Inverter Diagram; General Specification - BenQ Q7T4-FP71G Service Manual

Q7T4-FP71G LCD Monitor Service Guide
A-4.) Inverter diagram:
1.Block Diagram:
15Vin
ON/OFF
BRT_ADJ

2. General Specification

Input Voltage: 15V
Input Current: 2A max.
ON/OFF Voltage: 5V
PWM Duty: 5V/50KHz
Output Requirement:
Max. Output Current: 7.5mA
Min. Output Current: 3.3mA
Lamp Working Voltage: 660Vrms
Open Lamp Voltage: 1500Vrms
Frequency: 50KHz
ON/OFF OSCILATOR
switching CIRCUIT
PWM CONTROLLER
TL1451 CIRCUIT
Confidential
Circuit Operation Theory
TRANSFORMER
PROTECTION
AND DETECT
CCFL
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