Alternating current inrush limiting circuit

Details Alternating current inrush limiting circuit Alternating current inrush limiting circuit

1996-12-04

1998-11-10

Wong, Peter S.

Electric power conversion systems

Current conversion

With starting arrangement

363 95, 323901, 323908, H02M 114, H02M 542, H02H 7122, H02H 706

Patent

active

058353658

ABSTRACT:
A power supply control circuit is provided for preventing sudden inrush current which is produced when a power switch of an electronic device is turned on. The power supply control circuit includes a main power supply which receives an alternating current (AC) voltage and supplies a first predetermined voltage to a system and outputs a second predetermined voltage independent of an amplitude of the AC voltage, a subsidiary power supply which receives the second predetermined voltage and outputs a power voltage; and a controller which is operated by the power voltage and outputs a switch control signal to control a flow of the first predetermined voltage of the main power supply.

REFERENCES:
patent: 4494064 (1985-01-01), Harkness
patent: 4621313 (1986-11-01), Kiteley
patent: 4628431 (1986-12-01), Kayser
patent: 4910654 (1990-03-01), Forge
patent: 5187653 (1993-02-01), Lorenz
patent: 5257156 (1993-10-01), Kirkpatrick
patent: 5287263 (1994-02-01), Shilo
patent: 5499184 (1996-03-01), Squibb
patent: 5519264 (1996-05-01), Heyden et al.

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