capacitance calculator
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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113478
Printed Date: May 06, 2024 at 3:30 AM
Topic: capacitance calculator
Posted By: jeffchilcott
Subject: capacitance calculator
Date Posted: April 28, 2009 at 11:11 PM
can anyone help me out here, I used to have some equations. Cant seem to find them, trying to see if something is plausible
Trying to solve farads of capacitance (c)it would take to support (x)Amps at (y) voltage for (t) time
So
Farads = 900Amps 14volts for 3 seconds
thanks for any help
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Replies:
Posted By: haemphyst
Date Posted: April 29, 2009 at 12:07 AM
IIRC from all those years of electrical training in the Navy... (This is a formula I don't often use...)
Amps times Volts times Time = Joules or watt-seconds
900 X 14 X 3 = 37.8kJ
Joules / Volts = Farads
37800 / 14.4 = 2625F
So... 900A at 14.4V for 3 seconds would require 2.6kF!
Pretty sure that's the way it works... If I'm wrong, i am an idiot will be along shortly to give you the correct information... :)
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: DYohn
Date Posted: April 29, 2009 at 11:02 AM
That sounds about right. ------------- Support the12volt.com
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