_all_ professional motor controls in remote controlled cars/ships/planes is done with pulse width modulation - get the idea? Of course you'll have to apply some shielding and some filtering on the supply lines.
Goto altavista/google or whichever search engine you prefer and do a search on +mosfet +speed +controller ALtavista will give you about 2500 hits, there are a few useable ones already on the first page. On the 4QD page http://www.4qdtec.com/pwm-01.html you'll also find a nice explanation why there is no greater danger with a proper PWM controlled motor. Though the supply voltage is switched by the transistors, the current inside the motor actually is quite continous because of the motor windings' own inductance! Uwe. > Musharraf Hanif wrote: > > Hello, > > Can any one help me in finding/developing a DC series motor speed > and torque controller. I want to be able to control the operational > paremeters like Voltage and/or Current through a microcontroller > (8051 architecture). One of the possible ways that i have found is > the Pulse Width Modulation. However, I am affraid of the effects of > sudden and drastic changes in Current and Voltage on the nearby RF > equipment. > > Musharraf Hanif -- Author: Uwe Zimmermann INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
