| 摘要 |
<p>SPARKLESS CIRCUIT FOR LOW HORSEPOWER ELECTRONIC MOTOR BRAKE A control circuit for connecting and disconnecting an electronic motor brake with an AC motor and a source of AC power over electromechanical relay contacts wherein optocoupled circuits operatively control energization and deenergization of a braking circuit with minimal time delay and provide operational response of the relay contacts in a substantially sparkless manner to promote contact life.</p> |
