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.

Power Control (CB24808E)
This circuit, to control air conditioning systems, was found in July 1984 Radio Electronics...
Up to 10 hours timer (CB20360E)
Using bipolar, FETs and unijunction this long-lasting timer can reach 10 hours with good quality...
Wien Bridge Oscillator CA3140 (CB4923E)
We found this circuit in an old American documentation (80's). The circuit generates sine signals...