The IRF520 module will be fine at 2A if heatsinked.
Get a TO-220 Heatsink (6021 Type) from jaycar. Its $1.45, plus paste and washer.
I'll measure what mine is doing over the next few nights - with heaters for 4" and 8" scopes.
Or use the freetronics NDRIVE Damien suggested - that's great and only $4 ! The freetronics site has the wiring for it also.
Just remember to run the 12V and GND from the power input directly to whatever mosfet module you use and also to the arduino (as in the diagrams and pics in my post). The mosfet power doesn't come from the arduino.
Quote:
Originally Posted by DavidTrap
Hi Chris,
Just wondering if you've had a chance to find any higher power modules. I'm a complete novice at this sort of electronics, so really appreciate any assistance you can offer.
Can you suggest a heatsink for the MOSFET module pictured in your build? I'd like to be able to cope with a 2 amp load through the dew strip.
I had a look at the N-MOSFET that Damien suggested. I'm not sure if that is compatible with your project - I think it triggers differently?
Regards,
DT
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