Video Amplifier (CB21321E)

Found in Popular Electronics from the 90s, this circuit is intended for amplifying analog video signals.

Preamplifier (CB21749E)
This 1969 Popular Electronics circuit was based on the then recently released BC109, today with...
SCR Electric Fence (CB11606E)
This circuit consists of a relaxation oscillator with a neon lamp that triggers an SCR, generating high...
Triac Control Without Hysteresis (CB5275E)
This circuit was found in an American documentation from the 90's. The circuit can use almost any...