300v Led Backlight Tester Circuit Diagram. The lcd tv power provides a 12v output for the signal process board a 24v output for the backlight driving circuit and an additional 5v standby power output. This device provides the various voltages we need to test backlight led arrays or single led s.
Adjustable boost converter high voltage boost converter led tv backlight tester mc34063 circuit tv repair tool. Led tester circuit diagram. If you do so you should allow 2 7 v for each additional led.
Posted friday april 26 2013 shares.
The circuit diagram for leds in parallel connection is shown in the following image. This device provides the various voltages we need to test backlight led arrays or single led s. As shown in figure 3 the backlight driving circuit consists of three power converters. The zener diodes are included in the circuit so it can also be used.
