This 8051 microcontroller-based control circuit adjusts the speed of a small permanent-magnet dc motor via photosensors (see the figure). The circuit can find applications in light-tracking ...

Prior knowledge needed: ECEA 5340 Sensors and Sensor Circuit ... AC motor control components and systems, both manual and automatic. This will culminate in training for you on AC variable speed drives ...

The circuit in this Idea for Design 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 ...

technique to control the speed of the DC motor. Furthermore, the module can also be used to drive a single four-line two-phase stepper motor. Next is the verified circuit diagram of the L9110 ...