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- Thu Mar 22, 2018 5:20 pm
- Forum: UWVD (Ultra Wide Viewing Display)
- Topic: Can the LED backlight on a LCD be dimmable?
- Replies: 4
- Views: 864
Yes. A resistor inline with BL+ or BL- will give a fixed intensity; a trim pot will provide manual control; a computer with a PWM port to a transistor switch will provide program control (use a large capacitor and a resistor as a low-pass filter to avoid rapid switching of the LED.) The transistor w...