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.

Receiver for remote control via powergrid (CB9577E)
The transmitter can be that of CB9574E. This receiver uses a PLL to directly trigger a sensitive relay....
Warning circuit (CB21675E)
This circuit can be used in alarms to generate a warning signal. The circuit is from a 1960s...
Fun Projects for the Experimenter - volume 1
Author: Newton C. Braga Published:August 1, 1998 Formato:Book and e-Book Pages:...