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that is correct, I'd like just to add that if bidirectional control is not needed, a MOSFET transistor can be used. There are "logic-level" N-channel MOSFETs (for example RFP3055LE) that can be controlled directly by a logic output. Simple and better solution than a BJT.
Not to hijack this thread, however I have a question that I believe is in line with this topic so I thought I'd ask it here instead of starting a new thread.
What would you recommend for controlling the speed of a higher current DC motor? The motor is a 100W MY68 model (24V and rated for 6A, 2300 rpm) and I would like to be able to reverse the direction of rotation.
I am thinking about using the PWM module on a PIC18F4550 (or any PIC with PWM capabilities for that matter) and a few power Mosfets in an H-bridge configuration. The problem is I believe sizing components carefully so the system is reliable long term and using adequate protection so that I won't have any components die because of excessive current/heat.
thanks 4 guiding. i m located at Karachi, Pakistan. what about u?
i need code of this prj but when u insert rpm motor will rotate at this speed? i now about its diagram but problem of its code of controlling the duty cycle which is responsible for increasing the speed of motor.
hi, cud u pls send the ckt u used to interface the motor with the microcontroller used, i dont know, how to connect the motor with the 8051, pls do it soon, last time i connected, something went drastically wrong, its my most urgent request, pls help...