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Thanks, that makes sense. I guess I can figure out the op amp connections from the printed circuit.
More dumb questions:
Does the "sens" in the diagram refer to the rotary switches?
What does "PC" mean?
There are two wires that go to electrodes held by the "patient". Any idea where those...
Actually, I'm building the fancy one with the metal box. I found a supplier for the needle meter.
I get that the "C" on the schematic is for capacitor, and the "R" is resistor, but what's the "TR" mean?
Also, the resistors I'm finding for the values shown are all rated at a 1/4 watt. Will that...
E-meter
I'm a clueless newbie interested in building the "e-meter" shown in this link:
https://www.cs.cmu.edu/~dst/Secrets/E-Meter/Ralph_Hilton/Mk4.htm
Anybody here ever made one of these? I understand the schematic and the values for the resistors and capacitors, but some of the other stuff...
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