Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1981-07-17
1983-07-05
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307520, 328167, 328138, 333172, H03K 524, H03K 526, H03D 1300
Patent
active
043920683
ABSTRACT:
A capacitive commutating filter provides a D. C. output voltage of amplitude responsive to the amplitude of an input waveform having a frequency substantially equal to the operating frequency of the filter. The filter operating frequency is established by a digital signal. The filter input is selectively and cyclically connected through N input resistances, wherein N is an integer greater than zero, to adjacently progressive N ones of (2N+1) nodes, each having one of (2N+1) capacitive filter elements connected to ground potential. The equilibrium voltages across the capacitive filter elements, established during the N/(2N+1) segments of the input waveform during which each capacitor is connected to the input, are coupled to one set each of maximum-positive-polarity and maximum-negative-polarity diodes, for placing the maximum and minimum filter capacitive element voltages at respective ones of the inverting and non-inverting inputs of a differential amplifier, having the output thereof forming the filter output.
REFERENCES:
patent: 2752491 (1956-06-01), Rigoen
patent: 3559081 (1971-01-01), Baudino et al.
patent: 3603898 (1971-09-01), Dawson et al.
patent: 3604947 (1971-09-01), Puthuff
patent: 3761740 (1973-09-01), Naive
patent: 3801918 (1974-04-01), Milne et al.
patent: 4010459 (1977-03-01), Pontoppidan et al.
patent: 4151474 (1979-04-01), Woollvin et al.
patent: 4218665 (1980-08-01), Fujisaki
patent: 4358737 (1982-11-01), Bennett
Davis Jr. James C.
General Electric Company
Heyman John S.
Krauss Geoffrey H.
Snyder Marvin
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