Sound intermediate frequency discriminator

Details Sound intermediate frequency discriminator Sound intermediate frequency discriminator

1987-06-25

1988-07-19

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329124, 329142, 455187, 455191, H03D 300

Patent

active

047587946

ABSTRACT:
A discriminator for a plurality of sound intermediate frequencies which are different from each other includes a plurality of selectively operable resonance circuits each of which is formed of a winding of a respective fixed inductance value and a capacitor of a fixed capacitance value, and any deviation of the tuned frequency of a selected resonance circuit is corrected by a variable reactance element which is common to all of the resonance circuits, to thereby remove the necessity of individual adjustments, simplify the circuit configuration, and decrease the cost thereof.

REFERENCES:
patent: 4608539 (1986-08-01), Lawton

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