RELAXATION OSCILLATOR WITH PLURAL CONSTANT CURRENT SOURCES

摘要

EMBREE-14 OSCILLATORY SIGNAL GENERATOR CIRCUIT In an oscillatory signal generator circuit exceptional frequency stability is insured by the use of interrelated constant current sources that provide an insensitivity to supply voltage variations over a wide range. Two of the current sources determine the duty cycle by controlling the charge and discharge current of a capacitor in the circuit. A third current source determines the voltage swing on the capacitor. By varying the current output from the third current source, the generator circuit provides a variable frequency signal.