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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Power Amplifier Stage (CB3833E)
This audio stage can be used in siren circuits, sound effects and others to excite a few watts...
SCR Relaxation Oscillator (CB12717E)
This type of oscillator uses an unusual configuration and can be used as a time base, metronome or rhythm...
Isolated zero-crossing switch (CB7420E)
This circuit, which can be used as a shield, was found in General Electric documentation from the...