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Circuit Operation Description
4. Function of Board
! Remote Control
Using a 250V/10A relay. The board makes remote control available.
@ Free Voltage
The Board is designed so that the input voltage can be used within 90VAC to 264VAC.
# Improvement of power factor
The SMPS has a power-factor compensation circuit so that the power-factor can be more than 0.9.
$ Protection
The SMPS has circuits which protect the product from over current, over voltage and short-circuit.
5. Part Block Diagram and Part Function.
! AC-DC Converter
The AC/DC Converter converts AC input into DC voltage using a power-factor enhancement circuit.
It is designed to not only enhance the power-factor but also suppress noise. It also becomes the input
for other constant voltage parts.
5-6
Picture 1. PFC Drive FET(2SK2372) Drain pulse
Samsung Electronics
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