These are often used in mechanical actuators, or devices such as DC motors that must maintain a constant speed or torque.
Various technical data regarding the status of the line such as the distance of the cabins from the stations, cabin speed, DC motor current and torque, positions of the safety switches, failure checklist, active failures and wind speed motor are available to the station operators by computers.
Embedded applications (for example, Arduino, BeagleBone, and Raspberry Pi) make heavy use of GPIO for reading from various environmental sensors (IR, video, temperature, 3-axis orientation, and acceleration), and for writing output to DC motors (via PWM), audio, LCD displays, or LEDs for status.
A thyristor drive is a motor drive circuit where AC supply current is regulated by a thyristor phase control to provide variable voltage to a DC motor.
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During the 1960s and 1970s, Wouk got involved in electric and hybrid vehicles; he successfully converted a Buick Skylark vehicle with a 20-kilowatt direct-current electric motor and an RX-2 Mazda rotary engine.
Electron tube types of DC motor controls began to be developed in the 1920s but electronic controls didn’t seriously begin to displace the Ward Leonard system until thyristor controlled drives were developed in the late 1960s.
Ward Leonard Control, also known as the Ward Leonard Drive System, was a widely used DC motor speed control system introduced by Harry Ward Leonard in 1891.