Regulating digital power supply

Details Regulating digital power supply Regulating digital power supply

1975-06-19

1976-07-20

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

323 39, G05F 110

Patent

active

039709191

ABSTRACT:
A regulating digital power supply in which an error detector compares a reference signal voltage with an unknown loop signal voltage and upon being strobed the error detector outputs a signal depending upon the relative magnitude of the two input signals. This output signal controls the direction of count of an up/down counter that counts clock pulses. At appropriate intervals as controlled by the clock, the contents of the up/down counter are transferred to a down counter upon a command signal which also sets a flip-flop. When the down counter reaches zero and overflows it emits a signal that resets the flip-flop, the output thereof being a pulsewidth modulated regulated power supply. The flip-flop also controls a switch to a power source that is rectified and filtered and then fed back to the error detector comparator, thereby completing the loop.

REFERENCES:
patent: 3691452 (1972-09-01), Aguiar
patent: 3735241 (1973-05-01), O'Sullivan
patent: 3818321 (1974-06-01), Willner et al.
"A-D Transistor Switching Regulator Controller" by Calvo et al. IBM Tech. Disc. Bull. vol. 17, No. 9 Feb. 1975 pp. 2666, 2667.

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