High temperature magnetic amplifiers
View Patent ↗A high temperature magnetic amplifier, which utilizes the nonlinear properties of square loop magnetic cores to achieve very large amounts of both voltage and power amplification. By combining square loop, grain-oriented magnetic materials with high temperatures along with high temperature packaging approaches, high temperature long lifetime components can be produced. The high temperature magnetic amplifier is used as a building block to develop high temperature versions of operational amplifiers, comparators, voltage regulators, timers, counters, modulators, motor starters, servo systems, converters, inverters, power switches and many other devices.
1. A saturable core magnetic amplifier circuit comprising:
an input signal;
a first control winding in series with a second control winding, a series resistor, and the input signal;
the first control winding wound around a first core;
the second control winding wound around the second core;
a first load winding wound around the first core;
a first bridge rectifier electrically connected to the first load winding;
a second load winding wound around the second core;
a second bridge rectifier electrically connected to the second load winding;
a first feedback winding wound around the first core, the first feedback winding electrically connected to the first bridge rectifier;
a second feedback winding wound around the second core, the second feedback winding electrically connected to the first bridge rectifier;
a feedback resistor connected between the first feedback winding and the second feedback winding;
a first bias winding wound around the first core, the first bias winding connected to a second bridge rectifier;
a second bias winding wound around the second core, the second bias winding connected to the second bridge rectifier; and
a third bridge rectifier connected to the second load winding, the second control winding.