This circuit is from an American publication of the 80's. It makes use of components of the time. However, the circuit is the basis for a modern shield application since the input is TTL.
This power control for the AC power line uses a Triac and an Unijunction Transistor. The control...
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...