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keith_moc@yahoo.com
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Join Date: Jan 2008
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Answer to formula (1-r1/r2) Explained

01/19/2008 3:06 AM

OHM's Law can be used for calculating the current through the LED for a range of resistance values.R1=100 Ohms.LED current=.043vThe formula for current is I=V/R.An LED doesn't begin to conduct untill forward voltage is 1.7 volts(red LED).Therefore the formula for current is I=(6v-1.7v)/R or risistance.Which Can be found In Radio Shacks book,"Electronic Formulas, Symbols and Circuits".Thank You,

By D.w.Howerton

Scientist/Electrician/Electronics Teck.
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Electroman
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#1

Re: Answer to formula (1-r1/r2) Explained

01/19/2008 9:06 AM

Hmmmm a simplified version, but who are you answering? Or are you expecting a debate?

John.

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Vulcan
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#2
In reply to #1

Re: Answer to formula (1-r1/r2) Explained

01/20/2008 4:44 AM

I think his title is referring to this thread:

http://cr4.globalspec.com/thread/16556#newcomments

However, the rest of his post seems to answering some other thread or post. Even though, it doesn't make sense. Too bad there's no bad answer score .

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nesubra
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#3

Re: Answer to formula (1-r1/r2) Explained

01/20/2008 7:57 AM

any how thanks for the information though i am not able to relate to a particular post/thread

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JohnDG
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#4

Re: Answer to formula (1-r1/r2) Explained

01/20/2008 12:18 PM

Is that D.W. Howerton, the renowned facial reconstructive surgeon?

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Sparkstation
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#5
In reply to #4

Re: Answer to formula (1-r1/r2) Explained

01/20/2008 3:49 PM

No, JohnDG

Refer: <"By D.w.Howerton

Scientist/Electrician/Electronics Teck.">

I'm unsure why the second name has a small 'w', it may be something like the 'd' in French, or the 'van' in Dutch.

Teck is a word with multiple meanings, from a Chinese surname, City in Germany etc.

Google Search terms: teck meaning (Unbolded, of course) should give you varied examples, if you wanted to know more.

Kind Regards....

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