

Subject:
calculating L
Category: Science > Physics Asked by: kzbga List Price: $3.00 
Posted:
06 Jun 2006 13:59 PDT
Expires: 06 Jul 2006 13:59 PDT Question ID: 735859 

There is no answer at this time. 

Subject:
Re: calculating L
From: epidavrosga on 06 Jun 2006 16:29 PDT 
No, you cannot calculate the inductance of a choke simply from a measurement of voltage and current. This will give you the choke's DC resistance (R = V/I), but you are interested in its AC response which is given by L. 
Subject:
Re: calculating L
From: ciphermanga on 11 Jun 2006 03:55 PDT 
here is a formule; V=L*(dI/dt) As you see current is changing depending on the varying. If you compare the initial state to the final state.Initially current is zero;after a while there appaers a maximum current in the choke;by the way on the ends of the choke the potential is going to be measured as an maximum value too.This potential can be calculated as; V(max)=L*I(max) You can also calculate the potential that will be appeared on the choke any time by using the expression below,if you know the value of current at a certain time. V(t)=L*I(t) V(t) is the voltage appears on the choke at the time=t I(t) is the amount of current passing through the choke at the time=t 
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