(09-12-2024, 03:18 PM)hifinet Wrote: It's not a dead short, but a semiconductor voltage drop? It might vary with the type of meter, but with my DMM it beeps with a semiconductor and then shows voltage drop. With dead short, it beeps and then measures a resistance.
The other question I have with your module is that all the ceramic caps are the same size. Did they just use all 100nF caps to lower cost?
The seller has blank PCBs? I would like to get modules without the pins. That would make it easy to stack modules. I want to try 100R I/V resistors and four paralleled modules. I have removed pins and stacked two modules.
The TDA1387 X4 modules are back. The ones with the 1uF electrolytic pin 7 caps and 100nF film decoupling caps.
It looks like the seller is measuring resistance with 10k level. And the value shows 3 multiply by 10K to get 30K(Weird, should the pointer be on the far left if it is OL?)
All of the capacitor seems to be the same dimension, not sure about the capacitance value.
I'm not sure where to measure next, guess I should buy one blank PCB to measure by myself...
