BASIC OPERATION OF A MAGNETIC AMPLIFIER-Cont.
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MAGNETIC AMPLIFIERS - 14180_131
METHODS OF CHANGING INDUCTANCE
Neets Module 08-Introduction to Amplifiers
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3-44
What happens when the inductance decreases? The end result is that the power in the load (true
power)
increases
. Why? Look at the following formulas and see how each is affected by a decrease in
inductance.
(True power is covered in
NEETS, Module 2—Introduction to
Alternating Current
and
Transformers
.)
As
inductance
(L) decreases, X
_{L}
decreases. As X
_{L}
decreases, Z decreases. As Z decreases, I
increases. Finally, as I increases, true power increases.
This general conclusion can be confirmed by using some actual values of
inductance
in the formulas
along with other values from figure 3-29.
If the value of inductance is 23 millihenries, the formulas yield the following values:
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