Debouncer (CB9277E)

This circuit was found in a 1967 American documentation. The switching diode (tunnel) used is an uncommon component today.

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Line Driver (CB6220E)
This circuit is from a 1980s Motorola documentation. The circuit makes use of old components that can in...
Micro FM Transmitter (CB12111E)
This small FM transmitter was found in a Radio Electronics magazine in 1991. The magazine no...
Field strength meter (CB21884E)
Indicated for checking the operation of small FM transmitters, this circuit was found in an...