_____________________________________________________________________ Special Amplifiers
DIFFERENCE AMPLIFIER - an application of an operational amplifier in
which the output signal is determined by the difference between the input
signals multiplied by the gain of the amplifier:
E OUT = gain (E2 - E1)
SATURABLE-CORE REACTOR - works upon the principle that increasing the
current through a coil decreases the permeability of the core. The decreased
permeability decreases the inductance of the coil that causes an increase in
current (power) through the load.
IDEAL OPERATING POINT - of a saturable-core reactor is on the KNEE OF
THE MAGNETIZATION CURVE. At this point, small changes in control
current will cause large changes in load current (power).
23 June 2005