Video Modulator (CB21088E)

Found in older American documentation, this circuit is intended for use with analog TV. The active component used is from the period.

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Audio Generator (CB24641E)
This sophisticated audio generator based on the XR2206 IC was featured in the May 1980 issue of...
Frequency Divider (CB24670E)
This TTL circuit consists of a frequency divider or converter that has values selected by a...
Relaxation Oscillator (CB4603E)
The indicated circuit generates frequencies in a range from approximately 500 Hz to over 5 kHz...