfo.InvariantCulture on all string<->number conversions)? If you can't even do that, I'm not going to trust you to do much else right!Argh.Also, lol "spectrum analyzer". I think it'd do just as well as a disappointment analyzer, because it'd get more chances to do that than analyze any spectrum!

author: Fraser
author_rank: Super Contributor
timestamp: August 23, 2013, 07:40:56 pm
content: I am old school so use 'real' spectrum analysers that are physical rather than virtual in nature. i.e. they have buttons and knobs and an internal display ! BUT I am fast realising that the development of Software Defined Receivers is leading to some very capable test equipment with otherwise unaffordable specifications.The subject of this thread appears similar in design to the cheap SDR based receivers that are being made using DVB TV USB Dongles and the Fun Cube receiver. uWave downconverters are easily added to the front ends to provide other coverage ranges.There is a difference between a spectrum analyser and spectrum monitor. This unit does look more like the latter but may still be a useful tool.The Signal Hound spectrum analyser has an impressive specification and may be a sign of what is to come in the future of computer controlled test equipment.http://www.signalhound.com/I will embrace such technology if it permits me to own a test capability that would otherwise be unaffordable on a hobby budget

author: cosmos
author_rank: Regular Contributor
timestamp: August 23, 2013, 08:01:13 pm
content: For the signalhound level price you can start looking at Spectran too. ( no tracking generator options though)http://www.spectran.com/Handheld_Spectrum_Analyzer.htmI agree that the TSA5G35 may be junk, but if the target is spectrum monitoring and size matters there might still be a use for it.
marketing a product [stuff after you finish designing it] - Page 1
Forum section: electronics / general

author: VEGETA
author_rank: Super Contributor
timestamp: April 07, 2013, 11:43:19 pm
content: This was something unclear to me and it is now.how about doing a video or video series (anything) about these things:- making a good enclosure (housing) of the product in a way that is suitable for marketing a pro product.- a complete way to manufacture the product. morelike how to arrange between pcb manufacturing, housing and other stuff.- how to actually sell the product online or in any way, this is the most important one.what do you say?thx

author: Psi
author_rank: Super Contributor
timestamp: April 08, 2013, 02:33:31 am
content: Quickest way to make a professional looking case for low quantity products is an extruded aluminum case and PCB printed front/back panels.Later on you can always move to plastic front/back panel manufacturing without any changes to the product.Check out Mike's video

author: gxti
author_rank: Frequent Contributor
timestamp: April 08, 2013, 04:16:38 am
content: If you don't want the hassle of operating your own storefront, tindie.com is great. You'll also get extra traffic from people browsing around.

author: 0xFFFF
author_rank: Contributor
timestamp: April 08, 2013, 05:55:19 am
content: Thanks for the link Psi. I'm going to try this on my next project
keithley 2015/E - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: April 01, 2013, 07:47:24 pm
content: HiIs it possible to see a teardown of this meter and maybe see how the THD measurement works?thanks.

author: plesa
author_rank: Frequent Contributor
timestamp: April 01, 2013, 08:05:26 pm
content: The principle is described in the manual on Keithley website in the user manual:http://www.keithley.com/products/dcac/audioanalyzer/?path=2015/Documents#5The schematic is not available as far as i know.The Model 2015 can make distortion measurements from 0.002% to 100% (-94dB to 0dB).The 2015 uses a digital signal processor (DSP) to perform a fast Fourier transform on the signalapplied to the front or rear voltage inputs. It then analyzes the levels of the harmonics present inthe signal to calculate THD, THD+noise, and SINAD. A direct digital synthesis moduleincluded in the distortion circuitry provides a programmable sine source. The source has asecond output that can provide the inverse of the sine output (shifted 180°), or output 0-5V logiclevel pulses in phase with the main output. Distortion measurement types are explained below:• THD — Total harmonic distortion is the default distortion measurement type. It isexpressed in percent or dB. The measurement is calculated as follows:where hi is magnitude of the ith harmonic and f is the magnitude of the fundamental waveform.• THD+n — This is total harmonic distortion plus noise. It is what conventional (analog)THD meters display. A conventional THD meter has a notch filter that removes thefundamental frequency from the signal, and measures THD based on what remains. Thisincludes all of the harmonics, but also includes any random noise in the signal. Since theModel 2015 uses a DSP to perform a Fourier transform on the signal, noise can beeliminated from the distortion measurement, thus providing a true reading. Thismeasurement is expressed in percent or dB, and is calculated as follows:where h is the harmonic, n is the noise, and f is the magnitude of the fundamental waveform.• SINAD — This is another way of expressing THD+noise. It is the RMS magnitude ofthe signal divided by the RMS magnitude of the difference between the signal and thefundamental. This measurement is expressed only in dB. The calculation is as follows:where h is the harmonic, n is the noise, and f is the magnitude of the fundamental waveform.The digital averaging filter (moving or repeating) can be used with distortion measurements.The RATE key has no effect on distortion measurements, because there is no NPLC setting.
Add .asc to allowed file types  - Page 1
Forum section: electronics / general

author: croberts
author_rank: Regular Contributor
timestamp: April 23, 2013, 02:42:15 am
content: LTspice is used by so many members it would be great if LTspice Schematics (.asc) could be added to Allowed File Types.

author: BravoV
author_rank: Super Contributor
timestamp: April 23, 2013, 02:44:07 am
content: Made same request last year ->https://www.eevblog.com/forum/suggestions/allow-asc-as-attachment/

author: croberts
author_rank: Regular Contributor
timestamp: April 23, 2013, 02:53:10 am
content: Quote from: BravoV on April 23, 2013, 02:44:07 amMaybe now that two of us (groundswell) have made the suggestion............

author: c4757p
author_rank: Super Contributor
timestamp: April 23, 2013, 02:58:49 am
content: Nice idea, but I doubt it's simple with this forum software, and it takes two seconds to just rename it to .txt...

author: Monkeh
author_rank: Super Contributor
timestamp: April 23, 2013, 07:53:14 pm
content: Quote from: c4757p on April 23, 2013, 02:58:49 amWhat makes you think it's hard?

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 23, 2013, 08:11:50 pm
content: Quote from: Monkeh on April 23, 2013, 07:53:14 pmWell, because it takes more than a year to get it implemented?

author: c4757p
author_rank: Super Contributor
timestamp: April 23, 2013, 08:20:56 pm
content: Quote from: Monkeh on April 23, 2013, 07:53:14 pmAn asinine assumption. A quick Google search shows it's actually rather easy.

author: Monkeh
author_rank: Super Contributor
timestamp: April 23, 2013, 08:23:49 pm
content: Quote from: c4757p on April 23, 2013, 08:20:56 pmQuite. This is not the 90s.

author: BravoV
author_rank: Super Contributor
timestamp: April 25, 2013, 01:47:11 am
content: If its the matter of limited entries for extension types, then just use the entry for .BMP, I believe no one ever used it now anyway.

author: c4757p
author_rank: Super Contributor
timestamp: April 25, 2013, 01:50:02 am
content: Quote from: BravoV on April 25, 2013, 01:47:11 amTheyhaveandholy shitis it annoying. Yeah, Dave,pleaseban BMP while you're at it.
what about running a build along series? - Page 1
Forum section: electronics / general

author: gineer
author_rank: Newbie
timestamp: March 20, 2013, 06:21:55 pm
content: Hi Dave,what about running a build along series.The idea here is that you pick some thing like a Quadcopter or Delta robot or a CNC machine which you build over a series where each episode requires your audience to follow along. These kind of projects are fun, especially if you can keep the monthly costs below $100.00 (This is normally acceptable for the Finance Director in my house ;-).Something that would not only be educational, but useful afterwards.Just a thought.
Scope probes - Page 1
Forum section: electronics / general

author: dexters_lab
author_rank: Unknown
timestamp: March 27, 2013, 11:40:04 pm
content: Would be great to see an explanation of different scope probes and when certain types are better in certain situations.Would also be good to see a comparison between cheap and more expensive ones.Have certainly learned a few things about scopes watching Dave so i am sure there are a few more easy tips out there!

author: bitwelder
author_rank: Super Contributor
timestamp: March 29, 2013, 06:44:16 am
content: While Dave gets busy to make such a video, I'd suggest to start withw2aew's one:

author: Nermash
author_rank: Frequent Contributor
timestamp: March 29, 2013, 07:33:38 am
content: Here you go, from the golden era of Tektronix:http://youtu.be/41e2k9TVSj0I just saved Dave a hell of a lot of time, now he can take the rest of the day off

author: dexters_lab
author_rank: Unknown
timestamp: March 29, 2013, 03:54:26 pm
content: thanks guys!
Switchmode converters and topoloogies (#110 follow-up) - Page 1
Forum section: electronics / general

author: McMonster
author_rank: Frequent Contributor
timestamp: March 11, 2013, 11:00:37 pm
content: MC34063a boost converter video was interesting but what I miss is a more general roundup of SMPS topologies, at least the basic ones. Basic principles of operation, applications, popular driver ICs, maybe some word on component selection.

author: Jakob2803
author_rank: Contributor
timestamp: March 18, 2013, 08:21:38 pm
content: Yes I would be very interested in this as well. How about doing a quick "lets design an offline SMPS"?I realise the safety concern, but it would be nice to see it done. O0

author: tom66
author_rank: Super Contributor
timestamp: March 20, 2013, 02:45:47 pm
content: Dave has openly stated he does not work around 240VAC if he can avoid it. I would have preferred to see him make an isolated flyback for the uSupply instead of a DC-DC module, but he elected not to, probably for his own sanity.
Where is industry story time gone? - Page 1
Forum section: electronics / general

author: ddavidebor
author_rank: Super Contributor
timestamp: March 16, 2013, 06:41:21 pm
content: Hi daveI've loved the few industri story time video...Why you don't make a new one?You need only a few minutes

author: hlavac
author_rank: Frequent Contributor
timestamp: March 25, 2013, 07:04:05 pm
content: QuoteThe Amp Hour?

author: EEVblog
author_rank: Unknown
timestamp: March 25, 2013, 09:44:20 pm
content: Yeah, I do talk about that kinda stuff on the Amp Hour fairly regularly.It's not something that makes for good video really, when I don't have anything in the way of hardware or docs to shows off etc.Dave.
Forum suggestion - Page 1
Forum section: electronics / general

author: Involute
author_rank: Contributor
timestamp: March 17, 2013, 09:36:55 pm
content: If you refresh the CAPTCHA beneath a post you're entering because you can't figure it out, the refresh erases your post. Since you're not likely to enter/refresh the CAPTCHA until after you've completed (but, of course, not submitted) your post, you're screwed and have to re-enter it. Fortunately, I'd made a copy of mine out of habit, but it would be much friendlier to preserve a post when refreshing.

author: EEVblog
author_rank: Unknown
timestamp: March 17, 2013, 09:59:40 pm
content: That'll go away in a few more posts. Only newbies have to enter the captcha for the first few posts.Dave.
Please turn down the sound effects a little - Page 1
Forum section: electronics / general

author: MeganVonTincan
author_rank: Newbie
timestamp: March 16, 2013, 02:14:01 pm
content: Have you ever tried listening to an EEVblog episode with headphones or earbuds on? If so, are you like me and feel the sounds effects during the closing credits (while very cool) are just a little too loud? It made me almost fall off the treadmill this morning! Is it my imagination or are the sound effects 10x louder than Dave's voice?

author: AndyC_772
author_rank: Super Contributor
timestamp: March 16, 2013, 05:34:09 pm
content: I find the audio is always really quiet during the videos. To hear it properly on my laptop I always have to turn on a (nasty) 'level equalisation' DSP effect on my sound card as well as turning the volume up.
PCB Serial bus - Page 1
Forum section: electronics / general

author: shadowcomputer
author_rank: Newbie
timestamp: March 11, 2013, 09:52:08 pm
content: Hey Dave, I would love it if you would do a video blog on I2C and SPI communications between devices on a PCB. I would love to see how to create the board layout and connections, as well as examples in C of how to communicate between devices using I2C, with your tips and advice for young players.Thanks
Simple Wireless for Microcontrollers - Page 1
Forum section: electronics / general

author: tylerl
author_rank: Contributor
timestamp: March 10, 2013, 10:18:45 pm
content: Ideas for blogs dealing with RF and wireless have been proposed, but I would suggest winnowing the topic down to something a bit more manageable:Sample problem:Dave wants to add a wireless display option for his power supply.Of course you do.And we want to do this as simply and cheaply as possible.Solutions worth considering:Do it all from scratch; roll your own transmitter, receiver, OTA protocol, etc.not bloody likelyXBee, Bluetooth, etc. Simple as dirt, expensive as hell.No... just no.Use a cheap SPI <-> RF module like thenRF24L01+Dirt cheap, some assembly required.Winner!So we pick the cheap nF24L01+. Now, how do wire this up? Particularly, we've got to attach an antenna -- do we do a trace antenna? A chip antenna? Wire? How do you arrange your antenna with respect to your ground plane? How to you couple your antenna with your lead line? And then there's testing, efficiency, metrics... how does antenna gain work? How does that compare with transmitter power?As you can see, the real-world engineering problems are both interesting and quickly solvable. It's simple once you understand it but black-magic before you do - that sort of material makes for great tutorial content. You could probably even get 2 or 3 very popular videos out of this one problem set, much like Lab Power Supply design series.
Teardown tuesday sugguestion - Page 1
Forum section: electronics / general

author: smashedProton
author_rank: Frequent Contributor
timestamp: March 04, 2013, 11:14:50 pm
content: http://www.electronicsurplus.com/Item/1506/Tektronix%20-%20Oscilloscope%20Camera_%20-%20C-5C/I have found an oscilloscope camera. Show us dave!

author: uprightsquire
author_rank: Contributor
timestamp: March 04, 2013, 11:23:29 pm
content: Buy it and send it in!If itonlycost 3x as much to post it I would be really surprised.

author: VEGETA
author_rank: Super Contributor
timestamp: March 05, 2013, 12:37:48 pm
content: I actually find tear down Tuesday worse than other episodes. cuz it's only focused upon oscilloscopes and so...I suggest tearing down something other than scopes and meters... like PS2 ^_^

author: PA0PBZ
author_rank: Super Contributor
timestamp: March 05, 2013, 12:45:55 pm
content: Quote from: VEGETA on March 05, 2013, 12:37:48 pmhttp://www.eevblog.com/2013/01/20/eevblog-412-jawbone-up-pedometer-teardown/http://www.eevblog.com/2013/01/16/eevblog-410-microtek-8086-in-circuit-emulator-teardown/http://www.eevblog.com/2013/01/09/eevblog-409-edmi-smart-meter-teardown/http://www.eevblog.com/2012/12/12/eevblog-397-turnigy-accucel-6-charger-teardown/And I guess todays item will not be a scope either:
FFT Topic - Page 1
Forum section: electronics / general

author: RichardD
author_rank: Newbie
timestamp: February 03, 2013, 10:11:48 pm
content: Hi Dave - It would be great if you could do a video on FFT. For example the Agilent scopes you have reviewed have an FFT function built in and there are some general instructions available from Agilent and others about what the FFT function performs. But there are a lot of questions that aren't explained -- from a "hands on" perspective. For example, when to use a specific windowing function, why doesn't the fundamental spur start at 0db, usability of scopes like the Agilent MSO 2000/3000 for audio distortion measurements and what limits them, FFT for troubleshooting analog or digital circuits - that sort of stuff that you are so good at explaining! Cheers, Richard.

author: smashedProton
author_rank: Frequent Contributor
timestamp: February 14, 2013, 04:35:20 am
content: 1 up

author: NiHaoMike
author_rank: Super Contributor
timestamp: February 14, 2013, 06:00:34 pm
content: Also add an introduction on efficiently implementing it on a DSP and/or FPGA.

author: raymond2000
author_rank: Contributor
timestamp: March 03, 2013, 12:34:47 am
content: good interesting topic
basic circuits - Page 1
Forum section: electronics / general

author: fusekiller
author_rank: Newbie
timestamp: February 13, 2013, 07:19:59 am
content: Hi,thanks for all the excellent blog videos so far!I'd like to see a video of some basic beginner stuff like basic circuits of transistors, mosfets, opamps etc.Not how to calculate current, resistors etc. exactly (that can be looked up easily) but from a practical view.Personally, I'd like to have the following questions answered:* When to use a transistor or a mosfet for switching* what what are reasonable resistor/transistor (or mosfet?) combinations for current amplification of digital signals

author: smashedProton
author_rank: Frequent Contributor
timestamp: February 14, 2013, 04:34:39 am
content: Ben Krasnow has some good shit, so does afrotechmods

author: KuchateK
author_rank: Regular Contributor
timestamp: February 19, 2013, 08:45:29 pm
content: Not only digital, analog too.I really enjoyed Ben's video about transistors. Even if I knew most of this stuff it was interesting, useful and great memory refresh. I would love to see whole series of videos like that.

author: shadowcomputer
author_rank: Newbie
timestamp: March 11, 2013, 09:53:56 pm
content: I second the idea. I would love to see a video on choosing transistors for projects!

author: McMonster
author_rank: Frequent Contributor
timestamp: March 11, 2013, 10:48:28 pm
content: I think I see this posted every once in a while. The problem is there's so many applications for a transistor that it's hard to cover even the basics in a single video. If you watch all Dave's videos you can catch a lot of small bits that add up nicely with some additional readings (like The Art of Electronics for example) and tutorials.

author: dark_hawk
author_rank: Regular Contributor
timestamp: March 15, 2013, 04:57:40 pm
content: Watching dave make some basic circuits would be really nice.Notice how the 3 parts soldering tutorials are among the top 5 viewed videos on the blog because I think they are a aimed mainly at the newbies like us.
PCB design video tutorials - Page 1
Forum section: electronics / general

author: VEGETA
author_rank: Super Contributor
timestamp: March 16, 2013, 12:23:26 pm
content: Hi... My suggestion is to have videos that explains how to design a PCB using Eagle or any other good, widely-used software.so, what do you think?

author: Thor-Arne
author_rank: Unknown
timestamp: March 16, 2013, 02:01:27 pm
content: Dave already made some videos on laying out PCB's with Altium Designer.To make specific ones for each one would be very difficult as this can only be done for the EDA packages one knows. There's probably tutorials for the different packages out there.Some general design videos that explains various concepts might be a good idea.

author: VEGETA
author_rank: Super Contributor
timestamp: March 17, 2013, 05:15:24 am
content: give me links of these Altium Designer videos please.I searched episodes list but didn't find any PCB tutorial.thanks

author: Rerouter
author_rank: Super Contributor
timestamp: March 17, 2013, 05:26:04 am
content: are you referring more; how to use the cad packages or more towards actually how to lay out a pcb in general?

author: Thor-Arne
author_rank: Unknown
timestamp: March 17, 2013, 07:28:41 am
content: Since they are not dedicated PCB tutorials they can be hard to spot right away.Here are two about PCB design for manufacture#127and#239.And from the PSU design videos:#244and#245.
Serial Data Communication Standards... - Page 1
Forum section: electronics / general

author: Chad1
author_rank: Contributor
timestamp: January 10, 2013, 09:00:52 pm
content: What about a video which explains theconcept of serial data communication and most of its standards(RS232, RS485, CAN, Ethernet, USB, ...)? This topic never came close to being addressed in school, but it would have helped me greatly in the early stages of my job. I think Dave could provide excellent commentary on this subject that would appeal to "young players." Anyone else agree?

author: McMonster
author_rank: Frequent Contributor
timestamp: January 12, 2013, 05:16:52 am
content: Sounds interesting to me.

author: JoannaK
author_rank: Frequent Contributor
timestamp: January 12, 2013, 05:33:05 am
content: Man.. you are talking about entire Polytech course or more stuff there. For example ethernet alone has the hardware specs and requirements, multiple software layers and plenty of official standards.But It would be interesting to see what he gets out of those.

author: nitro2k01
author_rank: Frequent Contributor
timestamp: January 12, 2013, 12:32:12 pm
content: Ethernet and USB are really more intelligent protocols that you probably won't interface directly with anyway. (But through glue logic.) But RS232, RS485, CAN, SPI, I2C, those are thing that can reasonably scoped, and even bitbanged if one were so inclined. A video series on the simpler communication protocols, touching on both physical stuff (voltage levels etc) and the protocol would be great.

author: JoannaK
author_rank: Frequent Contributor
timestamp: January 12, 2013, 08:52:01 pm
content: Quote from: nitro2k01 on January 12, 2013, 12:32:12 pmJust a minor Nitpick.. Usb is bitbangable () at the lowest speed. Also many sub2$ chips have full usb 2.0 compatible build in hw, so it's not as far fetched. It's definitely in intermediate category topic, but so is CAN.

author: Chad1
author_rank: Contributor
timestamp: January 17, 2013, 03:11:05 am
content: I agree with all of you. This topic covers enough material to warrant its own course. But so does a lot of things Dave talks about. I'm saying just cover the basic ideas over a ~40 minute video. Or make it a trilogy of videos to be more thorough. It would certainly be the only one of its kind on the net (trust me, I've scoured it).

author: KuchateK
author_rank: Regular Contributor
timestamp: February 19, 2013, 07:27:09 pm
content: I would love to see video like that. I don't want complicated polytechnic stuff. I want Dave's interpretation that is condensed and easy to understand. All the essentials and real life important stuff without everything boring and useless.
Impedance Mismatch - Page 1
Forum section: electronics / general

author: kfitch42
author_rank: Frequent Contributor
timestamp: January 30, 2013, 07:27:57 pm
content: I would enjoy a video where you delved into impedance mismatch. E.g. use 50 Ohm cable with 75 Ohm termination( or 'forget' to terminate). Show how bad it is, when does it matter (i.e. do I care at DC, 1kHz, 1MHz, 1GHz...) You could show it on both a o'scope and a SpecAn.

author: SeanB
author_rank: Super Contributor
timestamp: January 30, 2013, 08:04:15 pm
content: Look at W2AEW's YT channel, it is there.........

author: kfitch42
author_rank: Frequent Contributor
timestamp: January 30, 2013, 08:58:05 pm
content: Thanks for the pointer, that looks like a very nice channel.
Schematic drawing basics - Page 1
Forum section: electronics / general

author: CarlG
author_rank: Regular Contributor
timestamp: January 27, 2013, 12:38:23 am
content: I think a blog about basic principles of schematic drawing could be interesting, and useful for many newbies. On the other hand, are there any universal "basic principles"? Surely there are lots of opinions about what a "good" schematic should look likeFor instance, is there a consensus about "signal flow left to right as default " as a general rule?A schematic's most important goal is, as I see it, to define the electrical connections. Beside that, is think basic aims for the schematic includes making it possible to follow the signal flow rather easily, and give an understanding the function of the design. The two latter aims does of course not conflict with the first. However, I've seen examples of single sheet designs with no wires drawn between the functional parts, just "connected" by the node names. OK or not? What about a multisheet schematic without top level sheet?Example of details that could be covered:- making a symbol (e.g. placing I/Os)- signal naming conventions- connections conventions- single/multisheet schematics- multisheet: what function should come first?- when is a design description needed?Cheers

author: free_electron
author_rank: Super Contributor
timestamp: January 27, 2013, 06:08:47 am
content: Make custom symbols to avoid crossing linesMultisheet is fine but clearly label signals going offsheet and what sheet they go to. If they go to multiple sheets ( like busses ) refer them to the toplevel and show the bus there.Toplevel is first sheet. Toplevel should read like a block diagram.Netnames do not leave sheets. Anything that leaves a sheet uses a port. Thats what those things are intended for.Rearrange parts and pins to minimize crossings of wires. Use clear signal names on pins of components. Netnames should have a meaning.
Update the torrents in time - Page 1
Forum section: electronics / general

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 10, 2013, 01:48:42 am
content: Please update the torrents more frequently if you want people to actually use them. They're an excellent way to offload bandwidth use from the web server.http://bitlove.org/eevblog/torrent

author: EEVblog
author_rank: Unknown
timestamp: January 10, 2013, 05:12:44 am
content: The torrents are updated as quickly as bitlove.org can suck down the file and generate the torrent. This is down automatically as soon as I post the blog.The eevblog.org server is currently down and I cannot upload the latest episode. This is not a fault of bittorrent, bitlove, nor me not updating anything in time.Dave.

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 10, 2013, 06:19:51 am
content: It's not possible to upload a copy directly to the tracker?

author: EEVblog
author_rank: Unknown
timestamp: January 10, 2013, 07:28:05 am
content: Quote from: NiHaoMike on January 10, 2013, 06:19:51 amI see no option to do that. Bitlove just takes RSS feeds and does the rest.Dave.
Here's a slam dunk for you Dave - Two power supplies combos. - Page 1
Forum section: electronics / general

author: george graves
author_rank: Super Contributor
timestamp: December 19, 2012, 01:56:24 am
content: Just something you haven't covered yet - and I bet you have some good insight into.That is connecting two bench-top power supplies to be used at once. For +/- voltages, more (voltage, current?) and how to do it properly. Oh, and all the "traps for young players" as you like to say. Grounding issues, mains,circuit protection.Might be a nice follow up to the o-scope ground video you did.

author: fenclu
author_rank: Regular Contributor
timestamp: January 09, 2013, 06:20:02 pm
content: +1I'd love to see that...

author: nitro2k01
author_rank: Frequent Contributor
timestamp: January 09, 2013, 07:48:36 pm
content: Not really the same thing, but this episode might be a good watch for a start:
Magazine insert teardown? - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: December 31, 2012, 08:55:43 pm
content: Dave, were you planning on doing a teardown of the magazine insert sent to you a little while back?

author: nitro2k01
author_rank: Frequent Contributor
timestamp: December 31, 2012, 11:17:54 pm
content: Seehttps://www.eevblog.com/forum/suggestions/mailbag/

author: EEVblog
author_rank: Unknown
timestamp: January 06, 2013, 06:08:43 am
content: Yeah, I was, but it's kinda taken a back-burner.Dave.
Experiments with IR thermal camera - Page 1
Forum section: electronics / general

author: bitwelder
author_rank: Super Contributor
timestamp: December 30, 2012, 09:26:04 am
content: If Dave has another chance to borrow one of those nice (FL)IR cameras, I think it would be interesting to run a few experiments or conditions looked from the thermal picture.For instance, watch heat diffusion while soldering a tiny vs a large component.

author: SeanB
author_rank: Super Contributor
timestamp: December 30, 2012, 10:21:31 am
content: I think that will be a Mike project, as he has both the camera and a lot of boards he makes to do it with.
Blog Request - Page 1
Forum section: electronics / general

author: bpn1028
author_rank: Newbie
timestamp: November 22, 2012, 03:29:07 am
content: Hey Dave... Really love your videos. I am just a hobbyist for less than a year now and have learned a ton from your videos. I have seen you re-engineer circuits such as you just did in #388 blog and others, but, I would really benefit from a blog on how you go about doing that. The techniques, where you start, the tools, etc.... I personally think it would make for a great video. Please consider.... Thanks for all you do.

author: bpn1028
author_rank: Newbie
timestamp: November 22, 2012, 03:38:12 am
content: I really meant to say reverse engineer as opposed to re-engineer... Of course in the case of #388 - it appears re-engineering is in order.

author: TriodeTiger
author_rank: Regular Contributor
timestamp: November 22, 2012, 04:43:35 am
content: Quote from: bpn1028 on November 22, 2012, 03:38:12 amI sort of can't imagine this being a video blog topic, I mean crack open a 3V wall adapter you can spare and try to trace out what it is doing.Once you learn "Oh, that's must be a switcher with optoisolator feedback" and you can easily trace what parts go where. I suppose that's where experience comes in.ICs you've seen dave use his microscope, or a bit of spit to rub off plastic shavings to try to see what the manufacturer tried to hide :-)If you know its a voltage regulator supplying a ...checks...3.3V rail.. or NMOS or whichever 3-legged thing you can substitute without knowing the part, etc.

author: free_electron
author_rank: Super Contributor
timestamp: November 22, 2012, 05:30:21 am
content: In order to effectively reverse engineer , you must first get a lot of knowledge about various circuits, the underlaying concepts etc. if i just give you a bunc of parts you will have no clue what it is doing. Someone who has never seen an off line power supply will have no idea what the optocoupler is for... Or the tl431 reference diode.Get familiar with as much circuitry as possible. Take service manuls of equipment and read them. Learn to recognize functional blocks.Learn all about components. The different types of caps and their applications, different types of resistors etc... You need a lot of knowledge to reverse engineer well.

author: xDR1TeK
author_rank: Contributor
timestamp: December 28, 2012, 05:07:23 pm
content: There is a huge difference between experience and knowledge. You might be asking for Dave's full mind to unfold. Much of his knowledge is acquired from basic theoretical concepts. The rest is just by transfer experience. Tips and Tricks. etc. You might try to convince yourself that academic refinement is a load of crap, but it is not. Any experience you might want to get in life will make no sense to you if you at least don't have the basics.So, no, Dave's mind unfolding before you will make little sense if you don't take things slower.I know because my thirst is never quenched, and the more i learn the more I find that I know nothing.
LCR meter vs oscilliscope and function generator - Page 1
Forum section: electronics / general

author: ftransform
author_rank: Frequent Contributor
timestamp: December 23, 2012, 03:37:01 pm
content: So in the spirit of your filter testing via FG/Osc why not make a video showing the in's and outs of measuring L and C using the setup, and perhaps offer some comparisons between this method and using a LCR meter.
New Episode Content - Page 1
Forum section: electronics / general

author: xDR1TeK
author_rank: Contributor
timestamp: December 20, 2012, 01:02:12 am
content: Hi all, how can we ask Dave to make an episode on a specific topic?I am interested in controllers with capacitive touch ability.Need to know about what happen and the mechanism behind it.

author: PeterG
author_rank: Frequent Contributor
timestamp: December 20, 2012, 01:07:07 am
content: That would be an interesting video.Regards.

author: notsob
author_rank: Frequent Contributor
timestamp: December 20, 2012, 01:25:24 am
content: Georgios has some capacitive touch stuff over at pcbheaven.com

author: EEVblog
author_rank: Unknown
timestamp: December 20, 2012, 02:32:51 am
content: I've moved this to the suggestions topic.Consider it noted.A video like that requires quite some work, because you have to build something to demo etc.But yes, it would be interesting.Dave.

author: xDR1TeK
author_rank: Contributor
timestamp: December 20, 2012, 10:10:46 pm
content: yey, this is so cool

author: Thor-Arne
author_rank: Unknown
timestamp: December 20, 2012, 11:23:15 pm
content: Yes, very interesting topic.I.e. for PCB front panels with capacitive switches.

author: xDR1TeK
author_rank: Contributor
timestamp: December 20, 2012, 11:38:12 pm
content: Or something like sliding your finger on a strip of plastic or glass and causing a led to dim or get brighter.
rare components and mysterious electronics applications - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: December 18, 2012, 12:46:07 pm
content: please do a blog about some of not well knowned and mysterious-rare electronics like:tunnel diodesvaricapsLambda diodes with FETs...e.t.c.and some uses of themlike dip metersdynatron oscillators...e.t.c.in short words ...the most hockus-pokus ever

author: SeanB
author_rank: Super Contributor
timestamp: December 18, 2012, 03:38:12 pm
content: How about backwards diodes, our good old Gunn diode ( which is not really a diode other than it has 2 terminals) and Impatt diodes.....

author: Unknown
author_rank: Unknown
timestamp: December 18, 2012, 05:54:56 pm
content: Quote from: SeanB on December 18, 2012, 03:38:12 pmi love it..!!complex tunnel semi roX

author: xDR1TeK
author_rank: Contributor
timestamp: December 28, 2012, 12:14:45 pm
content: There are many components that in today's standards are few in numbers. Some are deprecated and no longer in production (discontinued).The only ones I truly miss are the the phosphorus 7 segment displays found on calculators and such.Not rare though but they werememorizingmesmerizing.

author: SeanB
author_rank: Super Contributor
timestamp: December 28, 2012, 02:45:06 pm
content: And then you come to holloware and the many funny units that are available in that form, with assorted functions. There are so many ways to make a simple diode do things.

author: jeroen74
author_rank: Frequent Contributor
timestamp: December 28, 2012, 10:20:27 pm
content: QuoteVacuum Fluorescent Displays are still widely used in home AV equipment, Point of Sale terminals, industrial equipment, lab equipment, those printing desktop calculators etc. So it's far from an obsolete technology.The reason you don't see them in battery powered calculators is simply power consumption. LED and VFDs in that application disappeared overnight when LCD technology took off.
CFL - Page 1
Forum section: electronics / general

author: timelessbeing
author_rank: Frequent Contributor
timestamp: December 18, 2012, 07:14:21 pm
content: Dear Dave.It would be great if you could tear down a compact fluorescent bulb, give a reverse engineered circuit diagram, probe the outputs on your scope, measure the efficacy with your light meter etc.Cheers from Canada.

author: mariush
author_rank: Super Contributor
timestamp: December 18, 2012, 07:43:51 pm
content: This guy tested a lot of cfl lamps and "reverse engineered" the circuits in them and explains pretty well how they work:http://www.pavouk.org/hw/lamp/en_index.htmlHope it helps.

author: Thor-Arne
author_rank: Unknown
timestamp: December 18, 2012, 08:02:17 pm
content: Quote from: mariush on December 18, 2012, 07:43:51 pmWow, you really put a lot of effort in this.Thanks for sharing.

author: mariush
author_rank: Super Contributor
timestamp: December 18, 2012, 08:10:33 pm
content: It's not *my* page, thank the guy on that page. I just bookmarked it a while ago, when there was another discussion - i believe- in this very same forum.

author: Thor-Arne
author_rank: Unknown
timestamp: December 18, 2012, 08:16:14 pm
content: Quote from: mariush on December 18, 2012, 08:10:33 pmAh, Ok. Thanks anyway. And the one who made it of course.
new super simple e-reader review - Page 1
Forum section: electronics / general

author: marcosgildavid
author_rank: Contributor
timestamp: November 22, 2012, 12:11:04 pm
content: Hi,Please have a look at this:http://us.txtr.com/beagle/Since Dave likes to teardown e-book readers, this one should be interesting.When can we expect a detailed review?

author: peter.mitchell
author_rank: Super Contributor
timestamp: November 22, 2012, 01:21:42 pm
content: I saw this, thought it was interesting, you shouldn't expect a review any time soon though, Dave is a very busy man, and if he did reviews on everything suggested he wouldn't get anything else done

author: marcosgildavid
author_rank: Contributor
timestamp: December 04, 2012, 02:37:17 pm
content: Quote from: peter.mitchell on November 22, 2012, 01:21:42 pmI don't expect a review, I was kind of joking..I should have put "detailed" in quotation marks ;-)