Current reading does not seem right...

#1 · May 29, 2026, 7:34 pm

Hope I am not wasting anyones time, but it seems the .sim1 file is not running as expected, I have a current meter in line with a resistor and zener and its giving me readings i think are way way too high...

Turn the Vin to say 7V where the zener will start clamping, I would expect around a milliamp off the top of my head... (7-5.6)/5100??

I either getting too old, or the 7+ amps it says.. no clue where that current path is 🙂

Thanks!

Uploaded files:

over-voltage-protection.sim1

#2 · May 29, 2026, 7:49 pm

Hi.

In Simulide 2 you can see the current path:

Anyways thanks for reporting a possible problem.

#3 · May 29, 2026, 9:41 pm

Thanks I upgrade to V2! very nice, fixed everything with a resistor on the base... so figure! 🙂