LED light circuit problem.

S

Shyamal

New Member

• Jan 1, 2012

• #1

I am using a simple circuit to light my room. Here i use 20 LED. After few days later my LED is damaged simultaneously. For this reason i need to change it again and again.
Now what cai i do for this circuit?
In my circuit i use 3 Volt power supply.
I not use voltage regulator ic.

 

H

HHaase

New Member

• Jan 1, 2012

• #2

There are many, many ways to wire LED's. Do you have a schematic for how you connected them, and what kind of LED's they are?

What is the amperage rating of the power supply?

-Hans

 

alec_t

Well-Known Member

Most Helpful Member

• Jan 1, 2012

• #3

I am using a simple circuit

Click to expand...

Obviously too simple! You must control the current through the LEDs. That would normally require at least a series resistor per LED (or per LED chain). A 3V supply allows no 'headroom' for current control. A higher supply voltage is advisable.

 

Simple Minimal

New Member

• Jan 1, 2012

• #4

You need to have a resistor ( current must not [ generally ] exceed 20mA ).

 

ronsimpson

Well-Known Member

Most Helpful Member

• Jan 1, 2012

• #5

We need to know more information.
LED current? 20mA, 100mA, 1A
LED voltage? 1.5V, 3V (never drive a 3V LED at 3V)

 

N

niju.cvra

New Member

• Jan 1, 2012

• #6

use a resistor

use a 150e resistor series with each led

 

ronsimpson

Well-Known Member

Most Helpful Member

• Jan 1, 2012

• #7

I don't see we can help. We do not know if he is using "3V leds". If he is lighting a room then he might be using 3watt LEDs. OR Maybe he is using 20mA LEDs. Picking a resistor with out knowing voltage or current seems a wast of time.