H - Electricity – 02 – M
Patent
H - Electricity
02
M
323/4, 321/83
H02M 7/06 (2006.01) G05F 1/30 (2006.01) G05F 1/62 (2006.01)
Patent
CA 1134436
CLOSED LOOP POTENTIAL REGULATED POWER SUPPLY CIRCUIT ARRANGEMENTS Abstract This closed loop potential regulated acidic power supply comprises a power supply transformer having two sets of secondary windings and a compensating trans- former having exciting windings and two compensating windings. The compensating windings are connected in- dividually in series circuit with the principal power supply secondary windings to which a full wave rectifier circuit and an electric load are connected. The exciting windings of the compensating supply transformer have ac potential applied thereto from the other secondary windings on the power transformer which also supply dc power by means of another full wave rectifier circuit for compensating control circuitry which has an input circuit connected across the load to sense potential variations thereat and an output for varying the ac supply to the exciting windings inversely of variations in load potential. A differential amplifying circuit is used for determining the load potential variation. The error signal produced at the output of the differential amplifier circuit is applied to a transistor effectively to insert a dc component in inverse feedback relationship into the exciting windings of the compensating transformer. As the output potential of the power supply increases, the input potential to the rectifier assembly is decreased, and the converse. The direct current flow path is com- pleted through the load whereby little or no energy is dissipated elsewhere. SA978042
339842
Higuchi Hobart A.
Yee Sammy K.
Gowling Lafleur Henderson Llp
International Business Machines Corporation
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