Timeline for Want to know blown out diode value of USB device
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
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| Aug 25, 2023 at 6:31 | comment | added | winny | Given 5 V input, it doesn’t make any sense to have a 171 V TVS there as it would clamp way too late. User rdtsc posted an answer here if you scroll down. You can sort out several of the potential candidates he posted. | |
| Aug 24, 2023 at 21:42 | comment | added | Ben | @winny I don't understand what you said. Should I use zener Or tvs? How would I choose which one from rdtsc list for 5v usb ? | |
| Aug 24, 2023 at 17:37 | comment | added | winny | Then you can sort out the 51+ V Zeners and TVSs in rdtsc’s answer below. | |
| Aug 24, 2023 at 16:56 | comment | added | Ben | @winny it take 5v voltage from pc/laptop usb. | |
| Aug 24, 2023 at 12:31 | comment | added | winny | Good. What's the input voltage to the device? | |
| Aug 24, 2023 at 11:55 | history | edited | Ben | CC BY-SA 4.0 |
added 30 characters in body
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| Aug 24, 2023 at 11:52 | comment | added | Ben | @winny I have removed the diode and it works fine. Which diode should o replace with and value | |
| Aug 24, 2023 at 11:51 | comment | added | Ben | @Julien I have edited the question and explained the cause. | |
| Aug 24, 2023 at 11:51 | history | edited | Ben | CC BY-SA 4.0 |
Reason for diode blown out and update
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| Aug 23, 2023 at 21:15 | comment | added | winny | Given the massive planes it’s connected to and proximity of what I suspect is input barrel connector, TVS or Zener diode. Best case it sacrificed its own life and tripped whatever was feeding it. If it was mine and it’s out of warranty, I would remove it, hook up to lab supply with low current setting and ramp up the voltage. Ideally monitor with thermal camera to check for offenders/other damaged devices downstream. | |
| Aug 23, 2023 at 20:27 | answer | added | rdtsc | timeline score: 0 | |
| Aug 23, 2023 at 20:20 | comment | added | Julien | Can you provide more info on how/when it failed and can you measure the voltage of both pin of the diode while powered via USB and/or other power source if there are? | |
| Aug 23, 2023 at 20:18 | answer | added | Julien | timeline score: 3 | |
| Aug 23, 2023 at 20:14 | history | edited | JYelton | CC BY-SA 4.0 |
Capitalization; removed unnecessary thanks (show thanks by voting on and accepting answers)
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| S Aug 23, 2023 at 19:38 | review | First questions | |||
| Aug 23, 2023 at 20:32 | |||||
| S Aug 23, 2023 at 19:38 | history | asked | Ben | CC BY-SA 4.0 |