DownLoad FAQ

Search：   Dictionary      General    (keywords) FAQ Ampere or Amp Reply：Unit of measure of current flow. At a given point in a circuit, an Amp (1A) equals 1 coulomb of electrons passing in 1 second. Back plane Reply：A circuit board that can combine two or more redundant power module Ball-bearing Fan Reply：A cooling fan with a center hub that glides on precision steel balls. Though more expensive, ball bearing fans typically last longer than fans made with bushings. Breakdown Voltage Reply：The maximum AC or DC voltage that may be applied from input to output and/or chassis of a power supply. Circuit Reply：A complete path for electrical flow from one terminal to the other of a power source such as a power supply or battery. Converter Reply：A device used to transform one DC voltage to another. Efficiency Reply：The ratio of total power output to input power. Efficiency is typically measured at full load and nominal input voltage. Electromagnetic Interference (EMI) Reply：An effect of undesirable energy. EMI is typically emitted by switching power supplies, and may be conducted or radiated. European Communities (CE) Reply：Products sold in most parts of Europe must be tested and certified to comply with CE standards. These standards include limits on how much electromagnetic interference (EMI) a device may emit, and its susceptibility to EMI induced problems. Hold-up Time Reply：The period during which a power supply's output voltage remains within specifications following a loss of input power. Hot-swap Reply：To remove and replace a system component while power is on and the system is functional (without first shutting the system down). Inrush current Reply：The peak instantaneous input current drawn by a power supply when it is powered on. ISO Reply：International Standardization Organization Mean Time Between Failure (MTBF) Reply：The average failure rate of power supply, expressed in hours, established by the actual operation or calculation. Output Voltage Reply：The nominal value of the DC voltage at the output terminals of a power supply   ( 1 )   2