Generator for producing a sawtooth and a parabolic signal

Details Generator for producing a sawtooth and a parabolic signal Generator for producing a sawtooth and a parabolic signal

1976-07-26

1977-12-20

Wilbur, Maynard R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

315371, 315399, 328187, H03K 408, H03K 484

Patent

active

040644065

ABSTRACT:
A generator suitable for producing a sawtooth and a parabolic signal for the line or field deflection in a television system. The generator is provided with two dc coupled, series-connected difference amplifiers with feedback, which are each part of an associated integrating circuit. Via a peak detection circuit the output of the second difference amplifier is connected to the non-inverting input of the first difference amplifier. The second integrating circuit has been rated in such a way that the peak-peak value of the parabolic signal is half that of the sawtooth signal, while independent of the peak-peak value adjustment the ground potential is present in both signals in the center of trace; consequently there are no centering difficulties.

REFERENCES:
patent: 3715487 (1973-02-01), Blake
patent: 3725726 (1973-04-01), West
patent: 3986127 (1976-10-01), Ray

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