Low power oscillator having clamping transistors across its timi

Details Low power oscillator having clamping transistors across its timi Low power oscillator having clamping transistors across its timi

1979-09-14

1982-07-20

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331113R, H03K 3354

Patent

active

043408710

ABSTRACT:
A method and apparatus for producing near constant duty cycle over a wide range operating voltage by connecting clamping transistors across critical timing capacitors so as to eliminate undesirable charge injection in MOS and CMOS oscillator systems. In an oscillator in which two inverters are cross-coupled through timing capacitors, each timing capacitor is shunted by a clamping transistor controlled by the output from one of the inverters. The oscillator may be used in a hand-held calculator.

REFERENCES:
patent: 3708757 (1973-01-01), Savarese et al.
patent: 3955355 (1976-05-01), Luce
patent: 4066982 (1978-01-01), Strohl

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