# Powering LEDs

Hi ! Normally how much current (mA) do I need for 1 LED to turn on ? If I give 1 A to 14 leds , will they burn ?

Arman5592:
Hi ! Normally how much current (mA) do I need for 1 LED to turn on ? If I give 1 A to 14 leds , will they burn ?

This all depends on the LED's your talking about. You really need to read the datasheet for the LED's to figure it out.

Normally how much current (mA) do I need for 1 LED to turn on ? If I give 1 A to 14 leds , will they burn ?

A typical 5mm LED takes anywhere from 10mA to 20mA dependent offcourse on the color too! and also how much current limiting you do with limiting resistor, ascertain this from your datasheet whether the led's are that High power! to take 1A even if 14 are lit!

Arman5592:
Hi ! Normally how much current (mA) do I need for 1 LED to turn on ? If I give 1 A to 14 leds , will they burn ?

How long is a piece of string?

Answer: If you're using 10A LEDs then they'll be very dim...

If you don't limit the current, they can consume everything you throw at them until it burns out, melts whatever...

There are a few ways to limit the current, the easiest is a series resistor... obviously that depends on the led in question

Arman5592:
Hi ! Normally how much current (mA) do I need for 1 LED to turn on ? If I give 1 A to 14 leds , will they burn ?

You seem to assume that you can easily distribute current over multiple LEDs. That is not true, however. In series, ALL the current will flow through ALL the LEDs and burn them if they are not rated for 1A. In parallel, the current may not be distributed evenly between the LEDs, due to them not being an Ohm resistor.
So if you want to drive multiple LEDs, you have to set them in series and limit the current to what ONE LED is rated for.

So if I limit the current to what one led wants , the circuit will not burn ? (That's obvious , why am I asking ?) but it won't be able to turn on all LEDs ? (They will all be dim ?)
And I want to make it in parallel - if. I make it in series , only 1 led has to burn to lead the whole thing to destruction !
What if I'd drive the LEDs (sorry I'm a newbie , this might be a funny question) using transistors somehow ?