Re: gdt

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Eastern Voltage Research Corporation" <dhmccauley-at-easternvoltageresearch-dot-com> 

For my 1:2:2 transformers, I do it the following way:

For example, if I want a 10:20:20 turn GDT, i simply wind three strands of
20 turns and then cut the primary in half and then parallel both
10 turn primaries.  I can maintain a measure coupling of greather than 0.99
when I do this.

Just one thing.  Once I have 10 turns on the core, i'll pull some slack on
the primary winding and twisted maybe 4 inches of that piece outward.  Then
I continue
winding the additional 10 turns.  It also helps to put tape on the primary
to make paralleling easy.  Once you wind it, it may be difficult to
determine which end is which
when you start paralleling.

Dan


 > Hello,
 > Could someone tell me the best way to wind a GDT with a turns ratio of
 > 1:2:2
 > and still maintain good coupling between primary and secondary. Also,
 > what
 > seems to be a good number of turns.
 >
 > Thanks
 > Claude.
 >
 >
 >
 >
 >