lohwenli, i was wondering something...bout the VR controller, not the PWM controller.

Assuming we are using a low current dc fan..say <1.0A. We are able to put the potentiometer in series wif the load (fan), and by doing this,we can vary the current across the load and current through it. What if i want to control the current through the fan only, while maintaining the voltage across it? Will connecting the potentiometer in parallel with the load simply be able to do it?

Edit: Did some calculations and found out that it cant be done..nvm then.

This post has been edited by x800: Oct 4 2006, 08:40 PM

*deleted*

misunderstanding..

This post has been edited by x800: Oct 4 2006, 08:39 PM

forget what i posted earlier shawty..i had a little misunderstanding of the concept..

i deleted it not bcoz of u leh..its bcoz i'll look silly if other knowledgable ppl read that..coz i wanted to make sumthing that is quite impossible w/o using PWM.. eh u oso delete ur quote lar..

yeah, realised that already.and btw, thx for the info bout the reverse voltage thingy.u reminded me what my lecturer taught me last sem

This post has been edited by x800: Oct 5 2006, 05:53 PM