[AMRadio] Transformer help

[Gary Schafer]

Yes I understand about critical inductance. A minimum load needs to be
maintained depending on the inductance value of the swinging choke.

I have read what I could find in the handbooks on the subject. What seems to be
missing is the information on dynamic regulation.

73
Gary  K4FMX


Tommye & Jim Wilhite wrote:

> Gary:
>
> Rather than go into a long dissertation about optimum inductance, if you
> have a reference that covers that subject, check it.  An old handbook is a
> good source and explains it in pretty good detail.  The thing you are
> looking for is regulation.
>
> If the choke changes with load, you cannot, in normal power supplies, attain
> the regulation you desire.  With  calculation, you may be able to do so with
> larger cap values as suggested.  All this, keeping in mind, that reasonance
> plays a part.
>
> 73  Jim
> de W5JPW
>
> > That Is what I remember from long ago but now I am wondering if it would
> work ok
> > with a large filter cap like around 25 mf.  In the days when swinging
> chokes
> > were used a lot large values of capacitance were hard to come by.  I would
> not
> > be depending on the choke for any filtering, only voltage regulation.
> > Any thoughts ??
>
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