Electrical circuit for controlling power supply and motor vehicle built-in device being operably connected to an external power supply
First Claim
1. An electrical circuit comprising:
- a main input for coupling to an external power supply;
a main output for coupling to an electrical device; and
a first electrical operable switch interconnected between said main input and said main output, said first electrical operable switch having an open position and a closed position, said first electrical operable switch being conductive in said closed position and being non-conductive in said open position;
at least one wake-up input to receive a wake-up signal;
at least one sleep input to receive a sleep signal; and
a bi-stable sub-circuit coupled to said main input and coupled to said first electrical operable switch, said sub-circuit being connected to said at least one wake-up input and to said least one sleep input such thata received wake-up signal energizes said bi-stable sub-circuit and a received sleep signal de-energizes said bi-stable sub-circuit;
wherein said energized bi-stable sub-circuit causes said first electrical operable switch to close and said de-energized bi-stable sub-circuit causes said first electrical operable switch to open;
wherein said bi-stable sub-circuit comprises;
a first transistor having an emitter terminal, a collector terminal and a base terminal, wherein said first transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal;
a second transistor having an emitter terminal, a collector terminal and a base terminal, wherein said second transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; and
an interposed resistor;
wherein said first transistor is coupled via its emitter terminal to said main input, via its collector terminal to a first terminal of said interposed resistor and via its base resistor to said collector terminal of said second transistor;
wherein said second transistor is coupled via its emitter to ground, via its base resistor to a second terminal of said interposed resistor and via its collector to said base resistor of said first transistor;
wherein said at least one wake-up input is coupled to a first connection line between said base resistor of said first transistor and said collector terminal of said second transistor, both being coupled;
wherein said at least one sleep input is coupled to a second connection line between said base resistor of said second transistor and said second terminal of said interposed resistor, both being coupled; and
wherein said first electrical operable switch is operable with said bi-stable sub-circuit being coupled to said second connection line.
1 Assignment
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Accused Products
Abstract
The number of electrical devices implemented in motor vehicles and supplied with electricity by the motor vehicle battery rises with each generation. The manufacturers of motor vehicles make great demands on electrical device to be built-in their motor vehicles, especially to the stand-by power consumption of the built-in devices in order to protect the motor vehicle battery from a fast and undesired unloading during the stop of the motor vehicle. The present invention relates to an electrical circuit provided to be implemented in motor vehicle built-in devices for limiting the power consumption during the stand-by thereof, i.e. to reduce the power consumption to almost no consumption. Further, the present invention relates to an electrical motor vehicle built-in device having the aforementioned electrical circuit for limiting the power consumption of the electrical motor vehicle built-in device.
17 Citations
14 Claims
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1. An electrical circuit comprising:
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a main input for coupling to an external power supply; a main output for coupling to an electrical device; and a first electrical operable switch interconnected between said main input and said main output, said first electrical operable switch having an open position and a closed position, said first electrical operable switch being conductive in said closed position and being non-conductive in said open position; at least one wake-up input to receive a wake-up signal; at least one sleep input to receive a sleep signal; and a bi-stable sub-circuit coupled to said main input and coupled to said first electrical operable switch, said sub-circuit being connected to said at least one wake-up input and to said least one sleep input such that a received wake-up signal energizes said bi-stable sub-circuit and a received sleep signal de-energizes said bi-stable sub-circuit;
wherein said energized bi-stable sub-circuit causes said first electrical operable switch to close and said de-energized bi-stable sub-circuit causes said first electrical operable switch to open;wherein said bi-stable sub-circuit comprises; a first transistor having an emitter terminal, a collector terminal and a base terminal, wherein said first transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; a second transistor having an emitter terminal, a collector terminal and a base terminal, wherein said second transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; and an interposed resistor; wherein said first transistor is coupled via its emitter terminal to said main input, via its collector terminal to a first terminal of said interposed resistor and via its base resistor to said collector terminal of said second transistor; wherein said second transistor is coupled via its emitter to ground, via its base resistor to a second terminal of said interposed resistor and via its collector to said base resistor of said first transistor; wherein said at least one wake-up input is coupled to a first connection line between said base resistor of said first transistor and said collector terminal of said second transistor, both being coupled; wherein said at least one sleep input is coupled to a second connection line between said base resistor of said second transistor and said second terminal of said interposed resistor, both being coupled; and wherein said first electrical operable switch is operable with said bi-stable sub-circuit being coupled to said second connection line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A motor vehicle built-in device comprising:
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a plurality of electrical components energized by an external power supply; and an electrical circuit for providing an electrical operable connection of said external power supply and said motor vehicle built-in device, wherein said electrical circuit comprises; a main input for coupling to said external power supply; a main output for coupling to said motor vehicle built-in device; a first electrical operable switch interconnected between said main input and said main output, said first electrical operable switch having an open position and a closed position, said first electrical operable switch being conductive in said closed position and being non-conductive in said open position; at least one wake-up input to receive a wake-up signal; at least one sleep input to receive a sleep signal; and a bi-stable sub-circuit coupled to said main input and coupled to said first electrical operable switch, said sub-circuit being connected to said at least one wake-up input and to said least one sleep input such that a received wake-up signal energizes said bi-stable sub-circuit and a received sleep signal de-energizes said bi-stable sub-circuit;
wherein said energized bi-stable sub-circuit causes said first electrical operable switch to close and said de-energized bi-stable sub-circuit causes said first electrical operable switch to open;wherein said bi-stable sub-circuit comprises; a first transistor having an emitter terminal, a collector terminal and a base terminal, wherein said first transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; a second transistor having an emitter terminal, a collector terminal and a base terminal, wherein said second transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; and an interposed resistor; wherein said first transistor is coupled via its emitter terminal to said main input, via its collector terminal to a first terminal of said interposed resistor and via its base resistor to said collector terminal of said second transistor; wherein said second transistor is coupled via its emitter to ground, via its base resistor to a second terminal of said interposed resistor and via its collector to said base resistor of said first transistor; wherein said at least one wake-up input is coupled to a first connection line between said base resistor of said first transistor and said collector terminal of said second transistor, both being coupled; wherein said at least one sleep input is coupled to a second connection line between said base resistor of said second transistor and said second terminal of said interposed resistor, both being coupled; and wherein said first electrical operable switch is operable with said bi-stable sub-circuit being coupled to said second connection line. - View Dependent Claims (12, 13)
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14. An electrical circuit comprising:
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means for coupling to an external power supply; means for coupling to an electrical device; and means for providing a first electrical operable switch interconnected between said means for coupling to an external power supply and said means for coupling to an electrical device, said first electrical operable switch having an open position and a closed position, said first electrical operable switch being conductive in said closed position and being non-conductive in said open position; means for receiving a wake-up signal; means for receiving a sleep signal; and means for providing a bi-stable sub-circuit coupled to said means for coupling to an external power supply and coupled to said first electrical operable switch, said sub-circuit being connected to said means for receiving a wake-up signal and to said means for receiving a sleep signal such that a received wake-up signal energizes said bi-stable sub-circuit and a received sleep signal de-energizes said bi-stable sub-circuit;
wherein said energized bi-stable sub-circuit causes said first electrical operable switch to close and said de-energized bi-stable sub-circuit causes said first electrical operable switch to open;wherein said bi-stable sub-circuit comprises; a first transistor having an emitter terminal, a collector terminal and a base terminal, wherein said first transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; a second transistor having an emitter terminal, a collector terminal and a base terminal, wherein said second transistor is configured with a bridge resistor interconnected between its emitter terminal and its base terminal and a base resistor connected to its base terminal; and an interposed resistor; wherein said first transistor is coupled via its emitter terminal to said means for coupling to an external power supply, via its collector terminal to a first terminal of said interposed resistor and via its base resistor to said collector terminal of said second transistor; wherein said second transistor is coupled via its emitter to ground, via its base resistor to a second terminal of said interposed resistor and via its collector to said base resistor of said first transistor; wherein said means for receiving a wake-up signal is coupled to a first connection line between said base resistor of said first transistor and said collector terminal of said second transistor, both being coupled; wherein said means for receiving a sleep signal is coupled to a second connection line between said base resistor of said second transistor and said second terminal of said interposed resistor, both being coupled; and wherein said first electrical operable switch is operable with said bi-stable sub-circuit being coupled to said second connection line.
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Specification