Precision oscillator circuit

Details Precision oscillator circuit Precision oscillator circuit

1996-01-29

1997-06-10

Pascal, Robert

Oscillators

Solid state active element oscillator

Transistors

H03B 520

Patent

active

056380313

ABSTRACT:
A precision oscillator constructed from a reference current generator, a charge control stage, a capacitor, a comparator, and a voltage threshold generator is disclosed. The reference current generator generates a reference current which is used by the charge control stage to either charge or discharge the capacitor. The comparator compares the voltage on the capacitor to one of two voltages from the voltage threshold generator. The frequency of oscillation is controlled by an external resistor and an external capacitor. Alternatively, the frequency of oscillation can be controlled by adding or subtracting parallel transistors in a current mirror in the reference current generator.

REFERENCES:
patent: 4365212 (1982-12-01), Gentile et al.

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