Adding current load to PWM output circuit?
Posted: Mon Apr 21, 2008 6:40 pm
Hi all, didn't think I'd be the first person to post here but I have a couple questions. I believe I read that the PWM output circuits are limited to 5 amps. Would it be possible to add an extra mosfet to increase this? I have an A/W intercooler pump that is rated for 8 amps at 12 volts (Jabsco Centripuppy). I've built a seperate PWM controller from Jaycar electronics that can handle 10 amps but I'd obviously rather use the GPIO for simplicity.
Also, I've never written any code besides intro to VB in college. Could I (or some nice people) write a code to turn the pump on at a certain coolant temp and relay the pump straight to battery at full throttle? I could accomplish this with a temp sensor and a throttle switch but I'd again, rather keep it simple.
Thanks,
antony
1990 VW G60, MS2 V3.0
Also, I've never written any code besides intro to VB in college. Could I (or some nice people) write a code to turn the pump on at a certain coolant temp and relay the pump straight to battery at full throttle? I could accomplish this with a temp sensor and a throttle switch but I'd again, rather keep it simple.
Thanks,
antony
1990 VW G60, MS2 V3.0