| 摘要 |
A backlight control circuit ( 200 ) includes an electrical source ( 240 ), a signal input terminal ( 210 ), a pulse width modulation integrated circuit (PWM IC) ( 220 ) having an enable pin ( 221 ), and a transistor ( 231 ). The transistor includes a drain electrode, a source electrode, and a gate electrode. The drain electrode of the transistor is connected to the signal input terminal. The source electrode of the transistor is connected to the enable pin of the PWM IC. The gate electrode of the transistor is connected to the electrical source via a first resistor ( 232 ) and connected to ground via a second resistor ( 233 ). The configuration of the backlight control circuit is simple.
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