Plasma torch electronic pulsing circuit
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United States of America Patent
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-
Dec 8, 1992
Issued Date -
N/A
app pub date -
Sep 18, 1991
filing date -
Apr 8, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A plasma arc torch having new electronic circuit concepts wherein main current regulated power means regulates the pilot current prior to main arc transfer. Further, the circuit may contain two inductors to which DC current initially flows but is interrupted upon main arc transfer such that one inductor maintains the pilot arc while the current in the second inductor forces the establishment of the transferred arc. Also, advantages are presented in pulsing the cutting arc as well as pulsing the pilot arc.
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