I'm building an Alpha Dog and just realized I don't have an 18V zener for the switching board. Would a 16V zener give similar results?
I probably have ten 18V zeners (I'd have to double check). Want one (or several)?
Backup supply
Quote from: EBK on August 09, 2020, 12:12:37 AM
I probably have ten 18V zeners (I'd have to double check). Want one (or several)?
Hey Eric, yes, that would be awesome. I think I just need the one.
I believe the the zener is just for over voltage protection, so you can probably just leave it off if you want
Quote from: Aentons on August 09, 2020, 04:02:27 AM
I believe the the zener is just for over voltage protection, so you can probably just leave it off if you want
I was wondering about this. I thought the zener might be used here to raise the voltage to 18V for the circuit, please correct me if I'm wrong.
I checked my supplies. I have fifteen 1N4746A 18V 1W zeners.
Incidentally, I seem to have tons of zeners in values from 3V to 47V, so if anyone else needs/wants a particular zener (within the US), just let me know.
12, 15, or 16v is fine. So long as you aren't powering the Alpha Dog @ 18v then any of those values will work.
Quote from: Bio77 on August 09, 2020, 07:29:15 AM
Quote from: Aentons on August 09, 2020, 04:02:27 AM
I believe the the zener is just for over voltage protection, so you can probably just leave it off if you want
I was wondering about this. I thought the zener might be used here to raise the voltage to 18V for the circuit, please correct me if I'm wrong.
From the switching board build doc:
"A Zener diode is included to prevent over-voltage to both the audio
PCB and the 7662 inverter (when used). Its value depends on which audio circuit is being built."