winding your own transformer

From:  D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent:  Wednesday, January 28, 1998 12:11 PM
To:  Tesla List
Subject:  Re: winding your own transformer

to: Travis

Usually there are two physically separate identical coils so the center tap
point is the ground connection or lower side (innermost physically) of each
coil.  The outermost or end of the winding is the highest point on the
coil.  Each coil is also wound in a different direction CW vs CCW so that
one is plus (peak) while the other is minus (peak).  Most larger (12 kV and
15 kV) NST's use this type of construction.


> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: winding your own transformer
> Date: Tuesday, January 27, 1998 3:58 PM
> ----------
> From:  Tabbal [SMTP:bigboss-at-inquo-dot-net]
> Sent:  Tuesday, January 27, 1998 3:02 AM
> To:  Tesla List
> Subject:  Re: winding your own transformer
> On Tue, 27 Jan 1998, Tesla List wrote:
> > The reason for center-tapping a transformer is simple:  Let's assume
> > have an X-ray tube (or neon sign) that requires 20 kiloVolts to operate
> > effectively.  You could build a xmfr and insulate the secondary winding
> Thanks... is the other winding just the other side of the tap? It seems
> like you're saying that when there is a tap it creates two windings on
> same transformer. So to accomplish this I would end up with a winding of
> turns with a tap soldered in at X/2 turns? 
> Interesting idea, makes sense though. Do I have the right of it now?
> Thanks for your help. :)
> Travis