RE: Re: Center tapped transformer

--- In CAD_CAM_EDM_DRO@y..., Jim Brown <jagco1998@y...> wrote:

>
> "if you can split the center tap secondary into two isolated

windings..."

> Would you care to elaborate how one would go about doing so?
> Just incase I get the urge to electrocute myself trying to one day!
>
> Regards,
> Jim
> [Non-text portions of this message have been removed]

Many transformers bring all of the coil wires outside.
sometimes all the wires go to a terminal block and that is where the
centre tap would be. these are generally easy to split

in other cases the coil wires are soldered to pigtail leads
externally and you should be able to feel the centre tap junction
with your fingers. these may be easy to split if the wiures arent too
short.

but occaisionally the centretap is done under the insulation wrapping
of the entire coil assembly. you can often locate the area where the
junction is with your fingers. it is possible to remove the outer
layer of paper or cloth insulation to access the junctions of the
coil wires and the pigtail leads. if you do this tread carefully as
the wires from the outsides of the coils are easy to work with but
the wires that go deep inside the coil may be quite short and thus
wont give you much wire to play with. use proper insulating paper or
card ( from a motor rewinding shop) to recover the outside of the
transformer windings. dont use pvc tape inside the transformer, use
proper insulating spaghetti (from the rewinders)to cover all reworked
joins.

before you use a reworked transformer test that none of the wires has
shorted to the frame or to each other. always use a proper earth
connection to the mains power supply

its not a difficult process and is safe if you take care. but in all
events its probably prudent to have it tested by a qualified
electrician.

Regards
Bob Thomas