[Boatanchors] Question about inductance...

J. Forster jfor at quikus.com
Sat Dec 3 23:00:39 EST 2011

The inductance will be at least same at 0.25 A as at 1.3 amps, probably
higher. Certainly not lower.

If you measure the inductance at 0 and plot it, and the value at 1.3 Amps,
v. Current and then read the inductance off the plot for 0.l25 Amps,
you'll be pretty close.



> Hello All,
> I have a question regarding the measurement of inductance vs. current.  I
> have a pair of chokes rated at 0.15H @ 1.3A and would like to know if it
> is worth investigating their inductance at currents on the order of 0.250A
> so I can use them in a power supply.  DC resistance is about 3.5 ohms, so
> I wouldn't be losing much voltage at all.  Max voltage would be under
> 600V, so not too high.
> Details regarding the markings on the chokes:  part number is 'SB16355',
> rating '0.15H1.3A', 'serial 14', what I think is a date code '7:64'.
> I happened to find a website
> (http://www.qsl.net/kh6grt/page4/516powersupply/516powersupply.htm) had a
> link to a circuit
> (www.reed-electronics.com/ednmag/archives/1995/070695/14di4.htm) but that
> link leads to a dead end.
> If anyone has any suggestions, I would be grateful.  Of course if anyone
> sees potential danger here, feel free to raise the alarm.
> Happy Holidays and Best Regards,
> William
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