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    AN-779

    Abstract: AN77
    Text: AN768 Redundant Fan Systems Using the TC642 Fan Manager INTRODUCTION Certain applications, such as file servers, require redundant cooling fans to ensure uninterrupted system service, even with cooling fan malfunctions present. Typically, such systems have a primary fan to cool the system, and one or


    Original     		AN768 TC642 TC642s red200 DS00768A* DS00768A-page AN-779 AN77 PDF

    2N2222A Data Sheet

    Abstract: 2N2222A AN-53 TC642 BDC 47
    Text: REDUNDANT FAN SYSTEMS USING THE TC642 FAN MANAGER APPLICATION NOTE 53 REDUNDANT FAN SYSTEMS USING THE TC642 FAN MANAGER AN-53 By Don Alfano and Danny Allred INTRODUCTION action turns Q2 OFF, activating Unit 2. Unit 2 responds to VIN as long as there is no fan fault present. Diodes D1 and


    Original     		TC642 AN-53 TC642s 2V/100mA 2N2222A TC642 2N2222A Data Sheet 2N2222A AN-53 BDC 47 PDF