Constant amplitude variable frequency synchronized linear ramp g

Details Constant amplitude variable frequency synchronized linear ramp g Constant amplitude variable frequency synchronized linear ramp g

1979-10-03

1981-08-18

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307555, 328151, 328181, 307582, H03K 500, H03K 508

Patent

active

042849063

ABSTRACT:
A constant amplitude, variable frequency, synchronized, linear ramp generr is disclosed for generating a sawtooth waveform signal, whose amplitude is independent of frequency. A capacitor is charged by a voltage controlled current source, which is responsive to a feedback control signal provided by an integrator; and subsequently discharged by a clamp, which is responsive to a trigger pulse signal, so as to establish a ramp voltage across the capacitor. The ramp voltage, which appears at the output of the linear ramp generator as the sawtooth waveform signal, in turn allows a television system to operate at various line rates.

REFERENCES:
patent: 3373377 (1968-03-01), Townsend
patent: 3569735 (1971-03-01), Lavender
patent: 3577007 (1971-05-01), Cross
patent: 4002922 (1977-01-01), Spalding
patent: 4225825 (1980-09-01), Watts

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