Marketing BS: power supply with airplane radar technology, 0.1uV noise - Page 1
Forum section: electronics / general

author: Kjelt
author_rank: Super Contributor
timestamp: June 21, 2016, 07:47:00 am
content: OMG what marketing departments can generate such BS to sell their stuff, this probably simple noise canceling circuit is sold as jet fighter based technology.Besides they claim a whopping rediculous low noise of 0,1uVI wish we could have a schematic or tear it down session about this one from Dave.http://ifi-audio.com/portfolio-view/micro-iusb3-0/

author: System Error Message
author_rank: Frequent Contributor
timestamp: June 21, 2016, 08:15:08 am
content: SAAB anyone? Though in the case of SAAB they really did make good cars.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 21, 2016, 08:20:54 am
content: Internal pics herehttp://www.computeraudiophile.com/f6-dac-digital-analog-conversion/ifi-iusb-3-0-universal-serial-bus-industry-standard-cables-connectors-and-communications-protocols-between-computers-and-electronic-devices-regenerator-xxx-pictures-25985/

author: rsjsouza
author_rank: Super Contributor
timestamp: June 21, 2016, 09:07:49 am
content: Quote from: mikeselectricstuff on June 21, 2016, 08:20:54 amThanks for sharing. Nothing spectacular, apart from some review highlights...QuoteQuoteBut I now found out what audiophiles are really aiming:Quote

author: Kjelt
author_rank: Super Contributor
timestamp: June 21, 2016, 09:12:33 am
content: Quote from: mikeselectricstuff on June 21, 2016, 08:20:54 amThanks, let's see, looks like a Walt Jung kind of psu design, 1uV would be ok, 0,1uV doubt it.Sancon VT series elco's hmmmmm don't know Sancon personally, crap or decent? Anyone?Build quality: ouch, looks bad, one of the fet's placed off the pads, how does this pass QC ?Also the solderquality, amounts used , i don't find it pretty looking, anyone else comments?Mike what are your thoughts ?

author: wraper
author_rank: Unknown
timestamp: June 21, 2016, 09:58:23 am
content: Quote from: Kjelt on June 21, 2016, 09:12:33 amSuncon is former Sanyo, actually they always were Suncon, just as subsidiary of Sanyo and sold under Sanyo brand, now they are on their own, very good capacitors. Smaller RVT seem to be ELNA.

author: tom66
author_rank: Super Contributor
timestamp: June 21, 2016, 10:01:26 am
content: Why on earth is anyone using USB 3.0, capable of carrying high definition video, for audio?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 21, 2016, 10:01:54 am
content: If you have aperipheral that can realistically be improved by a unit like this, then you should probably be looking at using a better designed peripheral, as it is a far better engineering solution to do everything in one box than try to fix it externally.Just like all the 'cleaner mains' BS in the hifi world- unnecessary if the PSU is designed properly in the first place.But of course the audio world has far less to do with real engineering than marketing bollocks.

author: CJay
author_rank: Super Contributor
timestamp: June 21, 2016, 10:45:38 am
content: I was going to ask how the hell they improve jitter with what looks like a bog standard, hand soldered cheap USB3 hub chip and a cheap arse TCXO (at best) oscillator module but then I realised we are talking audiophool idiocy.IMHO, the best way to improve signal to noise ratio on any audiophool equipment is to dip the audiophool in liquid nitrogen for a couple of hours.

author: dannyf
author_rank: Super Contributor
timestamp: June 21, 2016, 11:06:22 am
content: "SAAB anyone? Though in the case of SAAB they really did make good cars."Yeah. Their cars were so good that they driver Saab into bankruptcy.

author: timofonic
author_rank: Frequent Contributor
timestamp: June 21, 2016, 11:22:19 am
content: Quote from: dannyf on June 21, 2016, 11:06:22 amReally? Is that sarcasm?

author: CJay
author_rank: Super Contributor
timestamp: June 21, 2016, 12:26:13 pm
content: Quote from: dannyf on June 21, 2016, 11:06:22 amGM forced them into bankruptcy, not because the cars weren't good (though the low end cars which were GM clones were, like most GM cars, crap) but because they refused to allow the sale to a Chinese consortium for 'IP' reasons.

author: Kjelt
author_rank: Super Contributor
timestamp: June 21, 2016, 01:14:08 pm
content: mwaah that was the last minute before 12, long before the consortium was already bankrupt and selling it to a small sportscar manufacturer which was an unbelievable mad idea or wishfull thinking whatever. At the time a lot of people already said, this is not going to go the right way.If Saab were truely great, and had enough customers they would not have been in the problem area to start with.They could have built good maybe even great cars, but when their designs and prices are not what a large audience wants then it is end of business.

author: CJay
author_rank: Super Contributor
timestamp: June 21, 2016, 01:56:22 pm
content: Quote from: Kjelt on June 21, 2016, 01:14:08 pmRegardless Saab would still be a going concern if GM hadn't blocked that sale.Good cars, sadly massive regulation burden and development lead time did for them and a lot of other companies forcing them into the clutches of mega corporations.

author: Gyro
author_rank: Super Contributor
timestamp: June 21, 2016, 04:37:29 pm
content: The basic idea of active noise cancellation is certainly possible though, and can certainly be useful in some situations:http://www.wenzel.com/documents/finesse.html

author: Kjelt
author_rank: Super Contributor
timestamp: June 21, 2016, 05:15:07 pm
content: Quote from: Gyro on June 21, 2016, 04:37:29 pmThat is actually the Walt Jung schematic, using a fast opamp. But what does this has to do with jet radar technology

author: T3sl4co1l
author_rank: Super Contributor
timestamp: June 21, 2016, 05:28:45 pm
content: iFi? More like "Iffy"Tim

author: Gyro
author_rank: Super Contributor
timestamp: June 21, 2016, 05:30:51 pm
content: QuoteNot a damned thingJust an opportunity to stick in a potentially (to someone) useful link.

author: System Error Message
author_rank: Frequent Contributor
timestamp: June 21, 2016, 08:06:15 pm
content: USB 3 related things are widely used because you can get parts all over the place for it and designs quite easily so it becomes cheap to use usb3. Also the standard output for usb3 is 1500mA whereas usb2 would be 500mA, doesnt mean the port cant out more, just something standard to keep to.Other than data it carries power and being widely available, cheap to make. Its also a marketing tool as some people want usb3 on everything and usb because it is used everywhere.In the case of SAAB they had standards, they wouldnt make chinese death traps just to stay in business. Some people just cant sleep at night knowing that within the speed limit your product isnt safe and people can die from it. GM seems to be comfortable with stooping low for profit.

author: Delta
author_rank: Super Contributor
timestamp: June 21, 2016, 08:24:46 pm
content: WTMF is that shit?I thought it was a DAC at first, but it's just a USB hub!The more of this shit I see, the harder and harder it becomes to retain my morals and resist the temptation to set up my own snake-oil operation.

author: CJay
author_rank: Super Contributor
timestamp: June 22, 2016, 06:09:27 am
content: Quote from: Delta on June 21, 2016, 08:24:46 pmI'm with you on that, looking at the prices some of this crap sells for we could hit n run and make a decent enough amount of cash we'd only need to do it once a year or so.

author: timofonic
author_rank: Frequent Contributor
timestamp: June 22, 2016, 11:46:41 am
content: Quote from: CJay on June 22, 2016, 06:09:27 amI imagine an electronics version of Breaking Bad, selling shit to audiophools and other potentially sect-like behavior victim groups (but I don't want to disclose it for different reasons).Of course, it would involve lots of deaths and mafia. Never underestimate the power of technology!

author: dannyf
author_rank: Super Contributor
timestamp: June 22, 2016, 11:54:32 am
content: "because they refused to allow the sale to a Chinese consortium for 'IP' reasons."Why would GM force. Them into bankruptcy? Saab apparently was a great company making great cars (but also losing great amount of money too).Doing you think such a vibrant company would have had enough enterprise value for others wanting to carry it's brand, products and services, even if GM, for some weird reasons, don't want tto sell them to the Chinese, which happens too be GM's bigger Market by volume.Weird, isn't it, for a capitalist company not wanting to maximize shareholder value and left money on the table?

author: wraper
author_rank: Unknown
timestamp: June 22, 2016, 12:00:41 pm
content: Quote from: dannyf on June 22, 2016, 11:54:32 amWhy would they not shoot themselves in the foot in the long term by undercutting their own business? Weird, isn't it?

author: Delta
author_rank: Super Contributor
timestamp: June 22, 2016, 02:04:50 pm
content: Quote from: timofonic on June 22, 2016, 11:46:41 amA plan is starting to form..."The DodgIFI is a completely passive (as we all know that nasty electronics in the signal-path causes inter-phase smearing of the sonic area) USB conditioner designed to remove framing jitter and allow DACs to perform unhindered to provide optimum audio flavouring and presentation."https://www.firefold.com/usb-type-a-female-to-usb-type-b-female-adapterhttps://www.rapidonline.com/hammond-1457k1602e-extruded-enclosure-rfi-flanged-160-x-84-x-44-natural-30-4485http://www.wickes.co.uk/Wickes-Sharp-Sand-Major-Bag/p/220112Now how to retail it? eBay? Amazon? Exclusive audiophool-only online shop? Car boot round the back of a pub?

author: Kjelt
author_rank: Super Contributor
timestamp: June 22, 2016, 02:13:13 pm
content: Indigogo and promise a 800% increase in USB life

author: CJay
author_rank: Super Contributor
timestamp: June 22, 2016, 02:25:54 pm
content: Quote from: wraper on June 22, 2016, 12:00:41 pmIt really is, imagine, if GM had allowed that sale, Saab might not have become a bankrupt company.GM didn't allow it for valid commercial reasons, market protection, anti-competition, IP etc. but, however you spin that fact, it still means GM was the final reason why Saab is no longer a going concern.

author: dannyf
author_rank: Super Contributor
timestamp: June 23, 2016, 10:54:05 am
content: "It really is, imagine, if GM had allowed that sale, Saab might not have become a bankrupt company."So here is this great company, with a great brand, making great cars that it's customers love, losing great amount of money for its owner too the extent it had to get rid of it. And other than some no namme Chinese buyers, no other credible buyers in the whole world would find it attractive too buy this great car company for less than a song.What's wrong with that picture?

author: Gromitt
author_rank: Regular Contributor
timestamp: June 23, 2016, 11:15:36 am
content: Quote from: dannyf on June 23, 2016, 10:54:05 amGM did not sell SAAB Automobile to a Chinese buyer, they sold it to a Dutch sportscar manufacturer called Spyker. Years later Spyker sold SAAB Automobile to a Swedish-Chinese investment company and is now called NEVS./stefan (who worked at SAAB pre GM)