This normally open, two-terminal, high-sensitivity circuit was found in General Electric's technical documentation from the 1980s. The circuit is half-wave.
Using a MAX644 this circuit was found in the April 1989 issue of Radio Electronics magazine. The...
This oscillator produces a modulated signal using a unijunction transistor. We found it in an...
Powered from 20 V dual power supply this circuit sources 20 W to a 4 ohm loudspeaker. The IC is...