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  • Fan Design
    The following discussion describes the basic considerations in efficient axial flow fan design and illustrates features that will assist the reader in recognizing well-designed units. One of the most important requirements of a fan wheel is that is must impart to the air stream a uniform velocity
  • Redundant Fan Systems Using the TC647 Fan Manager
    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 more standby fans that automatically are placed in service should
  • Intelligent Fan Control
    This application note describes the creation of an intelligent 4-wire fan.
  • What is a DC Axial Fan?
    An axial fan in general, whether DC axial fans or otherwise, is the most commonly used variety of cooling fan, as well as the most cost effective. Also called 'box fan' on occasion, they move air on a straight axis through the fan. This kind of fan functions best under a low pressure or low system
  • Understanding Fan Performance Curves
    One of the most important documents customers request from fan manufacturers is performance curves. In addition to graphically depicting the basic fan performance data of CFM, RPM, and SP (on the static pressue curve) and BHP (on the brake horsepower curve), these curves also illustrate
  • Simple Fan Control Solution
    Ambient Temperature-Controlled Fan On/Off Switch - the TC620 logic output temperature sensor can work as a local thermostat, turning the cooling fan on and off when the ambient temperature levels exceeded threshold values. The programmable temperature threshold and hysteresis values make it easy
  • An Introduction to Fan Acoustics
    Fan Acoustics is an important consideration in the industrial environment and with commercial ventilation systems. The sound generated by some fans can be a potential hazard to. personnel in close proximity to the fan, and the sound can be transmitted, via the ductwork connected to the fan, to all
  • Fan Laws and System Curves
    The purpose of this Engineering Letter is to explain the basis and application of the rules used to predict fan performance in a given system. With a basic understanding of these rules, the performance of a fan can be quickly calculated for various conditions.

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