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May 13th, 2015, 06:53 AM   #1
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finding unknown value in equality

Hi. someone may explain me how to find Lr value in the equality is it possible ?>>see image
without knowing " Lr " cant even find 55sqrt2, so seems like a 2unknown system is needed , but i cant figure how to.the other quantity are well known.any help appreciated.Tvm Henry. last line says from this equation Lr = 2.25mH, yes but how to find it?
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Last edited by e21959; May 13th, 2015 at 07:38 AM.
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May 13th, 2015, 07:04 AM   #2
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"You must return when the moon has friends and the fox is borrowed." ???????
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May 13th, 2015, 08:17 AM   #3
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. hi am i trying to find something is not possible to find or am i blind ? is your a riddle?tvm
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May 13th, 2015, 08:44 AM   #4
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That was what I was getting when clicking on your link.
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May 15th, 2015, 06:03 PM   #5
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finding unknow value

Hi. Denis i wrote this because that day i posted here was totally screwed up
That value 55Volts of the lamp you see in the equation was specified in lamp specification parameters, so was a well known value,in the equation then it was multiplied by sqrt2 to get lamp_peak voltage (55 Volt is RMS voltage), and knowing that now it is really easy find Lr value.Tvm for all . Henry
Solved!
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May 15th, 2015, 07:01 PM   #6
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Math Focus: Wibbly wobbly timey-wimey stuff.
What's with the "Do not distribute" stuff?

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May 16th, 2015, 05:16 PM   #7
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