VOLTAGE CONTROLLED CURRENT DRIVER POWERED BY NEGATIVE VOLTAGE RAIL
First Claim
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1. A current drive circuit comprising:
- an input terminal for receiving a positive voltage control signal;
a power input for connection to a negative voltage power supply; and
circuitry configured to supply a controlled current to an attached load from the negative voltage power supply, a magnitude of the controlled current based on the positive voltage control signal.
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Abstract
A method and current drive circuit is provided that accepts a positive voltage input signal and supplies power to a load from a negative voltage rail.
7 Citations
20 Claims
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1. A current drive circuit comprising:
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an input terminal for receiving a positive voltage control signal; a power input for connection to a negative voltage power supply; and circuitry configured to supply a controlled current to an attached load from the negative voltage power supply, a magnitude of the controlled current based on the positive voltage control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for supplying current to a load comprising:
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receiving a positive voltage input signal from a controller; supplying current to the load from a negative voltage power supply where a magnitude of the current is based on a magnitude of the positive voltage input signal. - View Dependent Claims (14, 15, 16, 17)
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18. A system for supplying power to inductive loads comprising:
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at least one inductive load; at least one negative supply current driver circuit configured to supply current to the inductive load from a negative voltage power supply where a magnitude of the current is selected based on a magnitude of a positive voltage input signal. - View Dependent Claims (19, 20)
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Specification