Oscillator circuit whose frequency is voltage controllable which

Details Oscillator circuit whose frequency is voltage controllable which Oscillator circuit whose frequency is voltage controllable which

1975-12-18

1976-12-07

Grimm, Siegfried H.

Oscillators

Relaxation oscillators

331177R, H03K 302

Patent

active

039965317

ABSTRACT:
An oscillator utilizing a voltage comparator having hysteresis characteristics for producing a pulse train. The width of the pulses in the train is controlled by the charging rate of a capacitor coupled to one input of the comparator and the period of the pulse train is controlled by the discharge rate of this capacitor. The discharge rate and hence the oscillator frequency may be varied in response to a control voltage. Compensating elements ensure that the pulse width is highly stable with respect to temperature variations. The oscillator when in a feedback control circuit, produces oscillations at a frequency whose value is linearly related to the feedback control voltage.

REFERENCES:
patent: 3916342 (1975-10-01), Higuchi et al.
Cantoni, "Astable Multivibrator with Independent Mark-and Space-Time Control," Electronics Letters, Apr. 5, 1973, vol. 9, p. 158.

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