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.

100 MHz ECL Oscillator (CB7480E)
ECL logic circuits can operate at very high frequencies. This circuit was obtained from a 1977...
Fluid Level Controller (CB5309E)
This circuit, which can be used as a shield, was found in a 1980s documentation. The circuit can be...
7555 Monostable with Electronic Triggering (CB25127E)
This circuit is like the previous one except that it can be triggered electronically. The circuit is...