FM Demodulator (CB6196E)

This 80's Exar circuit has a carrier detector for frequencies up to 500 kHz. The circuit uses a company 567 which is still a common component.

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Microphone Operational Amplifier (CB11590E)
In this circuit, D.A. which is actually O. A. of an operational amplifier, which can be any type...
High Q Notch Band Filter CB15474E (CB15474E)
A narrow range of frequencies around 1 kHz is rejected by the high Q filter shown in the figure,...
Planar silicon light sensor (CB8323E)
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