Sequential control circuit
First Claim
1. A control circuit for sequentially driving a plurality of electrical loads from a single power supply comprising:
- a converter circuit for receiving a DMX compatible digital control signal and extracting a plurality of address bits therefrom;
a decoder circuit for receiving the digital address bits and in response generating a plurality of enable signals, each corresponding to a particular electrical load, a subset of the load enable signals being in an active state and each other enable signal being in an inactive state at any one time; and
a relay circuit for receiving the plurality of enable signals, and in response passing an electrical drive signal to each electrical load corresponding to the subset of enable signals that is in the active state, wherein the relay circuit comprises a plurality of discharge circuits for rapidly discharging each electrical load to snap-off a load when the enable signal corresponding to that load changes from the active state to the inactive state.
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Accused Products
Abstract
A control circuit for driving a plurality of electrical loads, one at a time, has a converter circuit for receiving a DMX compatible digital control signal and extracting a plurality of address bits therefrom. A decoder circuit receives the digital address bits and generates a plurality of enable signals, each corresponding to a particular load. One of the load enable signals is in an active state and each other enable signal is in an inactive state at any one time. A relay circuit for receives the enable signals, and in response passes an electrical drive signal to the electrical load corresponding to the enable signal that is in the active state. The relay circuit preferably includes a plurality of relay devices each coupled to one of the enable signals and a plurality of discharge circuits for rapidly discharging each electrical load when the enable signal corresponding to that load changes from the active state to the inactive state.
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Citations
27 Claims
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1. A control circuit for sequentially driving a plurality of electrical loads from a single power supply comprising:
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a converter circuit for receiving a DMX compatible digital control signal and extracting a plurality of address bits therefrom;
a decoder circuit for receiving the digital address bits and in response generating a plurality of enable signals, each corresponding to a particular electrical load, a subset of the load enable signals being in an active state and each other enable signal being in an inactive state at any one time; and
a relay circuit for receiving the plurality of enable signals, and in response passing an electrical drive signal to each electrical load corresponding to the subset of enable signals that is in the active state, wherein the relay circuit comprises a plurality of discharge circuits for rapidly discharging each electrical load to snap-off a load when the enable signal corresponding to that load changes from the active state to the inactive state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A control circuit for sequentially driving a plurality of electro luminescent loads from a single power supply comprising:
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a decoder circuit for receiving a digital address signal and in response generating a plurality of enable signals, each corresponding to a particular electrical load, a subset of the load enable signals being in an active state and each other enable signal being in an inactive state at any one time; and
a relay circuit comprising a plurality of first relay devices each coupled to one of the plurality of enable signals as well as to the load corresponding thereto, wherein when said enable signal is in the active state the relay device couples the electrical drive signal to the corresponding electrical load, and a plurality of discharge circuits for rapidly discharging each electrical load to snap-off a load when the enable signal corresponding to that load changes from the active state to the inactive state. - View Dependent Claims (25, 26, 27)
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Specification