HELP NEEDED WITH MY CIRCUIT FOR A LEVEL SYSTEMS!!!!

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Rob C
Rob C's picture
HELP NEEDED WITH MY CIRCUIT FOR A LEVEL SYSTEMS!!!!

Hi

I have designed a lamp for my a level product, in it is a circuit controlled using a PIC.

I have the PIC and 12 * 10mm blue LED's running off a 6v battery pack. I then have one output pin connected to a MOSFET.
From the MOSFET i have a 12v supply running two 52mm white LED clusters, which are supposed to run on 12v apparently!!!

The problem i'm having is, the MOSFET is constantly on, regardless of the program i use, so the white LED's are always on, and i cannot change that whatsoever!!!

I also wanted to fit varible resistors before my clusters to change the brightness if needed, but apparently spike can affect the MOSFET, is there a a way round this?!!

I have just joined this website and don't know if this is what i am supposed to write about but i need help as soon as possible! any help from anyone would be great, i can probably send you a circuit diagram if needed!

Thanks

Rob

 

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