We found this circuit in a 1985 technical publication. The circuit uses PUTs to drive lamps. Relays or LEDs can be used with the voltage according to the supply.
This circuit of a 73 American magazine from the 1990s can generate multiple frequency signals from the...
This circuit turns a relay on or off by touching the sensors or by connecting sensors at these...
Featuring low output impedance and high input impedance, this configuration was found in a 1980s...