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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

3 banks of 5 Leds in series and an mains power supply, does this require resistor?

I thought I read that somewhere. Anyway, if it's working at 3V I wouldn't mess with it either. If it ain't broke...don't fix it.
 

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