Monochrome TV Pattern generator (CB9421E)

Using an integrated circuit from the time, this circuit was found in Radio Electronics from the 90s. The ZNA234E is an unusual component today.

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LM12 Amplifier (CB25205E)
We found this good power amplifier with the LM12 integrated circuit in the March 1989 issue of...
Voltage Follower 741 (CB16811E)
This is the traditional voltage follower configuration with the 741 operational amplifier. The...
Schmitt Trigger (CB16077E)
An irregular signal can be converted into a pulse of duration determined by the switching...