Hi,
I'd like to build this project but I don't seem to get the thing about the four wire connection to the DUT:
Why use four wires to connect a capacitor that has only two wires? Why not connect pin1 and pin2 of CN1 directly? I've seen other esr meters that use very short wires to connect to the DUT, is this something about wire capacities or something of this kind?
Also, in the original schematic by Le Hung there is an additional BS170 mosfet in the circuit, could anybody clear up what that is about?
I know how a esr-meter works in principle, but this really puzzles me.
Cheers,
Ali