12V double regulator (CB8810E)

We found this circuit in a 1966’s General Electric documentation. The circuit uses diodes in unique GE packages, available at the time.

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4 and a half digits display with ICL7135 (CB15361E)
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MW radio with varicap tunning (CB22172E)
This MW radio circuit with varicap tuning was found in an English documentation from 1989. The...
Fire Alarm (CB13153E)
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