Found in an Electronic Design from the 90's, this circuit measures the equivalent resistance in series of a resistor. The circuit operates at 50 kHz producing a rectangular signal.
This circuit was found in an American publication from 1968. The transistors are from the time,...
The components of this circuit are exchanged for modern equivalent such as 470 K for the pot and...
This circuits shows how to use in operational amplifier as a basic voltmeter. Power supply must be...