Solid state relay (CB8518E)

This circuit was found in a 90s Popular Electronics. Both the coupler and the MOSFET can be of any type.

Incandescent Lamp Flasher (CB1393E)
This circuit, for a bulb of 6 V up to 200 mA, was found in an old Argentine publication of the...
1 W Amplifier with the TAA300 (CB6164E)
Found in a 1968 documentation, this small amplifier was very popular at the time being used in...
Complementary Transistor Amplifier (CB908E)
This circuit can drive a loudspeaker with near 1 W of Power from 6 to 9 V supplies. The circuit...