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19v 5A PSu

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Hello, I would like to build my own Laptop Psu because the original one broke. Could somone kindly enough point me to a Circuit of a Fixed PSU which gives me 19v @ 5A ??

ALSO since a PWM Power Supply does not heat up that much, is it good for a Laptop??

thanks a lot

PS.. Speaking of PWM.. I have a motor which takes 24v @ 14A. Does anyone have a circuit to controll such a motor?? the supply of this motor is two large batteries with 12v each in series.

Thanks a lot.


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Hi Dude  ;D

First from this site: http://www.electronics-lab.com/projects/motor_light/003/ with a bigger MOSFET and a good heatsink this one will work fine.
And here is another one which is made for 12V but could easily be modified: http://www3.telus.net/chemelec/Projects/PWM/PWM.htm
And one more: http://home.att.net/~wzmicro/3525.html

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