Power Supply.

[AtomSoft]

I want to make a simple LED project im sure it will use like 2A i was wondering instead of buying a 5v 2A supply can i parallel 2 5v 1A cellular chargers to provide the power needed?

Not in series but PARALLEL ...

 

[ericgibbs]

I want to make a simple LED project im sure it will use like 2A i was wondering instead of buying a 5v 2A supply can i parallel 2 5v 1A cellular chargers to provide the power needed?

Not in series but PARALLEL ...

hi atom,
Whats the spec on the LED.? ie: forward voltage drop.?

 

[AtomSoft]

Here is the PDF i have 2 colors:

https://www.electro-tech-online.com/custompdfs/2010/12/datasheetBR5379K.pdf

MPG5379K
and
BR5379K

what does that have to do with my question?

can i parallel 2 5v 1A cellular chargers to provide the power needed?

 

[ericgibbs]

Here is the PDF i have 2 colors:

https://www.electro-tech-online.com/custompdfs/2010/12/datasheetBR5379K-1.pdf

MPG5379K
and
BR5379K

what does that have to do with my question?

Your pdf dosnt fully download.

 

[AtomSoft]

Red LED 5x2.5mm BR5379K - dipmicro electronics

Green LED 5x2.5mm MPG5379K

 

[ericgibbs]

Red LED 5x2.5mm BR5379K - dipmicro electronics

Green LED 5x2.5mm MPG5379K

They are both rated at 20mA 1.7V and 2.1Vfwd respectively

It would depend how you want to connect them in order to determine the use of two psu's.

 

[MikeMl]

Since you are hooking up many LEDs in a series-parallel connection, why not just split into two groups, where each is powered with it's own wall-wart?

 

[AtomSoft]

i just wanted to know can i put 2 separate power supplies in parallel and get 2x the current?

 

[MikeMl]

It is not really a good idea. Suppose one puts out 5.0V, while the other puts out 5.1V. If you connect a 1.5A load to the paralled supplies, the second will try to put out the full 1.5A, while the first does nothing. If the supplies are "current-limited", then the second will put out the full 1A, while the first will supply the other 1/2A, while the voltage will settle to 5.0V.

 

[AtomSoft]

So basically i can either power both separate or use a 5v 2A supply (which i do have)

 

[4pyros]

Atom; I general it is not a good idea to combine power supplys, unless thay are carefully matched. Andy