Hello,

I am planning or was planning to make a simple light for my room that can be lighted by a 12 volt battery. I will use it for electric outages purposes or maybe for regular daily use.

But I have some problem. Light-emitting diode tube is so expensive. It costs $20+ and I can't afford it.

But 1 piece of light-emitting diode is cheap so I think I'm gonna use it instead.

But what items should I need? The board? How many light-emitting diode do I need?

I don't want to use a circuit board as I don't know how to use or work with it so I will just stick with a parallel circuit.

Thank you a lot.√

 

I mean in my thread is I will make my own LED tube or so...

 

You've been told not to put the LEDs in parallel. It will work, but there are good reasons not to do it. Care to show the schematic you will use?

If you want to know about LEDs, read Chapters 1 and the first half of chapter 2 of LEDs, 555s, Flashers, and Light Chasers.

 

One AAC member converted his illuminated diarama from a 12V, 1A bulb to a 9 LED light. LEDs in series parallel, 3 strings of 3 bright white LEDs in series with 27Ω. LEDs are arranged in a circle around a 1 1/2 in dia. half plastic wheel. Power is 2 6V batteries in series for 12V.

 

But I could not connect it in series series because the LED was rated 12 v each.

 

An LED has a low voltage. Maybe your LEDs have a series current-limiting resistor with them so they can operate from 12V in a car.

 

i think so because my leds have a something something.

can you help me with my fuse??? pls...

 

Check out this product # at JAMECO : 2113041 This modual will take anywhere between 8 and 30 volts and take whatever current it needs for constant power. You can parallel as many as 30 devices. (you cannot put them in serries)