7.2 Power Board
AC input |
|
|
|
| Bridge |
| |
| EMI filter |
|
| Rectifier |
| ||
|
|
| and Filter |
| |||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
|
| Start Circuit: R904, R905,R906 | |||||
|
| ||||||
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
| PWM Control |
|
| ||
|
|
| IC LD7576 |
|
| ||
|
|
|
|
|
|
|
|
Transformer
Rectifier diodes
Feedback Circuit
CN902
5V
16V
ON/OFF
Lamp
Output
Circuit
Feedback Circuit
Transformer
Over Voltage
MOSFET
PWM Control
ON/OFF Control
DIM
34
