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18:57 Feb 12, 2009
English to Japanese translations [PRO] Tech/Engineering - Electronics / Elect Eng Additional field(s): Energy / Power Generation, Engineering (general)
English term or phrase:derating
Definition from Martek Power Abbott, Inc.: Reducing one operating parameter to compensate for changes in other parameters to maintain reliability. For example, the reduction in output power at elevated temperatures.
Two things can be inferred from these ratings: the maximum storage temperature is equal to the derated temperature. Also, the slope of the derating can be used to calculate an equivalent thermal resistance in degrees C per watt. The difference between the no-load and maximum full load temperature is less than or equal to the temperature rise at full load. P-N Designs, Inc.
Most dc/c manufacturers have design-derating guidelines, but sometimes designers use guidelines they have developed themselves. As engineers, we derate components to improve their reliability by decreasing component stress. Hearst Business Communications, Inc
A derating chart is often used, with derating starting at 70oC. Since parameters are application dependent, power de-rating curves or charts should be considered general rather than absolute, and only used as a guideline. interfacebus.com
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