However, in this case, the output of the 555 is connected to a MOSFET which is used to vary the speed of a computer fan motor.

This paper presents a DC motor speed controlling technique under varying load condition. The linear system model of separately excited DC motor with Torque-variation is designed using PID controller.

DC motor speed controller BMD-20DIN ver.2 Smart Motor Devices Smart Motor Devices Smart Motor Devices has improved the controller BMD-20DIN by expanding ways to control speed of DC motor – new ...

The DC motor speed control project is intended to manage the pace of a DC motor by means of an 8051 sequence micro-controller. The pace of DC motor is straightforwardly relative to the voltage ...

He hooks up the SN754410 to two motors, giving him speed and direction control for both based on the duty cycle of a PWM signal entering the chip for less than $2.50.

The circuit in the figure provides three levels of speed control for a dc motor, using a PC’s parallel port (LPT1). A C++ program performs the control functions by allowing the signals from the ...

The new DMC4040SSD dual mosfet from Diodes is designed for use in low voltage, single and three phase brushless dc motor control applications.