Bath control (CB21373E)

This hydromassage circuit was found in a 1967 General Electric publication. The SCR is according to the power of the heating element.

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Pulse Generator XR2206 (CB24509E)
We found this circuit in the Radio Electronics magazine of May 1977. The circuit has the frequency...
Micropower Clock (CB6504E)
This 200 kHz oscillator was found on a 90's EDN. It consumes only 2.8 mW and has CMOS compatible...
Signal follower (CB22322E)
This tracker for audio and RF signals was found in old American documentation. Transistors and...