Hi Everyone,

I am trying to light a series of led strips with 12 volt 2 amp power supply.

I made a diagram, please check the image below:



The smps supply is below:



When I am trying to power the full circuit, the green led on smps is turning on and off every 1 second.

when I tried to light the circuit with 12v inverter battery, only half of the strips are turning on. I checked, there is no short circuit and I tested all the strips before adding to the circuit.

I think the strips are added in parallel, so there will be no voltage drop.



can anyone help me?

thanks

 

I made a diagram, please check the image below:

Your diagram shows the power supply shorted and no one who knows anything draws color coded schematics.

Check your wiring and LED polarity.

 

Your diagram shows the power supply shorted and no one who knows anything draws color coded schematics.

Check your wiring and LED polarity.

shorted? where, in the end?

yes, I checked the polarity of leds

 

shorted? where, in the end?

The vertical line on the right side of your diagram shows a short between 12V and 0V.

 

The vertical line on the right side of your diagram shows a short between 12V and 0V.

OMG! I tried to connect to smps, could my strips be effected? and battery

 

What is the current taken by each colour on each strip. I have just looked on ebay at 5 meter RGB led strips and they quote 2 amps per colour. (6 amps total per strip.) so 33 of these would take 198 amps. Which is VERY MUCH MORE than 2 amps.

Edit. If each strip just consists of 4 LEDs of each colour with the current limiting resistro values shown in your first post then current will not be a problem.
Les.

 

What is the current taken by each colour on each strip. I have just looked on ebay at 5 meter RGB led strips and they quote 2 amps per colour. (6 amps total per strip.) so 33 of these would take 198 amps. Which is VERY MUCH MORE than 2 amps.

Les.

each strip has 4 leds of each color. I used resistance for 4 leds i.e. 10 mA

so, total current that one strip should take is 30 mA. so 33 strips should take 33 X 0.03 = 1 Amp.

Please correct me if I am wrong. I am confused now.

thanks

 

You are correct. At first I thought you were using the sort of LED strips that are sold on Ebay.

Les.