I'm in the process of making a fan control circuit and just wanted to make sure I've got all the right bits, this is what I'm working from; ........BUT the article is in german so I just wanted to make sure it would work and that there isnt anything I should be aware of that might have been mentioned in the text.......... Cheers guys ..........
I'd use this variation: Gives about 6.5v to 10/10.5v (which is as much as you'll get from a normal linear regulator) If you want some English text, look here
cpemma's is the better. Alternatively you could try: http://bit-tech.net/article/52/5 or http://bit-tech.net/article/51/1 but i guess you've already seen those
Cheers for the help guys, I already had most of the parts otherwise I would have probably done the pwm way, just wanted to make sure I was not making some huge mistake as I dont really know too much about electronics to say the least !! Cheers Ed
For clarity here, The most you can get from a linear regulator is the supply voltage - the dropout voltage, wich for the typical case mod scenario is 12V - 1.5V = 10.5 V or thereabouts, it varies a bit under load. If you could contrive a way to supply more source voltage, or use a regulator with a smaller dropout, you can get better than 10.5V, it's not a magic number. I tend to use cpemma's design myself, because I like limiting the lower end.
