Service Manuals, User Guides, Schematic Diagrams or docs for : . Various CCFL CIRCUITS CCFL Circuits NCP1200D60 OZ960GN PW1504FG(A) - LG L1710S LB700G - IPBOARD
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LIPS Board Block Diagram
12V
50 ~ 60Hz
HVDC 100KHz 5V
EMI INPUT RECTIFIER ENERGY OUTPUT RECTIFIER
COMPONENTS AND FILTER TRANSFER AND FILTER
LINE GND
100 ~ 240V
PWM SIGNAL
PHOTO-
CONTROL COLLENTI
COUPLER
CIRCUIT ON
ISOLATION
PRIMARY SECONDARY
12V
INVERTER CIRCUIT High Voltage output
Operation description_LIPS
1. EMI components.
This part contains of EMI components to comply with global marketing EMI standards like FCC, VCCI CISPR, the
circuit included a line-filter, across line capacitor and of course the primary protection fuse.
2. Input rectifier and filter.
This part function is for transfer the input AC voltage to a DC voltage through a bridge rectifier and a bulk capacitor.
3. Energy Transfer.
This part function is transfer the primary energy to secondary through a power transformer.
4. Output rectifier and filter.
This part function is to make a pulse width modulation control and to provide the driver signal to power switch, to
adjust the duty cycle during different AC input and output loading condition to achive the dc output stablize, and also
the over power protection is also monitor by this part.
5. Photo-Coupler isolation.
This part function is to feed back the dc output changing status through a photo transistor to primary controller to
achieve the stabilized dc output voltage.
6. Signal collection.
This part function is to collect the any change from the dc output and feed back to the primary through photo
transistor.
7. Inverter
The inverter converts from DC12V to AC 700V and operate back-light lamp of module.
To apply the AU Module.
3. ADAPTER BOARD (Component Side)
4. ADAPTER BOARD (Solder Side)
To apply the HYDIS Module.
5. ADAPTER BOARD (Component Side)
6. ADAPTER BOARD (Solder Side)
5. ADAPTER (AU Module)
6. INVERTER (AU Module)
7. ADAPTER (HYDIS Module)
8. INVERTER (HYDIS Module)
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