pwm fan control

[lumley32]

befor now i have used Bosch ignition Module 0227 100 203 they will switch about 8A per channel

http://www.bosch-motorsport.de/en-US/li ... 309387.pdf

or
http://uk.rs-online.com/web/p/solid-sta ... s/7360879/

that will sink 40A

depends on what your fans will draw, but that size of SSR will go up to about 100A if you get the correct ones

[ignitionautosport]

Why don't you just run a relay and switch them on/off... PWM is nice, but if it's too much effort/time/money you could always do that.

[Roverdose]

with an earlier model rover i have tried that. the older ones (although probably bigger/less efficient) could easily blow a 30amp fuse with a direct start up.

rover's solution was to have them run in series at start up and then switch to parallel at a higher temp. if i have to, i will do that.

cheers
Drew

[ignitionautosport]

Understandable, I have had to fit large fuses before as startup current is kinda high in large fans.

[Roverdose]

found a better pic..



might try another one just to make sure its not just mine that is broken.

Drew

[rover200turbo]

http://www.ebay.co.uk/itm/400286926474#ht_1216wt_1037

this is what i use to run my water pump with aux1

john