Sawtooth wave form circuit

Details Sawtooth wave form circuit Sawtooth wave form circuit

1975-05-30

1977-02-22

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307261, 307263, 328 35, 328181, 328183, H03K 408, H03K 448

Patent

active

040093980

ABSTRACT:
A sawtooth wave forming circuit has an input signal alternately applied to the bases of first and a second transistors forming a differential amplifier, and a circuit which permits flow of a current equal to or proportional to the current flowing in the collector of the first transistor is connected between the differential amplifier and a power source. A capacitor is provided between ground and the junction between the circuit and differential amplifier. With this arrangement, the charge-discharge cycle of the capacitor is controlled by means of the input signal.
By making use of the sawtooth wave forming circuit constituted in this way, stable trapezoidal or triangular waves having only small fluctuations in the slopes of the sides of the wave can be formed.

REFERENCES:
patent: 3198963 (1965-08-01), Halsted
patent: 3440448 (1969-04-01), Dudley
patent: 3735151 (1973-05-01), Frederiksen et al.

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