Is it possible to calculate L for choke when I measure voltage for
current? Could you give me formula

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Clarification of Question by kzb-ga on 06 Jun 2006 14:10 PDT

Could you give me formula to calculate L when I have two parameters:
voltage and current for EI choke (rectifier)?

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.

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