Electronics > Projects, Designs, and Technical Stuff

My constant current load - 90W , 3A 30V

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blackdog:
Hi Spikee,

For the best sharing of the currents give eacht Fet a small Source resistor (0.1 Ohm)
And, don't forget to place the Fets on the good site of the heatsink!

This is the way to do it...


Kind regarts,
Blackdog

Spikee:
Can i use the wires as source resistor ?
i can 4-wire measure it to be exact.

robrenz:
Copper has a large resistance variation with temperature change so it would not be as good as a low temperature coefficient resistor

Spikee:
i have one laying around but another ... guess i will have to order another one from farnell.

blackdog:
Hi Spikee,

0.1 Ohm wire resistor... Mmmm

~ 9cm, copper wire, 0.1mm diameter.

Try it,

Kind regarts
Blackdog

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