for driving LED, what is sourc sinc?

Hesam Kamalan

New Member

• Aug 14, 2006

• #1

hi,
for driving LED, what is sourc sinc?

 

qratman

New Member

• Aug 14, 2006

• #2

Do you mean what's the difference between sourcing and sinking or something else??

 

Hesam Kamalan

New Member

• Aug 14, 2006

• #3

yes, thanks. guide me please.

 

justDIY

Active Member

• Aug 14, 2006

• #4

you source current from the high side and sink current to the low side ... typically sinking current, or low side switching, is more efficient, since you can use N channel switches, n-bjt or n-fet. so, knowning this, most led gizmos have the anodes of the leds connected to the postive rail (most likely through a resistor) and then sink current with a low side switch.

 

P

patan_mustafa

New Member

• Aug 15, 2006

• #5

this figure helps you
**broken link removed**

 

Hesam Kamalan

New Member

• Aug 15, 2006

• #6

patan_mustafa said:

this figure helps you
**broken link removed**

Click to expand...

Thanks in advance