[ARC5] Bucking Transfomers

J. Forster jfor at quikus.com
Tue Dec 11 10:44:19 EST 2012


The added transformer will behave as a Current Transformer.

Remember, there are TWO equations for the operation of a transformer:

V1 = R*V2
I1 = 1/R*I2

BOTH must be satisfied. because V1*I1 = V2*I2 in an ideal transformer.... 
Conservation of Energy.

In practice, if you leave the primary open, the voltage will be
indeterminately high, set by the turns ratio times the voltage across the
secondary; the secondary voltage will rise until the core saturates just
enough to supply the load current to the radio.

It is never a good idea to open-circuit the secondary of a current
transformer.

SHAMV,

-John

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





> Two questions for y'all.
>
> 1.  What happens if you connect the secondary only of a transformer to the
> primary side of the radio power transformer?  For example, I have a 4 amp
> 6.6 volt secondary military filament transformer (potted meal can type)
> with its secondary insulation rated at 1.07KV.
>
> 2.  If you do as I describe in item 1 above can you then use the primary
> side of the transformer as a power supply for something?
>
> Thanks,
>
> Wayne
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