[Boatanchors] Measuring Swinging Choke values

Mark K3MSB mark.k3msb at gmail.com
Wed Jul 21 22:57:47 EDT 2010


On the swingers I have,  all measure good for DC resistance;  no shorts to
ground etc.

73 Mark K3MSB

On Wed, Jul 21, 2010 at 10:26 PM, J. Forster <jfor at quik.com> wrote:

> Are you sure the choke is good?
>
> -John
>
> ============
>
>
> > I’m using a 6 H smoothing choke as my reference.   When I use a 12 H
> > smoothing choke for the “test choke”,  the IT-28 gives me a pretty
> > accurate
> > reading.
> >
> >
> >
> > One swinging choke I have is a Collins Swinging Filter Reactor,  12H to
> 4H
> > @
> > 0.3A
> >
> >  The measured DC resistance is 65 ohms.
> >
> >
> >
> > With the IT-28 set to a low bridge voltage (3V),  the current through the
> > choke will be about 46 mA;   I would expect the inductance to be near 12H
> > for that current.
> >
> >
> > 73 Mark K3MSB
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