Guru
Joined: 12/11/2017
Location: United StatesPosts: 556
| Posted: 11:13am 07 Mar 2026 |
I think that 120 ohms 5 watts is there for a 48 volts battery to spread the heat between it and the TIP31/TIP35 used as a linear regulator.
Here is an idea, only for your 24 volts psu with bank resistor testing:
Temporarily jumper with a wire across the 120 ohms 5 watts resistor and re-do your testing.
Edit: You might also need to change r64 from 10k to 1k per mab1's suggestion.
Edited 2026-03-07 21:33 by tinyt