Hi Everyone,

I've got a little project where I need to control a hydraulic power-pack
with a PIC.

The manufacturers tell me that the hydraulic unit can consume 250A max
when it's running at full pressure. It's running off a 12v car battery.
It will only operate for (max) 1 minute, twice a day. It should also
only use about 100A as the load it's moving is quite small compared to
it's maximum. It has solenoid valves which consume 4A at 12v.

I need to control this unit completely from my PIC, by that I mean the
(possible) 250A going in, and the solenoids.

The solenoids I can happily do with a relay or a power MOSFET, but I'm
having trouble finding something that can switch the 250A easily.

Is it wise to parallel-up power MOSFET's? I've found some (IRFP3703)
which are rated at 209A and 30V, but wasn't sure if they let their magic
smoke out when they're paralleled..

Cheers,

Tim

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