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US 5,345,360 AGranted
Switched receptacle circuit
AssigneeMolex Incorporated
InventorBurke J. Crane
Life of this patent
Estimating the term…
Abstract
A switched receptacle includes a latching relay selectively providing power to an outlet receptacle. The latching relay is controlled to insure that a flux density in the set mode is no greater than that which is needed to actuate the latching relay while allowing the latch to remain in the actuated position even if this power is terminated. Current limiting is provided for resetting so that zero flux density results when unlatching.
Claims19
A control circuit controlling switching of a latching relay having a relay coil and an electrical contact switched by said relay coil, said relay coil being latched when connected to a positive polarity voltage source and unlatched when connected to a negative polarity voltage source, comprising:
- a power source developing a voltage at a select potential;
- a first switch circuit selectively operated to be in a neutral state or an actuated state, said first switch circuit conducting electricity when it is operated to be in the actuated state and not conducting electricity when it is operated to be in the neutral state;
- a second switch circuit selectively operated to be in a neutral state or an actuated state, said first switch circuit conducting electricity when it is operated to be in the actuated state and not conducting electricity when it is operated to be in the neutral state;
- circuit means for connecting said first and second switch circuits between said power source and said relay coil so that when said first switch circuit is in the actuated state it conducts electricity to apply said potential of said power source to said relay coil at positive polarity to latch the relay coil, and when said second switch circuit is in the actuated state it conducts electricity to apply said potential of said power source to said relay coil at negative polarity to unlatch the relay coil;
- and
- current limit means electrically connected to said second switch circuit for limiting current conducted to unlatch said relay coil.
3 more elements
A switched power receptacle comprising:
- a power source developing a voltage at a select potential;
- a latching relay having a relay coil and an electrical contact switched by said relay coil, said relay coil being latched when connected to a positive polarity voltage source and unlatched when connected to a negative polarity voltage source;
- an outlet receptacle connected in series with said electrical contact to said power source;
- a first switched circuit selectively operated to be in a neutral state or an actuated state, said first switch circuit conducting electricity when it is operated to be in the actuated state and not conducting electricity when it is operated to be in the neutral state;
- a second switch circuit selectively operated to be in a neutral state or an actuated state, said second switch circuit conducting electricity when it is operated to be in the actuated state and not conducting electricity when it is operated to be in the neutral state;
- circuit means for connecting said first and second switch circuits between said power source and said relay coil so that when said first switch circuit is in the actuated state it conducts electricity to apply said potential of said power source to said relay coil at positive polarity to latch the relay coil, and when said second switch circuit is in the actuated state it conducts electricity to apply said potential of said power source to said relay coil at negative polarity to unlatch the relay coil;
- and
- current limit means electrically connected to said second switch circuit for limiting current conducted to unlatch said relay coil.
5 more elements
A switched receptacle comprising:
- a power source developing a voltage at a select potential;
- a latching relay having a relay coil and an electrical contact switched by said relay coil, said relay coil being latched when connected to a positive polarity voltage source and unlatched when connected to a negative polarity voltage source;
- an outlet receptacle connected in series with said electrical contact to said power source;
- an H-bridge switching circuit connected between said power source and said relay coil;
- control means for controlling operation of said H-bridge switching circuit between a set mode and a reset mode, said set mode comprising controlling said H-bridge switching circuit to apply said potential of said power source to said relay coil at positive polarity to latch the relay coil, said reset mode comprising controlling said H-bridge switching circuit to apply said potential of said power source to said relay coil at negative polarity to unlatch the relay coil;
- and
- current limit means operatively connected to said H-bridge switching circuit for limiting current conducted to unlatch said relay coil.
4 more elements
A switched receptacle comprising:
- a power source developing a voltage at a select potential;
- a latching relay having a relay coil and an electrical contact switched by said relay coil, said relay coil being latched when connected to a positive polarity voltage source and unlatched when connected to a negative polarity voltage source;
- an outlet receptacle connected in series with said electrical contact to said power source;
- an H-bridge switching circuit connected between said power source and said relay coil;
- control means for controlling operation of said H-bridge switching circuit between a set mode and a reset mode, said set mode comprising controlling said H-bridge switching circuit to apply said potential of said power source to said relay coil at positive polarity to latch the relay coil, said reset mode comprising controlling said H-bridge switching circuit to apply said potential of said power source to said relay coil at negative polarity to unlatch the relay coil.
2 more elements
Dependencies are inferred from the claim text.