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Five Band Resistor Color Code-What Does The Last Band Of White Color Represent?

In electronic repair, most of the time i came across five band resistor color code. The purpose of using the five colour band resistor in a circuit is that it provide a more accurate value compare to the four color band. For example in order to get the value of 22.6kohm, with four colors band resistor you will not be able to find it. The most you can get is 22k (red,red,orange and gold). If with the five color band you will be able to calculate it (red, red, blue, red, brown)the last color which is brown represent 1% tolerance. You may go to google search engine and type resistor color code, resistor color coding, resistor color code calculator, or resistor color code chart to know more about how to calculate a five band resistor values.

If you open up an analog multimeter you will understand what i mean. Most of the resistor circuit inside the multimeter are using five color band. Why? Because the reading that you get whenever you measure current, voltage or ohm, the panel will show the nearest value. For instance, if you measure a 9v battery the needle will point to may be 8.9v,9v,or 9.1 volt. If that particular multimeter was designed using four color band resistor the result that it gets may be 8.5v,9.5v or even 10 volt. In other words the use of five color band resistor is to make a circuit more precise and output the desire result as what the engineers want it to be.

There's a interesting five color band resistor which is unique. In fact i have already seen quite a number of them. I will reveal the calculation about this unique five color band resistor. The colors are orange, orange, red, gold, white. Actually it is a four color band resistor. Just ignore the white color and proceed to calculate using the four color band formula. As to why the resistor manufacturers add this 'extra' white band i really do not know. However, from forum someone said that it is for the military purposes. If you know the answer i would like you to email me so that i can share with other fellow electronic repairer thru this info repairing newsletter.

Jestine Yong is a electronic repairer and a writer. For more information on electronic repair please visit his website at http://www.noahtec.com/electronic-repair-articles.htm

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Yahoo! News Search Results for hardware
Yahoo! News Search Results for hardware

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Quiz to assess learners? hardware knowledge, created in Word 2007; it may work in other versions but not on Macs. Macros must be enabled for the program to automatically mark the answers & print the learner's first attempt. Please leave feedback. If you have any problems send a message via TES site.
• Hardware stores hit by falling business
THE STATE (COLUMBIA, S.C.) COLUMBIA, S.C. - For three years, Terry Reynolds has watched sales dwindle at his West Columbia, S.C., ACE Hardware store. And he has mourned as other South Carolina hardware stores have chained their doors for the last time - including three that are closing in the next few weeks in Richland and Lexington, S.C. "We get tired of fighting and trying to survive," Mr ...
• Hardware Roundup: Weekend Edition
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Tripping the light fantastic Security researchers using hardware hacking techniques have unearthed generic flaws in supposedly ultra-secure quantum cryptography systems.?
• Graafschap Hardware store celebrates 150th anniversary
Store opened by A. H. Brink still stands, but a newer hardware center built in 1956 is across the street.

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