Low Frequency Doubler MC1556G (CB14564E)

This circuit is from Motorola's 1990 Linear Databook. The circuit employs a component that is no longer common today.

20 kb/s Fiber Optic Receiver (CB13534E)
This fiber optic receiver was obtained from a 1978 documentation. We can use any modern...
Digital mixer (CB8757E)
Found in a 90s Electronic Design, this circuit employs CMOS functions to mix signals from two...
Dual Power Supply 5 + 5 V x 1 A (CB12187E)
This symmetrical source was obtained from Popular Electronics from February 1979. Transistor Q1...