Operating current modifying device and method
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United States of America Patent
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Jun 14, 2011
Grant Date -
Aug 13, 2009
app pub date -
Mar 5, 2009
filing date -
Jan 26, 2006
priority date (Note) -
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Abstract
An operating current modifying device is provided for a power generating element. The power generating element generates an output power when the operating current is larger than a threshold current in the power generating element. A functional relationship is between the threshold current and the temperature of the electrical device. The operating current modifying device includes a threshold current modifying module, a power modifying module, a current compensating module, and a power control module. The threshold current modifying module receives a temperature signal from the power generating element to output a threshold current modifying signal according to the temperature signal and the functional relationship. The power modifying module receives a power feedback signal from the power generating element and a target power signal to output an operating current modifying signal. The current compensating module receives the threshold current modifying signal and the operating current modifying signal to distribute the operating current modifying signal into an operating current compensating signal and a threshold current compensating signal. The power control module receives the operating current compensating signal and the threshold current compensating signal to adjust the operating current.
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