Variable frequency oscillating circuit

Details Variable frequency oscillating circuit Variable frequency oscillating circuit

H - Electricity

03

B

331/62

H03B 5/12 (2006.01) H03B 5/36 (2006.01)

Patent

CA 1215437

ABSTRACT OF THE DISCLOSURE A variable frequency oscillating circuit of the general Colpitts kind in which the frequency of oscillation varies in accordance with the current in a constant current source and oscillation stability is high because the oscillator is of the general LC form. Resonance is provided by a solid-state resonator driving a transistor forming the Colpitts oscillator and which is connected to ground through a constant current source having a controllable current to set the frequency of oscillation. The response characteristic can be linearized using a compensating circut employing additional constant current sources and current mirror circuits.

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