5V Powwr Supply Crowbar protection MC3425 (CB14530E)

This circuit is suggested by Motorola in its 1990 Linear Databook. The integrated circuit is no longer common in the market.

Amplifier with polarity inversion (CB6785E)
Suggested by Siliconix in documentation from the 90's, this circuit supports current equivalent...
1800 Hz Decoder (CB20352E)
This circuit decodes a 1800 Hz tone used in communications. The circuit is from an American...
Mini FM Station (CB16404E)
This circuit was obtained in 1981 documentation. It is an FM transmitter that can serve to emit...