ELECTRONIC CIRCUIT FOR SAFELY CLOSING A MOTOR-DRIVEN DOOR OF A RAIL VEHICLE
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United States of America Patent
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Issued Date -
Jul 6, 2017
app pub date -
May 21, 2015
filing date -
May 22, 2014
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Abstract
The disclosed embodiments relate to an electronic circuit for a motor-driven door of a rail vehicle, said electronic circuit having a series circuit of a first non-linear element and a first controllable switch between the motor terminals. The first non-linear element is poled such that the resistance thereof to a current generated by the drive motor during a closing movement of the door is greater than during an opening movement. If a supply voltage for the door is present, the resistance of the first switch is effected relative to the resistance when said supply voltage is absent. The invention further relates to a door module for a rail vehicle having such an electronic circuit, to a rail vehicle for such a door module, and to a use of the electronic circuit.
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