Kinescope Rejuvenator (T464E)

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

Bandpass Filter - 741 (CB12589E)
A frequency range determined by the network of resistors and capacitors with negative feedback and input...
Low Pass Filter LM102 (CB15476E)
In the figure we have a low-pass filter, with a cutoff frequency of 10 kHz, also suggested by...
Parallel Output LM339 (CB19792E)
In the figure we have the way to use the comparator LM339 and others of the same series with the...