Actuator module, system for locking-unlocking a door
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United States of America Patent
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Mar 24, 2015
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N/A
app pub date -
Mar 18, 2013
filing date -
Oct 1, 2010
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Abstract
The present invention concerns an actuator module (1) comprising an actuating unit (3), said actuating unit comprising a solenoid (31) having a first (31′) and a second (31″) electric terminal, capable, when excited, of generating an electromagnetic field and a PTC (Positive Temperature Coefficient) resistor (32) connected in series with said second electric terminal (31) of said solenoid (31), said actuator module (1) being characterized in that said actuating unit (3) can be controlled by activation signals and protection signals, and in that it comprises a switch circuit (33, 34), connected between said first (31′) and second (31″) electric terminal, said switch circuit (33, 34) allowing the passage of current through said solenoid (31) and said PTC resistor (32) by said activation signals; and preventing the passage of current through said solenoid (31), but allowing the passage of current through said PTC resistor (32), by said protection signals.
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