3-way control (CB7047E)

This is a simple circuit to control a set of lamps from 3 different points. We found it in an old Popular Electronics.

Regulated power supply (CB20555E)
This circuit uses the 7815 regulator to obtain a voltage for motor control num shield for PC. The...
12 V to 110 V x 60 Hz Inverter (CB13913E)
This 12 V to 110 V inverter with 100 W was found in a 1977 Signetics manual. The transformer must...
Timer 555 (CB18645E)
This basic version of the timer with the 555 was found in documentation from the 1980s. The relay...