Help identifying components on xpe star

jonathandowers

Newly Enlightened
Joined
Mar 23, 2011
Messages
55
This is my first time taking apart a LED module, and was wondering about the components on the star:
kUyJ4s6.jpg

I see there's two 7135-31A chips. On googling for it, it's a linear regulator. Why is there need for a regulator on both the positive and negative terminal?

And I'm not sure exactly what C1 is; is it a capacitor?
 
Last edited:

evilc66

Enlightened
Joined
Jul 22, 2008
Messages
276
C1 is just a capacitor for filtering the incoming power. The two constant current regulators are probably in parallel to give ~700mA to the LED.
 
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