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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-repai r-articles.htm

In The News:

Kim Jong Un vows no more nuclear or missile tests
Fri, 20 Apr 2018 23:12:00 +0100
North Korean leader Kim Jong Un says Pyongyang has suspended its nuclear and long-range missile tests, and will shut down its atomic test site.

Grave mistake to think Kim is backing down
Sat, 21 Apr 2018 07:01:00 +0100
Against a backdrop of 2017's escalating tensions and threats of attack, North Korea's announcement that it is suspending all nuclear and missile tests seems a dramatic change of course.

Avicii to Max Martin: How Sweden dominates pop music
Sat, 21 Apr 2018 12:10:00 +0100
You probably didn't know it, but when you're humming to old classics by Britney or new music from Nicki Minaj or Katy Perry, a lot of the time you're actually enjoying the musical composition of talented Swedes.

India bids to bring in death penalty for child rapists
Sat, 21 Apr 2018 11:53:00 +0100
India is set to introduce the death penalty for anyone found guilty of raping girls under the age of 12.

Portman defends awards ceremony decision
Fri, 20 Apr 2018 21:53:00 +0100
Actor Natalie Portman has defended her decision not to attend a Jewish awards ceremony, saying she can be critical of Israel's leadership without boycotting the whole country.



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