Electric heating – Microwave heating – Tunnel furnace
Patent
1975-07-03
1976-07-27
Mayewsky, Volodymyr Y.
Electric heating
Microwave heating
Tunnel furnace
13 24, 219406, 219413, 219494, 219530, H05B 102
Patent
active
039718760
ABSTRACT:
The disclosed invention describes an apparatus and method for bringing a system having high interactive portions to a predetermined temperature distribution. The invention includes a difference controller which provides, through two separate drivers, a fixed total amount of energy to the system being controlled. If the system being controlled also has a long cycle time, second and third temperature controllers may be used to bring the system to the equilibrium temperature with a minimum amount of overshoot. The invention is particularly advantageous when used in connection with a high pressure, high temperature vessel useful in growing quartz crystals.
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Bowles Arnold G.
Witkin Donald E.
Mayewsky Volodymyr Y.
National Forge Company
Smith Charles B.
Walpert Gary A.
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