High frequency inverter circuit for melting and induction heating
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United States of America Patent
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-
Jan 20, 1987
Grant Date -
N/A
app pub date -
Jul 23, 1984
filing date -
Jul 23, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two-pole inverter bridge has an inductor mounted between the two controlled switches in each pole and a resonant load is connected across the poles between ends of the inductors which are similarly situated relative to the terminals. In each pole one antiparallel circuit includes an auxiliary controlled switch and another antiparallel circuit includes only a diode. Fault protection is provided with an auxiliary source mounted between opposite ends of the inductors for applying reverse bias to the controlled switches of the poles whenever a fault in the inverter is detected.
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