Relaxation oscillator with plural constant current sources

Details Relaxation oscillator with plural constant current sources Relaxation oscillator with plural constant current sources

H - Electricity

03

K

379/13, 331/29

H03K 3/26 (2006.01) H04M 19/04 (2006.01)

Patent

CA 1142609

EMBREE-14 - 21 - OSCILLATORY SIGNAL GENERATOR CIRCUIT Abstract 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.

358517

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