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Analog Electronics
book

Analog Electronics

by Ian Hickman
October 2013
Intermediate to advanced content levelIntermediate to advanced
342 pages
16h 43m
English
Newnes
Content preview from Analog Electronics
Passive components 21
£B = -L állát = άΦΙώ, and all of the flux Φ
links both windings, it follows that the ratio of
secondary voltage E, to the primary back EMF
Ep B
is equal to the turns ratio:
E, _ /Vs
(1.7)
If a resistive load R is now connected to the
secondary, a current EJR will flow, since Es
appears to the load like a source of EMF. By
itself,
this current would produce a large flux in the core.
However, the flux cannot change, since the resul-
tant primary back EMF
Ep «
must balance the fixed
applied EMF
E
(see Figure 1.10b and c). Conse-
quently an additional current /p flows in the
primary to provide an MMF which cancels out th ...
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Publisher Resources

ISBN: 9781483162287