Modulating signal and carrier signal generating circuit

Details Modulating signal and carrier signal generating circuit Modulating signal and carrier signal generating circuit

H - Electricity

03

B

346/32, 331/62

H03B 5/26 (2006.01) B61L 1/18 (2006.01) H03B 5/12 (2006.01) H03C 1/36 (2006.01)

Patent

CA 1100616

(Case No. 6907) MODULATING SIGNAL AND CARRIER SIGNAL GENERATING CIRCUIT ABSTRACT OF THE DISCLOSURE A low frequency modulating signal and a high frequency carrier signal circuit employing a twin-T oscillator having an integrated circuit operational amplifier for producing the modu- lating signal and an L-C resonant feedback oscillator having a transistor amplifier for producing the carrier signal, and a monitoring shunt regulator for supplying a reference potential to the twin-T oscillator and biasing and operating potentials to the L-C resonant feedback oscillator and for deactivating the L-C resonant feedback oscillator when an increase in resistance occurs in the shunt regulator.

307537

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