Found in a General Electric documentation from 1970, this circuit consists of a relaxation oscillator that uses a transistor from that time.
This fixed regulator for currents up to 2 A uses a 741 operational amplifier. The transistor must...
Using a zener diode it is possible to change the linearity of the scale of an analog instrument by...
This high sensitivity circuit was found in the July 1992 Radio Electronics magazine. The circuit...