hybridfree/eevblog-posts huggingface dataset:
Data transaction with NXP PN532 NFC reader - Page 1
Forum section: electronics / projects

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: December 13, 2013, 02:40:59 am
content: Hello,Has anybody worked with the PN532 NFC R/W? I' trying to send a command and receive a response at least but the chip does not send back anything. I'm using the UART connection. Everything is OK. Baudrate is 115200, hardware is OK, Voltages are OK, transmission is OK (Checked by DSO) but no responseI have connected the demo board containing the PN532 to the PC through USB to serial FTDI.I send a command like this for example to get the chip firmware version for example: 00 00 FF 02 FE D4 02 2A 00 (all in Hex).

author: Maxlor
author_rank: Frequent Contributor
timestamp: December 13, 2013, 02:52:54 am
content: I have used that chip for a project a while back. I also found setting it up to be slightly frustrating, because at th beginning, it would simply not respond at all. The datasheet is long and not too accessible unfortunately, which means, read it 3 times and pay attention to all the details.The most time consuming issues I encountered, if I remember correctly, where getting the framing right (you need to put the commands you send into checksummed frames... and this is mentioned in a whole different section of the documentation), and getting the timing right (if you poll the chip too often, it'll hang.) Never fully understood what's required for a reliable reset sequence either. At some point I hit a timing that seemed to work for resets and decided to just not touch that part anymoreI was using I2C at the time though, not the serial port. I have some Arduino code somewhere that communicates with the PN532. If you feel that it might be useful to you, I'll see whether i can dig it up.

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: December 13, 2013, 08:49:15 am
content: Quote from: Maxlor on December 13, 2013, 02:52:54 amI don't know really. in my point of view datasheet is frustrating also. The frames are correct. no problemApart from that, is there any other good chip to work with?
Data transfer from scopecorder - Page 1
Forum section: electronics / projects

author: harsh
author_rank: Newbie
timestamp: April 03, 2013, 04:50:08 am
content: I have a yokogawa scopecorder SL1400. maximum sampling rate of this machine in 10MS/s. I want to transfer data online from this machine to my PC. Total duration of my test is 3 hrs. There are several ports available for data transfer, but i dont know which is the fastest.Please help me.!!
Databases on electronic components? Fields? Sample DBs/schemas? - Page 1
Forum section: electronics / projects

author: cdev
author_rank: Super Contributor
timestamp: April 23, 2015, 01:46:45 pm
content: Hi, just to keep track of component data I collect I'm making a database - does anybody else have anything like this? If so are you willing to share your schemata?Another reason I want to start this for myself is to keep track of data I find on devices which I don't have any other data on.I would be willing to share it - or work with others to make a better one...

author: ElektroQuark
author_rank: Unknown
timestamp: April 23, 2015, 01:50:07 pm
content: [Copy-paste/]Well, as always, I recommend a much worked software, ELELA.It has all, and much more, you will ever need for component classification.It's free. In English, german and can be easily translated.Runs on Windows, Linux, web based too...http://www.mmvisual.de/[/copy-paste]
Datalab Transient Recorder DL901 from 1978 schematics or info ? - Page 1
Forum section: electronics / projects

author: oz2cpu
author_rank: Frequent Contributor
timestamp: September 08, 2024, 05:51:21 pm
content: I got a really cool old unit,Datalab Transient Recorder DL901but it looks like the analog sampler is not running,I really need schematics or similarfull detail about it here :https://youtu.be/EH0JGXbsyd8
Datalogger for resistance - Page 1
Forum section: electronics / projects

author: steaky1212
author_rank: Regular Contributor
timestamp: October 12, 2016, 02:55:31 pm
content: Hi,I am working a test whereby I need to monitor the resistance of multiple solenoids over a temperature range. The typical resistance is in the range of 60-120R but I have seen the coil go open and short circuit with temperature.I looked into using a USB datalogger that can measure voltage however I don't think the one I've seen (PicoLogger 1216) would be particularly suitable. It features a 2.5V source but only at 10mA, and the input range is 0-2.5V. I would connect a 60R resistor in series and measure the voltage drop across the coil, but that halves my dynamic range. I could use the 5V supply as the rail voltage but if the coil shorts then I see 5V on the analog input.I was thinking I could build a board that included a constant current source and ADC. This way I set up to source 40mA and I would measure 2.8V across a 70R coil. Can I use an LED driver as a CC source? I guess that this would use some form of PWM to control it, but I could potentially average this out either with a filter or in software.What are everyone's thoughts?Thanks,Steaky

author: Kalvin
author_rank: Super Contributor
timestamp: October 12, 2016, 03:28:44 pm
content: Quote from: steaky1212 on October 12, 2016, 02:55:31 pmConnect a small sense resistor to ground and connect the relay between the 5V and the sense resistor. Use a 1kohm resistor and a zener or few 1N4148's to limit the measurement voltage into the PicoLogger should the realy short to 5V. Choose the sense resistor so that you can get sufficient measurement resolution.

author: 2N3055
author_rank: Super Contributor
timestamp: October 12, 2016, 05:35:53 pm
content: If that coil doesn't have to be connected to the actual circuit you can connect data logging multimeter or LCR meter...I have a UNI-T UT612 LCR meter.. It has usb port and can log data to PC...It's not a top notch instrument, but would be sufficient for this.. Some not very expensive multimeters could be used too..
Datasheet 20AS25HB1 - Page 1
Forum section: electronics / projects

author: bastiaang
author_rank: Contributor
timestamp: August 15, 2019, 09:09:45 pm
content: I am searching for the datasheet and functionality of the20AS25HB1chip. I just can't find

author: ariehorst
author_rank: Newbie
timestamp: June 26, 2021, 03:16:21 pm
content: Perhaps you figured it out by know, but then for everyone else still trying to figure this out: its an STMicroelectronic GAL20V8AS.Datasheet very hard to find. Here there are still some hosted:http://www.datasheet.hk/view_download.php?id=1674322&file=0338%5Cgal20v8as-20hc3j_2238381.pdf
datasheet and user manual of RF1100 232 - Page 1
Forum section: electronics / projects

author: netmonk
author_rank: Contributor
timestamp: September 11, 2022, 10:53:27 am
content: hello,is someone by any luck would share user manual of RF1100 232 radio chip.All i find is in chinese or russian. Would be wonderfull to have english version.Thanks in advance.
Datasheet and/or specs for Reed Relay FRS12549 - Page 1
Forum section: electronics / projects

author: onesystem
author_rank: Regular Contributor
timestamp: June 14, 2024, 06:44:42 pm
content: Not sure if this is the right section of the forum to ask this question on, but I am trying to get datasheet and/or specs for reed relay FRS12549.On Cynergy3 website there is a spec listing for reed relays FRS series 12000, but not specifically 12549, which as I understand is a variation of series 12000. When I reached out to Cynergy3, their front-end tech support requested info from someone else who knows, but that someone else told both of us that the datasheet is not available due to FRS12549 being a military controlled product...So how do I find out? What could be so classified about a reed relay that I may not know about it?
Datasheet clarification (specifically tie LOW on unused pins). - Page 1
Forum section: electronics / projects

author: steaky1212
author_rank: Regular Contributor
timestamp: July 13, 2013, 11:52:05 pm
content: Hi,I'm using an OLED display with the SSD1306 controller.I've been reading through the datasheet ->http://www.adafruit.com/datasheets/SSD1306.pdfand pg15 instructs you to tie certain data pins low if using SPI.Does this mean they should be connected directly to ground, or through a resistor?Thanks,

author: Rerouter
author_rank: Super Contributor
timestamp: July 13, 2013, 11:54:45 pm
content: i would recommend a pull-down resistance, while unlikely some displays have a pin that can function as an output for status, and you would not want that going to a short to ground

author: Mike Warren
author_rank: Unknown
timestamp: July 16, 2013, 02:28:08 am
content: If it's a one-off, use resistor to be safe, but generally, "tie low" means connect to ground. A datasheet should explicitly state if a resistor is required.

author: amyk
author_rank: Super Contributor
timestamp: July 16, 2013, 08:54:13 am
content: In SPI modes those are not used at all and the recommendation to tie low is to prevent them from floating. Directly to ground is fine.

author: KJDS
author_rank: Super Contributor
timestamp: July 16, 2013, 09:25:00 am
content: If you're laying out a prototype board, then put in a standard sized 0R resistor and short it with a thin trace. That way you don't need to fit a resistor but can cut the track if you need to. If there may be a requirement in the future to pull it high, track in a resistor to Vcc too, it needn't be fitted until it's needed.
Datasheet For (I assume) PSI IC Chip - Page 1
Forum section: electronics / projects

author: bostonman
author_rank: Super Contributor
timestamp: January 21, 2023, 02:29:54 pm
content: I have an IC chip, six pins, and the top looks similar to the attached picture.The part number on the bottom reads:6520AP40050W2SN1I've tried searching for 6520 and other variations, but can't find a datasheet. Does anyone know anything about this chip?

author: Andy Watson
author_rank: Super Contributor
timestamp: January 21, 2023, 02:37:45 pm
content: https://www.fujikura.co.jp/eng/products/electronics/sensors/04/ap4_e.pdf

author: bostonman
author_rank: Super Contributor
timestamp: January 21, 2023, 02:42:29 pm
content: Oh wow.... I tried a bunch of variations.I see a slight difference in part numbers though where it shows N and R (pin direction) and the pressure code.

author: bostonman
author_rank: Super Contributor
timestamp: January 22, 2023, 01:59:45 am
content: Is this datasheet correct even thought the part numbers don’t match?

author: Andy Watson
author_rank: Super Contributor
timestamp: January 23, 2023, 01:10:54 pm
content: Sorry, I do not have first hand experience of this chip. I've only dabbled with their analogue cousins from Honeywell.As for part numbers: I imagine that, due to lack of space, they have included only the numbers necessary to identify the version. Hopefully, if you have the part in-hand, you can tell which way the pins bendand the range of pressures appears to be unique too - no need for the units.

author: bostonman
author_rank: Super Contributor
timestamp: January 23, 2023, 01:53:55 pm
content: QuoteMakes sense.I obtained these ICs and not sure when I'll get to tinker with them, but they look cool. From the datasheet, I'm uncertain how to decipher the data to interpret the associated pressure, but hopefully I'll get to tinker with them soon.

author: bostonman
author_rank: Super Contributor
timestamp: January 25, 2023, 05:24:43 am
content: After some research, I learned a bit about I^2C because of how this chip communicates.Not being familiar with I^2C, I thought this chip sends its data and just simply connecting Vcc, GND, and two pull up resistors, would be enough to see some data (either on a logic analyzer or a stream on a scope).What I'm guessing: I need some sort of I^2C driver and software to display the data. The little understanding is that I need to access this chip by its slave address (0x28 to 0x78), a driver will call for data from the chip, and the software will display it (assuming I'm using some sort of USB to view the data in software).Am I totally wrong or am I in the ball park?
datasheet for 4GLM-12232-2-LD 122x32 LCD display - Page 1
Forum section: electronics / projects

author: ledtester
author_rank: Super Contributor
timestamp: January 24, 2016, 05:37:30 am
content: Hi all,I'm looking for a downloadable copy of the 4GLM-12232-2-LD 122x32 LCD display datasheet.It's an ancient part, but I'd like to have it around in case I need it.I found links to it at:-http://www.2shared.com/document/XkJaQMzQ/4GLM_12232-2.html-https://www.scribd.com/doc/6564456/4GLM-12232-5LDE-5Vbut they either don't work or require payment.I could just take screenshots of the scribd link, but having a PDF would be nice.Does anyone have the datasheet or one for a similar working part?Thanks,ER

author: Skimask
author_rank: Super Contributor
timestamp: January 24, 2016, 05:51:13 am
content: One of these might work. Pretty much all the same. Depends on the driver IC.

author: amyk
author_rank: Super Contributor
timestamp: January 24, 2016, 04:26:05 pm
content: I was able to download the first one, just click the Download button... and I've attached that file here.

author: ledtester
author_rank: Super Contributor
timestamp: January 24, 2016, 07:11:48 pm
content: Thanks for the help - much appreciated!
datasheet for a Honeywell 362479-3 servo motor (1960's) - Page 1
Forum section: electronics / projects

author: willm
author_rank: Newbie
timestamp: March 01, 2016, 03:30:52 am
content: I'm trying to find a datasheet for a Honeywell 362479-3 servo motor (115 V, 11.5 W, 105 oz-in torque). It was paired with a Honeywell 356358-3 Servo Amp (Continuous Balance Unit) (Brown Electronik) that I'm also looking for the wiring diagram for. These were part of a mass spectrometer built in the early 1960's that I was lucky enough to salvage parts from. The servo drove a very large Variac that I believe controlled the magnet of the mass spec. I've attached some photos. It would be fun to get this running again, perhaps to adjust a nightlight intensity or the radio volume.So far I've found some for sale, but no datasheet so far on the web.Thanks in advance,Bill
Datasheet for a HQ43 marked parr - Page 1
Forum section: electronics / projects

author: sdancer75
author_rank: Frequent Contributor
timestamp: September 01, 2021, 12:44:58 pm
content: I can not find the datasheet of this HQ43 part (I suppose a buck or probably a boost converter) that it seems it drives the led buttons from a pioneer car radio CD.Some LEDs are already burned, is there any such push buttons with LEDs encapsulated available in the market?

author: amyk
author_rank: Super Contributor
timestamp: September 01, 2021, 11:58:06 pm
content: That's a2SA1036. What makes you think a 3-pin sot-23 would be a buck/boost converter with no sign of any inductors nearby...?

author: sdancer75
author_rank: Frequent Contributor
timestamp: September 03, 2021, 06:07:13 am
content: Quote from: amyk on September 01, 2021, 11:58:06 pmThanks, I found the actual component looking at pioneer_deh-p4300r.pdf service manual schematics page 17.PS: You have right there are no inductors around, it was my 1st thought since it is connected with some LEDs.....
Datasheet for ASMEDIA *ASM1480* - Page 1
Forum section: electronics / projects

author: Dennis_G
author_rank: Newbie
timestamp: January 22, 2025, 04:26:45 pm
content: Hi folks,*almost my first post on the forum, hope I am in the right category*Does anyone have the datasheet for theASMEDIA ASM1480laying around?I had a search and found somebody that worked with it in the past on theforum herebut the dropbox link expiredthat thread is old, slim chances to get a response there.Working to design a board and I am missing some traces.Thank youu,Dennis
Datasheet for Chinese Parts? - Page 1
Forum section: electronics / projects

author: ludzinc
author_rank: Unknown
timestamp: October 02, 2019, 12:31:31 am
content: Hi AllI bought a bluetooth module off off Aliexpress, and it works fine. See attached picture.One quirk is that when it powers up, it announces that it's ready to connect AT FULL VOLUME and that's a tad annoying.I tried to find a datasheet on the bluetooth module to see if there's a way to configure it / control it with an external micro so it's not going full tilt at power on.Looking at the picture attached it shows the chip is a AC1713APOZ235-5AB. Eyeballing the one I have and the chip is a AS17AP15503, both with the same 'JL' (I think) logo on them.So, long story short, any ideas where I can get data on these chips?Thanks All,Simon

author: tautech
author_rank: Super Contributor
timestamp: October 02, 2019, 07:05:03 am
content: Sometimes looking for data for obscure Asian parts trying to buy the same on Aliexpress or Alibaba find suppliers and then generally links to datasheets.Often these parts haven't migrated to the west so often that's your best and only option option.

author: magic
author_rank: Super Contributor
timestamp: October 02, 2019, 08:25:46 am
content: There was a thread a few months ago about making some talking module stop talking, but it may have been a different module with different chips.As for Chinese datasheets, even if you find them, they will likely be in Chinese. That being said, I found Google translator to actually be quite effective at translating datasheets these days, handling even things like "8-bit bus buffer with tri-state outputs"

author: amyk
author_rank: Super Contributor
timestamp: October 02, 2019, 06:56:12 pm
content: I did some digging on the JL logo a few years ago:https://www.eevblog.com/forum/projects/need-help-to-identify-this-chip/Unfortunately half those links are dead and the manufacturer's site itself has moved tohttp://www.zh-jieli.com/No sign of an AC1713 nor AS17AP on their site, however. I suspect it could be a clone of a more well-known brand, you could try tracing the pinouts.
Datasheet for ETG-0603CE505-130  LED - Page 1
Forum section: electronics / projects

author: radeohedca
author_rank: Contributor
timestamp: March 18, 2021, 06:47:22 pm
content: Does anyone happen to have a datasheet for an ETG LED p/n: ETG-0603CE505-130 ?It's a discontinuted part... I can't find anything on the net.Thanks.

author: t1d
author_rank: Super Contributor
timestamp: March 19, 2021, 08:20:53 am
content: Well, just you let you know that people care... I gave it a look, but found nothing, as well. If the manufacturer is still in business, you may have to try to contact them.
Datasheet for HS6621AG - Page 1
Forum section: electronics / projects

author: hatsune_miku
author_rank: Newbie
timestamp: March 29, 2025, 02:14:32 pm
content: i opened a smartwatch and i wanted to program the onboard controller which happens to be a hs6621agthing is its chinese chip so datasheet isnt on the internetif any of you have worked with it beforeplease give me the datasheetthank you

author: ahsrabrifat
author_rank: Regular Contributor
timestamp: March 29, 2025, 03:04:52 pm
content: You can check the following links:https://shop.richardsonrfpd.com/docs/rfpd/HS6621.pdf?srsltid=AfmBOopdO8niS2NacGjw1scYo6pejd-O1noXg9ETVEK1ltDczrefhtkrhttps://icorptechnologies.co.za/product/hs6621https://www.businesswire.com/news/home/20210513005153/en/OnMicro-Launches-Multi-Protocol-Bluetooth-SoCs-Family
Datasheet for IGBT module?  - Page 1
Forum section: electronics / projects

author: iXod
author_rank: Frequent Contributor
timestamp: June 19, 2020, 09:29:54 pm
content: Cant find anything on this: Toshiba A50L-1-0212 . Or any other similar vintage Toshiba units.Anyone have a line on a datasheet?Thanks.
datasheet for SD2403API-G real-time clock chip - Page 1
Forum section: electronics / projects

author: ledtester
author_rank: Super Contributor
timestamp: July 09, 2019, 07:20:47 pm
content: I'm looking for the datasheet for the SD2403API-G real-time clock chip mainly for the SPI protocol.It's part of a "fitness wall clock" that I don't have the remote control for. The uC seems to be interrogating the clock chip via SPI several times a second, so I could possibly sniff out how to read the time, but I'd also like to be able to set it.Would also be interested if anyone has good guess of what the protocol might be... i.e. similar to other RTC devices.

author: ledtester
author_rank: Super Contributor
timestamp: August 05, 2022, 12:18:27 pm
content: Found the datasheet. See attachment.
Datasheet for SM16380SH and SM16380SC (led driver) - Page 1
Forum section: electronics / projects

author: up8051
author_rank: Frequent Contributor
timestamp: August 31, 2024, 05:34:54 pm
content: Hello,Does anyone have access to the datasheet for SM16380SH and SM16380SC chipa.Chips are used in newest version of LED matrix 128x64 pixels available on aliexpress.The manufacturer of these chips (chinaasic.com) unfortunately does not respond to sent e-mails.BR JarekC

author: up8051
author_rank: Frequent Contributor
timestamp: January 08, 2025, 10:41:42 am
content: I am still looking for catalog cards (or application notes) of these chips containing information about the registers and how to access them.There is no such information in the basic catalog card.I am also looking for similar information about FM6363C.BR JarekC
Datasheet for SPX7005? - Page 1
Forum section: electronics / projects

author: ledtester
author_rank: Super Contributor
timestamp: July 04, 2020, 05:06:11 pm
content: Was going through my parts bin and found several chips marked SPX7005 in a 6 pin DIP package.Does anyone have any idea of what it is? Could it be an opto-coupler?Datecode is "8130". Probably bought them 15 years ago. Should have printed out a datasheet back then!Edit: Guess I'm not the only person looking for info on these chips:https://www.dropcontroller.com/forums/topic/optocoupler-substitution/I may have even gotten mine from BG Micro as well!

author: eutectique
author_rank: Frequent Contributor
timestamp: July 04, 2020, 08:20:08 pm
content: Looks like it is 4N35.https://forums.parallax.com/discussion/106450/triac-am-i-doing-this-right
Datasheet for this resistor - Page 1
Forum section: electronics / projects

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: November 20, 2016, 03:10:56 pm
content: Hello All,Does anybody know the brand of this resistor so I can search for its datasheet ?Thanks

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: November 24, 2016, 03:44:42 am
content: The only things I really want to know areRated voltage and power.Thanks.
datasheet for Toshiba T2742 (SIP-9) IC? - Page 1
Forum section: electronics / projects

author: Deactivated-1
author_rank: Frequent Contributor
timestamp: April 25, 2021, 01:15:25 am
content: I can't find any datasheet for the T2742 IC, the package is SIP-9...does someone here happened to have the datasheet for it? or is there some equivalent IC that's under a different model number?
Datasheet for VN224NS - Page 1
Forum section: electronics / projects

author: bostonman
author_rank: Super Contributor
timestamp: May 05, 2021, 02:12:28 am
content: I'm working on my oscilloscope and can't find a datasheet for a chip marked: VN224NS.Does anyone know where to find the datasheet?There is also a less interesting datasheet I'm looking for and couldn't find. I believe it's a relay, but not concerned if I can't find it, it's marked: AG0210A4H

author: bostonman
author_rank: Super Contributor
timestamp: May 06, 2021, 02:16:14 am
content: I took a picture of the component if this helps. I realized the subject has the wrong part number as I accidentally typed VN.

author: bostonman
author_rank: Super Contributor
timestamp: May 06, 2021, 02:20:47 am
content: I think it was my mistake... I noted the part number on a piece of paper as VN224 which explains why I couldn't find the datasheet.Sorry for the confusion, but think I'm set; although I'm finding AQV224NS. I'll look at the differences, but should be set.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: May 06, 2021, 02:51:32 am
content: NAIS is a big name in relays -- in that package, probably a photoMOS. Ahyup, there ya go.Tim

author: bostonman
author_rank: Super Contributor
timestamp: May 06, 2021, 03:13:54 am
content: I found datasheets for AQV224 and it matches my package.I was trying to trace the 50ohm mode path in this oscilloscope, however, I didn't see a 50ohm resistor. My assumption was this "device" had some sort of internal 50ohm load. Looking at the datasheet, and the picture of the component on the PCB, it looks like B type connection, but it doesn't have 50ohms in this condition.
Datasheet - impossible to find - Page 1
Forum section: electronics / projects

author: vladimirmalic
author_rank: Newbie
timestamp: March 31, 2017, 01:54:21 pm
content: Hi guys,As I said in subject, it's impossible datasheet for SAJ141. Can you help me with this topic?Thanks in advance.

author: madires
author_rank: Super Contributor
timestamp: March 31, 2017, 02:18:51 pm
content: Please seehttps://archive.org/details/SiemensMosCircuitsDataBook1976-77page 149

author: vladimirmalic
author_rank: Newbie
timestamp: March 31, 2017, 11:07:05 pm
content: Thank you.
Datasheet needed for a box High Voltage power supply HVA1085 - Page 1
Forum section: electronics / projects

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: February 08, 2015, 05:53:25 pm
content: Hello All,I have tried on Google with no success!This is a 8cmx5cmx3cm box power supply sealed in epoxy.from Advanced High Voltage Corp. Van Nuys, CA.Model : HVA 1085Input : 20/40 VACOutput : +1kVWith the picture below. Any help on the specifications and pinout is welcome.Thanks

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: February 13, 2015, 06:37:09 pm
content: Really ? Nobody can help me for connecting properly this device ?I could experiment by trial and errors, but with 1kV output, errors may be paid in an excessive manner.Thanks for any input !Jacques
Datasheet needed for  STI6608  bi-polar stepper driver IC - Page 1
Forum section: electronics / projects

author: CraigD73
author_rank: Contributor
timestamp: September 26, 2019, 01:40:08 am
content: I am looking for a datasheet for an STI 6608 bi-polar stepper motor driver used for driving very small stepper motors. I think the manufacturer is Kynix Semiconductor but others may make the same part. It's used to driver very small low power steppers used in clocks and panel meter pointers. Normal searches are coming up dry, any help would be appreciated.Craig

author: amyk
author_rank: Super Contributor
timestamp: September 26, 2019, 01:55:24 am
content: A quick search reveals it's the same as the VID6608, and you can find datasheets for that one easily enough:https://datasheet4u.com/datasheet-pdf-file/793843/WellGain/VID66-08/1(Chinese)http://47.110.239.244/UploadFile/down/2009111391710_VID6608%20manual%20060927.pdf(English)This is the product page on the company of the STI6608:http://www.hzsti.com/180416-15616/183044_151560.htmlThe Chinese datasheet for STI6608 indeed looks almost identical to the VID6608's above:https://wenku.baidu.com/view/339dbbacdd3383c4ba4cd207.html

author: CraigD73
author_rank: Contributor
timestamp: September 26, 2019, 09:04:38 am
content: Amyk,Thanks for the info.Craig
Datasheet of an IC - Page 1
Forum section: electronics / projects

author: EEVaditya
author_rank: Regular Contributor
timestamp: August 13, 2015, 07:02:03 am
content: HiI am looking for datasheet of an IC called IC-15607C, its a 22pin IC.It has following pinspin1:RST pin12:GPIO10pin2:ADC pin13:MOSIpin3:EN pin14:SCLKpin4:GPIO16 pin15:GNDpin5:GPIO14 pin16:GPIO15pin6:GPIO12 pin17:GPIO2pin7:GPIO13 pin18:GPIO0pin8: VCC pin19:GPIO4pin9: CISO pin20:GPIO5pin10:MISO pin21:RXD0pin11:GPIO9 pin22:TXD0Is it a communication transceiver or some module?I searched on google intensely but in vein.Kindly help.Its urgent.

author: ataradov
author_rank: Super Contributor
timestamp: August 13, 2015, 07:38:32 am
content: Looks like an MCU with a custom firmware. I doubt you will find it anywhere.

author: mikerj
author_rank: Super Contributor
timestamp: August 13, 2015, 10:09:33 am
content: 22 pin packages are pretty unusual, can't think of any micros with 22 pins. What is the package, e.g. PDIP, SOIC etc?

author: DJohn
author_rank: Regular Contributor
timestamp: August 13, 2015, 02:37:59 pm
content: Possibly an I/O expander. But 22 pins is unusual for them too.A photo of the chip would help a lot - the manufacturer's logo would be a very useful clue. What device is it in?

author: akshaykirti
author_rank: Contributor
timestamp: August 13, 2015, 04:59:16 pm
content: Yeah, a picture would help. It seems to have SPI pins(MOSI/MISO/SCLK).. I'm not sure what CISO is though? It also seems to have GPIO pins and an ADC.. Does look like a custom micro maybe..

author: akshaykirti
author_rank: Contributor
timestamp: August 13, 2015, 05:06:26 pm
content: The only 22pin package i found was a DIP package
Datasheet problem - Page 1
Forum section: electronics / projects

author: Digibin
author_rank: Regular Contributor
timestamp: June 09, 2015, 08:16:25 pm
content: Maybe I'm blind but I can't find any indication as to which pin is pin 1?http://www.mouser.com/ds/2/127/dog-me-8076.pdfI've purchased the display and there is no marking on the device itself.

author: hans
author_rank: Super Contributor
timestamp: June 09, 2015, 08:20:19 pm
content: Page 9,bottom left picture there are pin 1 to 40 markings.

author: Digibin
author_rank: Regular Contributor
timestamp: June 09, 2015, 08:24:33 pm
content: So there are - thanks for that.

author: Dragon88
author_rank: Regular Contributor
timestamp: June 09, 2015, 09:09:20 pm
content: What a strange looking data sheet. I almost expected to find a buy one, get one free coupon somewhere in there.

author: void_error
author_rank: Frequent Contributor
timestamp: June 09, 2015, 10:24:39 pm
content: Quote from: Dragon88 on June 09, 2015, 09:09:20 pmYeah, it looks more like a marketing flyer...
Datasheet requests - Page 1
Forum section: electronics / projects

author: commodork
author_rank: Newbie
timestamp: February 06, 2020, 03:24:47 am
content: I'm looking for datasheets from MStar for an upcoming potential project. The datasheets required are MST8535V-LF and MST3367CMK-LF-170 for pre-qualification. My usual searches for said datasheets have come up blank.
Datasheet Required - Page 1
Forum section: electronics / projects

author: EEVaditya
author_rank: Regular Contributor
timestamp: August 01, 2015, 05:10:38 pm
content: Hello,I am looking for following datasheets:1)Tengen DZ47-632)Transformer BK-300 & BK-4003)Capacitor YZG2-31/JD

author: MagicSmoker
author_rank: Super Contributor
timestamp: August 02, 2015, 12:10:10 pm
content: Quote from: EEVaditya on August 01, 2015, 05:10:38 pmLet Me Google That For You:http://www.chinatengen.com/Product_show.asp?bid=1&sid=1&id=2That's your first item. You can do the rest.
Datasheet Search: NXP PCF7953P IC - Page 1
Forum section: electronics / projects

author: Benta
author_rank: Super Contributor
timestamp: April 14, 2024, 08:57:40 pm
content: Do anyone have access to this?It's most likely under NDA and as such not publicly available, but perhaps a copy is floating around somewhere.I know what it is:A 125 kHz receiver, a MCU,a UHF transmitter plusa 125 kHz passive RFID tag. Additional power management etc. is also there.TBH, I don't need the whole shebang, but just information on whether it's possible to permanently disable/powerdown the 125 kHz receiver and if so, how?Thanks.
Datasheet search  - Page 1
Forum section: electronics / projects

author: EEVaditya
author_rank: Regular Contributor
timestamp: May 06, 2016, 03:37:01 pm
content: Hello ,I'm looking for part Datasheet with marking code AMAPlease find attached image.Kindly guide.

author: amyk
author_rank: Super Contributor
timestamp: May 07, 2016, 01:29:23 am
content: Apparently that part wants you to ask it anything...Just Googling "ZD1106" "ZD1107" "schematic" brings up a bunch of schematics for an LG LCD TV that identifies them as CDS3C30GTH30V. That exact part number doesn't give any results, but lopping off the last few characters and searching for CDS3C30GTH yields some results but seems to be the wrong package. I guess it's some sort of zener/TVS diode.
Datasheet unclear on absolute maximum ratings and active clamp voltage - Page 1
Forum section: electronics / projects

author: jeroen74
author_rank: Frequent Contributor
timestamp: October 07, 2013, 12:52:06 pm
content: At work we use aIPS6044Gwhich is a four channel intelligent protected high side switch. It also offers active clamping to demagnetise inductive loads quickly.Now, I don't understand the following part: the datasheet states that the maximum output voltage is Vcc-35V. (In our application VCC=24V, so that equals to -11V). The specified clamping voltage is between 37 to 42V so during active clamping the voltage at Vout can be as low as 24-42 = -18V. That's 7 volts more then is allowedIn an actual test I measured -15.8V which basically confirms the clamping voltage ~39V.What use is this active clamp circuitry if it consistently violates the absolute maximum rating? Or am I misinterpreting the specification?I asked IRF about it; their answer is that I should use another series as this one is not meant for 24V and they referred toappnote #1117which is not really helpful on this particular issue.I looked at other high side switches like from Infineon and ST and they don't mention an absolute maximum rating at all for the output, just a clamping voltage...

author: Rufus
author_rank: Super Contributor
timestamp: October 07, 2013, 02:47:10 pm
content: Quote from: jeroen74 on October 07, 2013, 12:52:06 pmThe abs min Vout and Voffset ratings are a little confusing but I think they mean the maximum voltage where the clamping mechanism will not turn on. Exceeding that voltage may activate the clamp and you then have current and power dissipation limits.It is common to see specifications for input pin voltage of say VCC + 0.3v and an input pin maximum current of say 10mA while a voltage of greater than VCC + 0.3v would be required to get any pin current.If you are actually using the clamps to absorb inductor stored energy be careful because they don't have much capability. That part has a plot of maximum load inductance against current and it is only 2mH at 3A for example.

author: jeroen74
author_rank: Frequent Contributor
timestamp: October 07, 2013, 07:10:13 pm
content: Yes, I thought something like that tooThe active clamp controls the FET to get a controlled clamp voltage but this is only active when the driver turns off, not during other situations.I really would like to IRF to state this a little more clearly in the datasheet. Let's see what their support department has to say on this, as I emailed them back that I'm still a little confusedThe biggest inductive load we switch only draws a mere 24mA at 24V. That's not even in the graph, but extrapolating from it, the inductance must be a couple of Henries before it becomes a problem.

author: dannyf
author_rank: Super Contributor
timestamp: October 07, 2013, 07:22:31 pm
content: QuoteThat doesn't make a whole lot of sense for the maximum output. Minimum output? Maybe.

author: jeroen74
author_rank: Frequent Contributor
timestamp: October 07, 2013, 07:30:35 pm
content: Oh well.... yes....Maximum output voltage: min= Vcc - 35V, max=Vcc + 0.3V
Datasheet wanted for Allen-Bradley 316A-682 resistor network (FOUND) - Page 1
Forum section: electronics / projects

author: perdrix
author_rank: Frequent Contributor
timestamp: August 01, 2025, 09:45:50 am
content: Hi all,I'm looking for a datasheet for a 316A-682 resistor network - does anyone have this - Google let me down here.ThanksDavid

author: perdrix
author_rank: Frequent Contributor
timestamp: August 01, 2025, 10:54:48 am
content: I found it - under a different name (looked at the top of the part on the PCB, rather than the schematic).For future reference this is a 4116R-2-682 which is still available from Mouser and is being superseded by 4116R-2-682LF (also available at Mouser).David
DATASHEET - Page 1
Forum section: electronics / projects

author: ranganatennakoon
author_rank: Contributor
timestamp: November 19, 2020, 12:25:46 pm
content: Does anyone has an ultrasonic sensors EU1640BCH12T / R datasheet?

author: wraper
author_rank: Unknown
timestamp: November 19, 2020, 12:32:45 pm
content: How about writing actual part number in the title instead of useless "datasheet" most people will simply pass.

author: ranganatennakoon
author_rank: Contributor
timestamp: November 19, 2020, 12:38:37 pm
content: https://www.lxxtech.com/ultrasonic-sensors-waterproof-transceiver-integrated-p195.html<<< this is the part !

author: coromonadalix
author_rank: Super Contributor
timestamp: November 19, 2020, 03:15:54 pm
content: they have an email contact
Datasheet/pinout for AT&T RFG-RB Rubidium reference - Page 1
Forum section: electronics / projects

author: nexus
author_rank: Regular Contributor
timestamp: February 24, 2021, 12:06:03 am
content: Hi All,I was fortunate enough to receive an RFG-RB from a friend. If there is any documentation regarding this frequency reference, specifically with respect to pinouts on the front panel and electrical specifications, I would greatly appreciate it! There doesn't seem to me much technical info out there on the web with regard to this particular box.Thanks,Kevin

author: ZigmundRat
author_rank: Regular Contributor
timestamp: February 24, 2021, 05:25:45 am
content: P1 - the male DB9 on the left, power connection should be pin 1 +24V, pin 2 GND. It will need about 1.5A to start up and maybe .5A once warmed up. That warmup should be maybe 5 minutes before it locks, but it might take longer. AFAIK these were free running and used the paired OCXO unit as a cleanup oscillator. It was only the later models that were GPS disciplined. Hopefully that helps.

author: nexus
author_rank: Regular Contributor
timestamp: March 07, 2021, 09:01:02 pm
content: I see; thanks for that info! I've heard that the reference outputs are quite ugly in terms of both phase noise and THD. I probably would want to pair it with a VCOCXO as a cleanup oscillator like you mentioned. Would be a good learning and design challenge for a newbie like myself to learn about PLLs and other clock management building blocks.I wonder if the RFG-RB box is capable of being fed a discipline signal. The DB9 marked "interface" might be some kind of digital bus that also provides trimming capabilities. I just wish I could find some literature on this thing... it has to be out there!
Datavision DG24128 Monochrome LCD fault - squiggle  - Page 1
Forum section: electronics / projects

author: 0b01010011
author_rank: Regular Contributor
timestamp: January 04, 2017, 10:16:27 am
content: I have been given a few displays by a guy who was clearing out his shed - they are Datavision DG24128 LCD displays - 240x128 pixels, 133x79mm, Monochrome, with a CCFL backlight - based on the Toshiba T6963 controller IC.Two of them seem fine, but one has a weird 'squiggle' on it - visible even when off, so I don't think they are stuck pixels, plus the 'squiggle' doesn't follow pixel boundaries.Does anyone know what this is caused by - just want to know if it's worth tearing down to maybe salvage something from this particular display, or even if it's repairable though I suspect not!The squiggle is approximately 15mm wide by 10mm high. Here are some images of it, first with just a blank display but with the CCFL on, and the others with something on the display.

author: bktemp
author_rank: Super Contributor
timestamp: January 04, 2017, 11:11:40 am
content: It is a mechanical damage: It is caused by applying too much pressure at a small point on the display (probably hitting the display with something sharp).Because of the pressure the crystals in the LCD change orientation permanently. The damage grows over time, because it is affecting surrounding crystals and they also change orientation.There is nothing you can do about it. If you don't care about the damage, the LCD is still fully functional.

author: 0b01010011
author_rank: Regular Contributor
timestamp: January 05, 2017, 09:38:01 pm
content: Thanks bktemp, that would sum up if (in the guys words) they'd been floating around in his shed.I have never seen this kind of pattern on a LCD so it's interesting - most faulty ones I've seen have just partially blackened though I those were all segmented LCDs, not graphical.Now to decide what to do with these displays! They are too big for a lot of applications but too nice not to use.

author: Buriedcode
author_rank: Super Contributor
timestamp: January 06, 2017, 10:22:39 pm
content: I'm in the same boat, lots of 240x128 displays, that probably aren't worth selling, but still should be put to goo use.I say, bolt them all to a big panel, and dedicate each display to a clock, newsfeed, temperature measurement etc.. there are better displays for this application, but it has a sort of retro appeal. Also don't forget, the CCFL's can be a pain to drive, even though CCFL inverters tend to be cheap these days. I replaced several with RGB LED strips so I can have custom backlight colour - the lightpipe is wide enough for PLCC4 RGB's and dos a good job of diffusing the hot-spots.
Datron 1062 EPROM set - Page 1
Forum section: electronics / projects

author: TheDefpom
author_rank: Frequent Contributor
timestamp: January 28, 2021, 09:24:20 pm
content: Hi All,I have been repairing a Datron 1062 and I noticed its EPROM firmware doesn't seem to be online anywhere, so I pulled the chips and dumped the contents, maybe they will help someone one day.This version is a later one as the unit has 27C32 EPROM's on the digital board instead of 2532's, the 27C32's are mounted on special conversion sockets to alter the pinout to suit the board.The ZIP file has the firmware for all the EPROM's and some photos showing them in place, as well as a read me file explaining a bit more.

author: CJay
author_rank: Super Contributor
timestamp: January 28, 2021, 09:37:20 pm
content: Bang them up on KO4BB as well?

author: TheDefpom
author_rank: Frequent Contributor
timestamp: January 28, 2021, 09:44:08 pm
content: I already did, and sent to Tin (xdevs.com) too.
Datum Starloc II GPSDO - Page 1
Forum section: electronics / projects

author: WPXS472
author_rank: Regular Contributor
timestamp: April 23, 2021, 01:22:30 pm
content: I recently bought one of these from the popular auction site which was listed as new, old stock. It did come in a sealed antistatic bag. Takes 24 volts, and has a DC/DC converter on board that puts out 12 and 5 volts. I couldn't find any information about this Martek converter. Once up and running, it didn't seem sensitive to input voltage. I could vary the voltage from about 15 to 30, and the 10 MHz output didn't change in phase compared to a Thunderbolt. The 12 volt output powers the OCXO and nothing else as far as I can tell. The 5 volts powers everything else. It takes about .35 amps at startup and about .22 amps after the OCXO warms up, so almost any 24 volt supply should suffice. But, being a bit obsessive, I was thinking of powering it off a good dual voltage linear supply instead of the DC/DC converter. Is that being a bit too obsessive? Perhaps. I am thinking of making this thing a tinkering unit. I have other GPSDOs to use for the usual things. So, should I scrap the Martek unit and run it off a linear supply?

author: MIS42N
author_rank: Frequent Contributor
timestamp: April 30, 2021, 07:52:33 am
content: There is no guarantee your linear supply produces more stable voltages than the DC-DC converter. If there's no switching artifacts in the output, maybe a case of "if it ain't broke, don't fix it".

author: bob91343
author_rank: Super Contributor
timestamp: April 30, 2021, 11:31:56 pm
content: Your best move is to send me the unit, as I can use it.

author: w9gb
author_rank: Contributor
timestamp: January 13, 2023, 02:37:13 pm
content: IF you purchased the “new in anti-static bag” from an eBay reseller in Canada, these were reviewed in 2016.The reseller acquired these (unknown if seconds, special order or discards).Mark Sims, software developer that maintains Lady Heather application, reviewed it atTime-Nuts. DATUM Starloc II appears to have been company’ attempt (20+ years ago) to respond to Trimble’s original Thunderbolt (Red model).https://time-nuts.febo.narkive.com/v0pxiqAL/datum-starloc-ii-gpsdo-issuesgregw9gb
Dave, check this out [retro] - Page 1
Forum section: electronics / projects

author: Zom-B
author_rank: Regular Contributor
timestamp: November 30, 2017, 07:05:30 pm
content: Calculator with recirculating acoustic memory. And I just remembered you already featured something like this like three years ago.

author: ataradov
author_rank: Super Contributor
timestamp: November 30, 2017, 07:13:37 pm
content: One of YouTubers did a restoration video on one of those calculators with nice poking around that memory. I'll try to remember who it was.

author: Zom-B
author_rank: Regular Contributor
timestamp: November 30, 2017, 07:25:59 pm
content: Keyword: Friden 130 Electronic Calculator / Friden 132 Electronic Calculator

author: ataradov
author_rank: Super Contributor
timestamp: November 30, 2017, 07:27:13 pm
content: Quote from: Zom-B on November 30, 2017, 07:25:59 pmOh, yes, now I remember. Here is the video:

author: CJay
author_rank: Super Contributor
timestamp: November 30, 2017, 07:36:35 pm
content: Oh. My. Word.That's Clifford Stoll, absolute hero!!!Massively entertaining guy and his book, the Cuckoo's Egg is well worth a read, as a bonus it's got some excellent recipes in it IIRC.If anyone can track down the documentary about the Cuckoo's Egg I'd love to know where...

author: TimFox
author_rank: Super Contributor
timestamp: November 30, 2017, 07:41:55 pm
content: I used one of those in graduate school. It featured real RPN entry, showing four levels of the stack on the CRT. The weird part is that it operated in fixed-point mode, where the thumbwheel in the lower right of the keyboard area set the location of the decimal point. Therefore, it could not use scientific (or engineering) notation directly, much like a sliderule.

author: rfeecs
author_rank: Frequent Contributor
timestamp: November 30, 2017, 08:01:32 pm
content: Quote from: CJay on November 30, 2017, 07:36:35 pmThe PBS documentary is called "The KGB, the Computer, and Me":
Dave Jones "See 'n Say" Project! Hilarious Quotes from Dave! - Page 1
Forum section: electronics / projects

author: codex653
author_rank: Newbie
timestamp: July 14, 2014, 05:34:54 pm
content: Hey guys! Found this beauty on youtube just a few minutes ago!! It's one of those animal sounds kiddy devices and Ben Heck modded it to play classic Dave Jones quotes!!Absolutely brilliant in my opinion!Check towards the end of the video to see it in action!

author: lapm
author_rank: Frequent Contributor
timestamp: July 14, 2014, 06:13:50 pm
content: In classic internet responce: OLD....Yeah this was posted in forums shortly after ben did this allready and he even shipped the item to Dave, who also made video out of it...

author: SirNick
author_rank: Frequent Contributor
timestamp: July 14, 2014, 07:40:17 pm
content: Woah! Hey, did you guys know that Dave Jones also has a video blog on YouTube??I keed, I keed.

author: Excavatoree
author_rank: Frequent Contributor
timestamp: July 14, 2014, 08:29:26 pm
content: Does Dave have a web forum? Do crazy meter people post on it?

author: GreyWoolfe
author_rank: Unknown
timestamp: July 14, 2014, 09:33:29 pm
content: Who's Dave Jones?

author: miguelvp
author_rank: Super Contributor
timestamp: July 15, 2014, 12:24:11 am
content: Quote from: GreyWoolfe on July 14, 2014, 09:33:29 pmSome dude that is not allowed to purchase electronic equipment because he is in some kind of list.

author: babysitter
author_rank: Frequent Contributor
timestamp: July 15, 2014, 04:59:16 am
content: None of his tips work in the northern hemisphere due to coriolis force pushing on electrons differently!!1!eleven!