4066 Latching Touch Switch (CB25241E)

This circuit was found in the November 1989 Radio Electronics magazine. Power supply depends on the application.

Transformer Amplifier Stage (CB966E)
This is stage is transformer coupled and was found in na old publication of the year 1958. The...
PWM motor control (CB7999E)
This configuration of PWM control with the LM317 was found in a Popular Electronics from the 90s....
Old Push Pull Low Power Amplifier (CB12923E)
The critical components for this 1970s project are transformers. The original transistors are made...