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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Beep For Flasher (CB4340E)
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Depending on the value of C1, this oscillator can produce signals of up to 1 MHz. For a capacitor of 10...
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