THREE-LEGGED and TOROIDAL saturable-core reactors solve the problem of load flux aiding
and opposing control flux during alternate half cycles of the a.c. load current.
MAGNETIC AMPLIFIERS use the principle of electromagnetism to amplify signals. They are
power amplifiers with a frequency response normally limited to 100 hertz or below. Magnetic amplifiers
use a saturable-core reactor. A magnetic amplifier uses a RECTIFIER to solve the problem of
HYSTERESIS LOSS in a saturable-core reactor.