Automatic output power limiting electrical device
First Claim
1. An electrically powered device deriving power from an incoming ac power source to produce output power to drive the device regardless of whether the incoming ac power source is of a first type of vower source or a second type of power source, the first type of power source having a higher voltage and lower frequency than the second type of power source having a lower voltage and higher frequency than the first type of power source, the device comprising:
- a first input power line and a second input power line, said first and second input power lines being connected to said incoming power source and having opposite polarity;
first circuitry, connected to the second input power line, that determines the current drawn from the incoming power source; and
second circuitry that receives a signal from said first circuitry indicative of the current drawn from the incoming power source and that modulates the voltage on the first input power line to drive the device, based on at least the signal from said first circuitry indicative of the current drawn from of the incoming power source, using a high output power if it is determined that the incoming power source is a higher voltage and lower frequency power source and using a low output power if it is determined that the incoming power source is a lower voltage and higher frequency power source.
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Accused Products
Abstract
An eletrical device derives power from an incoming power source to produce output plower to drive the device. The device includes circuitry that determines at lehst one characteristic of the incoming power source, and adjusts the output power used to drive the device based on the characteristic or characteristics of the incoming power source.
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Citations
17 Claims
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1. An electrically powered device deriving power from an incoming ac power source to produce output power to drive the device regardless of whether the incoming ac power source is of a first type of vower source or a second type of power source, the first type of power source having a higher voltage and lower frequency than the second type of power source having a lower voltage and higher frequency than the first type of power source, the device comprising:
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a first input power line and a second input power line, said first and second input power lines being connected to said incoming power source and having opposite polarity; first circuitry, connected to the second input power line, that determines the current drawn from the incoming power source; and second circuitry that receives a signal from said first circuitry indicative of the current drawn from the incoming power source and that modulates the voltage on the first input power line to drive the device, based on at least the signal from said first circuitry indicative of the current drawn from of the incoming power source, using a high output power if it is determined that the incoming power source is a higher voltage and lower frequency power source and using a low output power if it is determined that the incoming power source is a lower voltage and higher frequency power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device for driving an electrically powered device regardless of whether an incoming ac power source is of a first type of power source or a second type of power source, the first type of power source having a higher voltage and lower frequency than the second type of power source having a lower voltage and higher frequency than the first type of power source, comprising:
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a first input input power line of positive polarity and a second input power line of negative polarity, said first and second input power lines being connected to said incoming power source; first circuitry, connected to the second input power line, that determines the current drawn from the incoming power source; and second circuitry that receives a signal from said first circuitry indicative of the current drawn from the incoming power source and that provides an output signal based on the at least the signal from said first circuitry indicative of the current drawn from the incoming power source and modulating the voltage on the first input power line to drive the device, using a high output power level if it is determined that the incoming power source is a higher voltage and lower frequency power source, and using a low output power level if it is determined that the incoming power source is a lower voltage and higher frequency power source. - View Dependent Claims (10, 11, 12, 13)
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14. A method for driving an electrically powered device regardless of whether an incoming ac power source is of a first type of power source or a second type of power source, the first type of power source having a higher voltage and lower frequency than the second type of power source having a lower voltage and higher frequency than the first type of power source, comprising:
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determining at least the current drawn from the incoming power source on a first input power line or second input power line, the first and second input power lines having opposite polarity; and modulating power on the first input power line to drive the electrically powered device based on at least the current drawn from the incoming power source, using a high output power level if it is determined that the incoming power source is a higher voltage and lower frequency power source, and using a low output power level if it is determined that the incoming power source is a lower voltage and higher frequency power source. - View Dependent Claims (15, 16, 17)
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Specification