AC-DC voltage regulator

Details AC-DC voltage regulator AC-DC voltage regulator

1974-04-10

1976-09-21

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

321 18, 323 20, 323 22T, 317 33VR, G05F 156, G05F 164

Patent

active

039821730

ABSTRACT:
AC-DC voltage regulation is achieved utilizing, among other components, a series pass control element which is serially connected to a detector and filter output stage and between circuit input terminals and an output load. A rectified input voltage is applied to the series pass control element which controls the required amount of current flowing into a load every 1/2 cycle of the input signal. This current is, in turn, detected and filtered to provide the regulated DC output voltage. A voltage sensor is connected to the output of the series pass control element and in parallel with the detector and filter stage; this sensor breaks down at a predetermined level of series pass voltage to, in turn, generate a feedback control voltage. This control voltage is fed back to a current controlled switch which is connected in shunt with the series pass control element. This current controlled switch responds to the feedback voltage to accordingly limit the current conduction in the series pass control element to precisely the amount required by a varying load connected to the circuit output terminal. Thus, voltage regulation is achieved with a maximum AC-DC conversion efficiency and a minimum power dissipation.

REFERENCES:
patent: 3323034 (1967-05-01), Dubin et al.
patent: 3336524 (1967-08-01), Healey
patent: 3437912 (1969-04-01), Morris
patent: 3505583 (1970-04-01), Burkhardt et al.
patent: 3711761 (1973-01-01), Watson
patent: 3790879 (1974-02-01), Milovancevic
patent: 3796919 (1974-03-01), Johnson
patent: 3809999 (1974-05-01), Smith

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