Arc welding set with power source and inverter
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United States of America Patent
Stats
-
Aug 22, 2006
Grant Date -
Aug 18, 2005
app pub date -
Feb 7, 2005
filing date -
Feb 12, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A welding machine with a power source and an inverter. The inverter has at least one switching leg, made up of switches in series, and an output terminal. The power source has a circuit for controlling the switches by delivering an on-signal or and off-signal. The power source also has a transformer linked to a rectifier. The power source also has a circuit for detecting the voltage that the terminals of each switch of the inverter. A pilot circuit is also present for receiving control and voltage signals. The pilot circuit then sends a pilot circuit to each of the switches. The pilot signal corresponds to an on-command when the control signal corresponds to an on-signal and when the voltage between the power electrodes is very close to zero.
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