Better ways to control a blower motor?

[dave w]

The MOSFET (http://en.wikipedia.org/wiki/MOSFET) used in the Jameco PWM kit is the current limiting component. Using a MOSFET with a higher current rating might be an option? Using a high current MOSFET will eliminate the need for a solid state relay. With some homework, a Do It Yourself PWM circuit could be designed to use a higher current MOSFET without using the Jameco kit or using a solid state relay. http://www.555-timer-circuits.com/pwm-controller.html

Here is a 30 amp controller, no homework needed.
http://www.electronickits.com/kit/co...or/CKMX066.htm


dave w