by tpryan » Tue Aug 30, 2005 8:29 am
The allowed error is expressed as a percentage of the rated value, so the error is meaningless without reference to the part value and tolerance. For example, a 1K 5% resistor should measure anywhere between 950 and 1050 ohms. A 1K 1% resistor should measure between 990 and 1010 ohms. So a 100 ohm resistor that is "off by 50" is really bad, but a 10K resistor that's off by the same amount is really good.