Patent ID: 7673462

Claim:
A method of controlling a thermoelectric device to affect a temperature of an internal thermal zone in a hard disk drive, comprising the steps: applying a first potential difference between an electrical contact pair to enable a first heat transfer from an internal heat transfer interface included in a thermal interface to an exterior heat transfer interface thermally coupling to the exterior of said hard disk drive; wherein said thermal interface is thermally coupled to said internal thermal zone of said hard disk drive; and applying a second potential difference between said electrical contact pair to enable a second heat transfer from said exterior heat transfer interface to said internal heat transfer interface; wherein a sign of said first potential difference is an opposite of the sign of said second potential difference; wherein the step applying said first potential difference, comprises the step: forcing a driving signal toward said first potential difference between said electrical contact pair; and wherein the step applying said second potential difference, comprises the step: forcing said driving signal toward said second potential difference between said electrical contact pair.