Re: Prog Rock board voltages


KI7MWA
 

Measuring R1 and R2, in the board, I'm getting 0.968kOhms and 2.82KOhms, which, should be giving me 1.25V(1+(2.82/0.968)) = 4.89V.  But I'm not good enough at reading schematics to conclude whether or not my measurements are being affected by some other part of the circuit (e.g. the LM317LZ).

I'm inclined to try adding some parallel resistance to R2, just to see if I'm understanding the voltage regulator part of the circuit.

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