Lockproof low level oscillator using digital components

Details Lockproof low level oscillator using digital components Lockproof low level oscillator using digital components

1990-04-02

1991-01-22

Mis, David

Oscillators

L-c type oscillators

331 65, 331117FE, 331181, 331DIG3, 324236, H03B 508, G08C 1912, G08C 2100

Patent

active

049873890

ABSTRACT:
Three series connected inverters (38, 40, 42) are attached to a tank circuit (18) which includes an inductance (12, 14) and a capacitance (16, 17). Negative (38) biases the inverters at the midpoint between the bistable low and high logic level states. Positive feedback from the second inverter (40) to the tank circuit induces oscillation in the tank circuit. The negative feedback is decoupled at the resonant frequency and the energy delivered to the tank circuit from the positive feedback maintains a low level oscillation in the tank circuit. Negative feedback around the three inverter digital circuit prevents lockup in the event of power loss or momentary short.

REFERENCES:
patent: 3551649 (1970-12-01), Weber
patent: 3742487 (1973-06-01), Tripp
patent: 3745475 (1973-07-01), Turner
patent: 3747083 (1973-07-01), Coia
patent: 4016558 (1977-04-01), Bishop et al.
patent: 4053849 (1977-10-01), Bower et al.
patent: 4136335 (1979-01-01), Tompsett
patent: 4150573 (1979-04-01), Iinuma et al.
patent: 4201911 (1980-05-01), Dering
patent: 4284961 (1981-08-01), Landau
patent: 4349746 (1982-09-01), Grossner et al.
patent: 4389637 (1983-06-01), Rzeszewski
patent: 4503922 (1985-03-01), Brosh et al.
patent: 4583856 (1986-04-01), Moore
patent: 4613829 (1986-09-01), Ott
patent: 4637265 (1987-01-01), Fiori, Jr.
patent: 4644570 (1987-02-01), Brosh et al.
patent: 4663589 (1987-05-01), Fiori, Jr.
patent: 4709224 (1987-11-01), Fiori, Jr.
patent: 4777436 (1988-10-01), Fiori, Jr.
patent: 4804960 (1989-02-01), Fernandes et al.
patent: 4807264 (1989-02-01), Bauer
patent: 4816704 (1989-03-01), Fiori, Jr.
patent: 4833919 (1989-05-01), Saito et al.
patent: 4841245 (1989-06-01), Fiori, Jr.
patent: 4851770 (1989-07-01), Fiori, Jr.
"A 16-Bit A-D-A Conversion System for High-Fidelity Audio Research," IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-23, No. 1, Feb. 1975.

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