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.

Line Driver (CB5182E)
This twisted pair exciter circuit uses 80's components. The circuit is from a documentation of the time, but...
Linear switch using FET (CB6919E)
Found in a 1967 Electronics World, this circuit can use any modern equivalent FET. Observe the...
Warning notice (CB7977E)
What this interesting circuit does is to warn that a note written on a paper has been removed and...