Kinescope Rejuvenator (T464E)

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

Experimental VHT Generator (CB16471E)
We found this different configuration that uses a fluorescent lamp as a negative resistance device...
Thermometer LM10 and LM134 (CB17591E)
The integrated circuits used in this thermometer are not very common today. The indicator is a...
Low Voltage Triac Control (CB12240E)
In the figure we have the way to control a triac of the TIC series with a low voltage through a...