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.

Gated Oscillator (II) (CB105)
The gated oscillator in the figure bellow tums on when a “0" Iogic Ievel is applied to its input....
20W Transistor Amplifie (CB1368E )
In this project, from a Japanese magazine of 1973, only one channel of a stereo amplifier of 20 W...
Low Noise Instrumentation Amplifier (CB4910E)
We find this circuit in the manual of the used integrated circuits. The manual is from Linear...