This simple circuit is intended to test the zener test. RV1 can be calibrated in terms of voltage. The maximum voltage of the tested zener is that used in the circuit supply.
This circuit featuring a new quadruple operational amplifier was found in the March 1980 issue of...
This interesting circuit records a few seconds of audio signals, reproducing them in a small...
This circuit uses a thermistor or NTC as a temperature sensor and provides the indication on an...