Kinescope Rejuvenator (T464E)

This utility circuit for old TV restorers was found in a Popular Electronics from November 1968.

Crowbar for power supplies (CB8482E)
Found in a 90s documentation, this circuit triggers the SCR when there is an overvoltage in order...
Gain Adjustment Instrument Amplifier (CB14413E)
The presented circuit makes use of operational ones that are not common in the market. More modern...
Triggered by Switch Monostable 4001 (CB15507E)
In the figure we have a monostable that is activated with switch S1 and pressed for an instant. The...