Multifrequency oscillator circuit

Details Multifrequency oscillator circuit Multifrequency oscillator circuit

1987-11-24

1989-02-21

LaRoche, Eugene R.

Oscillators

Solid state active element oscillator

Transistors

331177R, H03K 326

Patent

active

048068837

ABSTRACT:
Oscillation circuit that generates an oscillating signal by charging and discharging a capacitor between two reference voltages employs several constant current sources, with the number of constant current sources that are connected to the capacitor at any one time being controlled so that the oscillation frequency can be changed in a step-wise fashion, whereby the circuitry is relatively simplified compared with known step-wise changing oscillators.

REFERENCES:
patent: 3895315 (1975-07-01), Way
patent: 4551691 (1985-11-01), Ogawa

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