O'Reilly logo

Electrical Applications 2 by David W. Tyler

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Transformers 71
THE AUTO-
TRANSFORMER
/pA
A A
(a) /Vn turns /Vs turns
A/p
turns<
/pA
1
/Vs J
tumsi
v
1
/sA
(/s-/
p
)A
J
(b)
Figure 5.13
e.h.v.
output
Coolers
Figure 5.11
Input
Figure 5.12
Output
(b)
Line
The auto-transformer has only one winding. Part of this winding is
common to both primary and secondary which are therefore both
electrically and magnetically linked.
Figure 5.12 shows the possible arrangements of coils and core.
The inputs and outputs are reversible providing for voltage increase
or decrease. Considering the transformers to be ideal, i.e. ignoring