| 摘要 |
An electronic brake system for D.C. motors that utilize an electronic switching device in parallel with the motor upon the removal of a D.C. source. A bias circuit is connected to the switching device to keep it in the OFF condition while the D.C. source is applied to the motor. Upon disconnecting the D.C. source, through another switch, the electronic switching device can also be independently biased to permit the motor to coast. A properly biased FET can be used as the electronic switching device with a voltage limiting device connected from the gate to the source, such as a zener diode.
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