BenQ Q7T3-FP737S User Manual

Q7T3-FP737S Dual function LCD Monitor Service Guide
Circuit Operation Theory
11
Confidential
3.2 PWM Control circuit
TL1451 is a dual PWM controller.C765 and R765 decide the working frequency.BLT_ADJ signal is from control board,
control pulse width then decide how much energy delivery to CCFL also decide CCFL brightness. Q741 and Q742 be
the buffer to rise the drive capability and the totem poles circuit can improve a capable of driving for Q743.C770 decide
the striking time delay.

BenQ Q7T3-FP737S Specifications

General

Brand	BenQ
Model	Q7T3-FP737S
Category	Monitor
Language	English