TC 9-62
Figure 7-34. Toroidal Saturable-core Reactor
SIMPLIFIED MAGNETIC AMPLIFIER CIRCUITRY
7-124. Even though the saturable-core reactor works, we need to add a rectifier to produce
a magnetic amplifier because of hysteresis loss. Hysteresis loss occurs because the AC
applied to a coil causes the tiny molecular magnets (or electron-spin directions) to realign
as the polarity of the AC changes. This realignment uses up power. The power that is used
for realignment is a loss as far as the rest of the circuit is concerned. The power gain is
relatively low because of this hysteresis loss in the saturable-core reactor. A rectifier added
to the load circuit will eliminate the hysteresis loss and increase the gain. This is because
the rectifier allows current to flow in only one direction through the load coils.
7-44
TC 9-62
23 June 2005
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