This circuit turns off when switch S1 is opened. The circuit is from the 1989 Radio Electronics Experimenter edition; The triac must be controlled according to the load.
The buffered phase shift oscillator circuit shown in the figure oscillates at a frequency of 2.9...
This experimental AM microphone was found in an Argentine publication from 1973. The recommended...
This circuit was obtained in an Argentine publication from the 1970s. The circuit can still be...