[Boatanchors] question about chokes

[J. Forster]

A swinging cholke helps with voltage regulation.

At low DC current, the choke has high inductance, hence a big AC voltage
drop. As the DC current component increases, the choke saturates, hence
the inductance goes down, so the drop is less.

If you short out the choke, this will happen:

The output voltage will go up and have more ripple under load.
The voltage regulation performance will get worse.

-John

================




>                      Have a 751 Eico supply that the Hi voltage choke
> ,went open somewhere inside. The choke is a swinging
> 2-12 henry type. I doubt I can ever find another one
> at a price that anyone would invest in this old
> supply. I realize the choke is a big filter item,but
> If I removed the choke from the circuit, Would I
> really know the difference? Most supplies like this
> one ,such as the drake and most of the heath supplies
> don't have a choke and are very similar to this one .
> Any Ideas in good or bad to operate with out the
> choke?
> 73
> dale wt4t
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