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.

Transformer Amplifier Stage (CB966E)
This is stage is transformer coupled and was found in na old publication of the year 1958. The...
Stereo preamplifier (CB20654E)
We found this circuit in a Hands-on Electronics from 1985. The circuit is based on common...
SCR LED Flasher (CB13717E)
This interesting experimental and didactic configuration was found in a 1977 Radio Shack...