CR Oscillator having constant current charging source

Details CR Oscillator having constant current charging source CR Oscillator having constant current charging source

1980-11-10

1983-11-08

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331143, 331179, 331DIG3, H03K 303, H03K 3354

Patent

active

044145152

ABSTRACT:
A CR oscillation circuit is provided which includes inverters which are connected in series and whose operating current paths between a power source terminal and a ground terminal are connected in series with a constant current source. In certain embodiments, a resistor is connected between the output terminal of one inverter and the input terminal of the first inverter, and a capacitor is connected between the output terminal of another inverter and the input terminal of the first inverter. The CR oscillation circuit further has a constant current source connected in series with the operating current path of said inverters between the power source terminal and the ground terminal. In other embodiments, the resistor and capacitor are connected in parallel and to the input of an inverter.

REFERENCES:
patent: 3732506 (1973-05-01), Dupuy
patent: 3863179 (1975-01-01), Goo
patent: 3904988 (1975-09-01), Hsiao
patent: 4115748 (1978-09-01), Kubo et al.
patent: 4205279 (1980-05-01), Beutler
patent: 4301427 (1981-11-01), Suzuki et al.

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