Does a LED backlight need a resistor?

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Megacircuits
Posts: 18
Joined: Wed Sep 12, 2018 6:17 pm

Does a LED backlight need a resistor?

Post by Megacircuits » Mon Oct 29, 2018 8:32 pm

Can I turn on a LED backlight without a resistor?

LCD_Designs
Posts: 262
Joined: Thu Feb 22, 2018 9:49 pm

Re: Does a LED backlight need a resistor?

Post by LCD_Designs » Tue Oct 30, 2018 8:36 pm

Yes, there needs to be a resistor in series with the positive side of the power supply. The smaller the resistor, the brighter the backlight. The brighter the backlight, the shorter it's half-life. What in the world is half-life? click here. https://focuslcds.com/journals/the-half ... acklights/

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