You can salvage some nice motors out of optical drives but they can be tricky to control. That’s because ... demonstrating how it works. His test circuit uses six 2N2222 transistors to protect ...

Integrate the motor to a machine, based on analysis of motor equations for voltage, current, torque and speed. Implement the motor and accompanying rotary sensor into a motor control circuit in both ...

The Cassettone works by substituting the trim pot that controls the speed of the tape player ... There’s also a polished Google doc that includes a schematic and the pattern pieces for making ...

Approx circuit of DC-51 motor speed controller (D6 and D8 are ... The variable speed set point is provided by the 10kΩ speed control potentiometer on the front panel of the unit and modified by ...