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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High Output Voltage Amplifier (CB6179E)
This circuit is from Mullard 1969 documentation. The circuit operates at a relatively high supply...
Darlington Power Switch (CB11323E)
With this circuit we can control a load from 500 mA to 1 A, depending on the transistor, using a low...
Pulse Delay with the 741 (CB1426E )
The purpose of the circuit shown in the figure, obtained from a 1972 documentation, is to delay the...