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| | Components - Part 2 (Site not responding. Last check: 2007-10-09) |
 | | Following this logic, the preferred values for 10% tolerance resistors between 100 and 1,000Ω is a roughly logarithmic sequence of 100, 120, 150, 180, 220, 270, 330 and so on (rounded to the closest sensible value). |
 | | In each series, values may start from as low as 0.1 ohm, and may extend to several megohms, depending on the type of resistor and its intended purpose (and cost, of course). |
 | | In many cases, the preferred current will be too high and will cause excessive heating, but it must be understood that the regulation of the zener is not very good until it is operating at the lower limit of 10% rated power. |
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