Boot Camp Posted June 7, 2008 Share Posted June 7, 2008 *^T/O/P/IC^* Link to comment Share on other sites More sharing options...
guilliamo Posted June 7, 2008 Share Posted June 7, 2008 The +/- 10% is a way of indicating the expected variation in a given parameter. In this case a a fan drawing a "nominal" 1.8 Watts is specified as drawing no more than 1.98 Watts (1.8W + 10%) and no less than 1.62 Watts (1.8W - 10%). When I was in college (many years ago), and virtually everything electrical was analog, it was said that we live in a "10% world" where most electrical parameters can (will) vary by 10% or so UNLESS great effort and expense is exercised to reduce variation AND then measure that variation with more precision. G Link to comment Share on other sites More sharing options...
vbetts Posted June 7, 2008 Share Posted June 7, 2008 Tolerance. + or - 10% of the value of the resistor. Link to comment Share on other sites More sharing options...
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