FAN DETECTION AND CONTROL CIRCUIT AND ELECTRONIC DEVICE HAVING THE SAME
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United States of America Patent
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Issued Date -
Jan 5, 2017
app pub date -
Jul 22, 2015
filing date -
Jul 2, 2015
priority date (Note) -
Abandoned
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Abstract
A fan detection and control circuit for a storage device includes an extension chip configured to output a control signal, a plurality of transmission units, a plurality of control units and a fan detection and control chip electrically coupled to the extension chip, the transmission units and the control units. Each transmission unit corresponds to a fan. Each control unit is electrically coupled to a transmission unit from amongst the plurality of transmission units. The fan detection and control chip receives the control signal and outputs a pulse signal and a detection signal via the transmission units and the control units. When the fan is connected to the corresponding transmission unit and operating normally, the fan detection and control chip outputs a first type detection signal to the corresponding control unit, and the control unit outputs a first state signal to indicate the fan is operating normally.
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