One coil FM tuner (CB9698E)

This circuit with only one tuned coil was found in a 1980s American documentation. The circuit uses components from that time.

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Car 9 V adapter (CB8956E)
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5 W Darlington Amplifier (CB6177E)
We found this circuit in a 1969 General Electric documentation. The circuit uses transistors of the...
CMOS Voltage Doubler (CB15715E)
This voltage doubler is indicated for applications where a voltage equal to twice that applied at the...