Today, after a few glitches during a build, I realized I‘d better be cautious and measure all resistors already on board (I messed up more than once, how many more are there?)
Off I went, comparing schematic and board, and double checked every single resistor.
Oddly, some results are spot-on or within 1%, but some others are off, like, 30% below the value. I don’t get it, is that normal?
All resistors were confirmed before populating the board with my DMM…
Off I went, comparing schematic and board, and double checked every single resistor.
Oddly, some results are spot-on or within 1%, but some others are off, like, 30% below the value. I don’t get it, is that normal?
All resistors were confirmed before populating the board with my DMM…
If you look at the schematic, some resistors will have other components (resistors, semis, etc.)
effectively in parallel with them. This will change the DVM reading, normally making it lower.
Only if one lead of the resistor is unconnected to anything else (other than the pcb foil) will the
reading across it definitely be correct.
effectively in parallel with them. This will change the DVM reading, normally making it lower.
Only if one lead of the resistor is unconnected to anything else (other than the pcb foil) will the
reading across it definitely be correct.
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