Automatic TV power off (CB5945E)

This 80's circuit turns off a TV or other appliance after a set time. The base is a 555 IC and the relay is according the supply.

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Light Receiver and Effect Generator (CB21006E)
Found in American documentation from the 90s, this circuit serves as a laser receiver and also as a...
Transistor Monostable (CB19361E)
Equivalent transistors, such as the BC548, can be used in this circuit that we find in...
High Voltage Regulator (CB15827E)
The circuit in the figure is suggested by Texas Instruments and can provide a current of up to 500...