Power factor boost converter power supply

Electricity: power supply or regulation systems – For reactive power control – Using converter

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Details

323210, 323222, 323285, G05F 170

Patent

active

053492846

ABSTRACT:
A boost-type power factor correction circuit is disclosed in which output voltage of the convertor is proportional to the peak input voltage. To achieve this, the circuit includes a peak rectifier D2, C2 which senses peak input voltage and provides a reference to which the output voltage derived through resistors R3, R4 is compared to give an error signal dependent upon variation from the peak input voltage derived reference. The error signal is used to control a MOSFET switch 120 to provide an output voltage V.sub.out dependent upon the reference.

REFERENCES:
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Technical Data Sheet for the "ASTEC AS3842/3/4/5 Current Mode PWM Controller," ASTEC Semiconductor, Apr. 1990.
Technical Data Sheet for the "UNITRODE UC1854/2854/3854 High Power Factor Preregulator," UNITRODE Integrated Circuits Corporation.

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