Electric brake and clutch assemblies are equipment drive components that consist of electric brakes for slowing or stopping shafts and electric clutches for connecting or disconnecting shafts. Battery-powered load cells apply voltage signals to a web and compare the resulting web tension to a tension set point. Correcting the current output produces a braking torque that is proportional to the supplied current. Engaging the clutch transfers power from an engine to devices such as a transmission and drive wheels. Disengaging the clutch stops the power transfer, but allows the engine to continue turning. Braking slows or stops the movement of the coupled shafts by using permanent magnets, hysteresis, eddy current, or magnetic particles. Typically, electric brake and clutch assemblies are used in applications that require fast response times and precise tension control.