
09-08-2011, 07:39 PM
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 | | | Join Date: Jan 2010 Location: USA
Posts: 1,240
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Resistors are generally sold with "standard" values, which are accurate to within a stated tolerance.
2000 ohms (2K ohms) is a standard value for 5% tolerance resistors.
It also happens that 2000 ohms is a standard value for 1% tolerance resistors (which would have a good chance of being even closer to 2000 ohms than any randomly-chosen 5% tolerance resistor, but I wouldn't get too hung up about it).
So, if you can find a 2000 ohm resistor with 1% tolerance it would be great, but if you can only find one with a 5% tolerance it should be OK as well.
Resistors are also rated by the wattage that they can handle. In this application, the resistor will not need to handle a high wattage, so a resistor rated for 1/4 watt should be fine and should also be easy to find in any electronics shop.
(If for some reason you can't find one in the 1/4 watt size, it should be OK to get one anywhere within the range of 1/10 watt to 1/2 watt, but the smaller wattage resistors will be easier to solder to the connectors than the higher wattage ones). |