Adjustable voltage power supply

Details Adjustable voltage power supply Adjustable voltage power supply

1974-09-03

1976-02-10

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

307 71, 323 49, G05F 140, G05F 166, G05F 308

Patent

active

039380319

ABSTRACT:
An adjustable voltage alternating current power supply is provided which is especially suitable for supplying loads of variable resistance. The power supply consists of a transformer having two secondary windings with solid-state switches for alternatively connecting the secondary windings in either parallel or series, and with a firing control circuit for changing the connection of the windings from parallel to series at a predetermined point in each half-cycle of the voltage to adjust the effective output voltage so that constant output power can be maintained, or the output power can be varied in any desired manner.

REFERENCES:
patent: 3181039 (1965-04-01), Binder et al.
patent: 3195038 (1965-07-01), Fry
patent: 3600668 (1971-08-01), Goldberg
patent: 3711747 (1973-01-01), Sahara et al.
patent: 3800197 (1974-03-01), Mehta
patent: 3803465 (1974-04-01), Akamatsu

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