We found this circuit in a 1964 Electronic Design. The triac and SCR can be replaced with modern equivalents according to the load. The circuit is for 160V network.
Texas Instruments PCM5242 Audio Stereo Differential-Output DAC is a monolithic CMOS integrated...
Emitt This crystal-controlled oscillator can generate signals from 100 kHz to over 30MHz. The...
With this circuit it is possible to fire an SCR from the light that falls on a phototransistor. The circuit...