Patent ID: 7961584
Filing Date: 2011-06-14
Classification: G11B

Abstract:
1. An operating current modifying device for a power generating element, wherein the power generating element initially generates an output power when an operating current is larger than a threshold current of the power generating element, and the threshold current is related to a temperature of the power generating element in a function relationship, the operating current modifying device comprising: a threshold current modifying module for receiving a temperature signal from the power generating element to output a threshold current modifying signal according to the temperature signal and the functional relationship; a power modifying module for receiving a power feedback signal from the power generating element and a target power signal to output an operating current modifying signal; a current compensating module for receiving 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; and a power control module for receiving the operating current compensating signal and the threshold current compensating signal to adjust the operating current.