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US 2018/0339356 A1Published application
Ignition device for gtaw welding equipment
AssigneeEsab AB
InventorAndrzej Mnich
Life of this patent
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Abstract
An ignition device for welding equipment includes a capacitor, a transformer, a high voltage output circuit connected to a secondary winding of the transformer, a discharging switch enabling discharge of the capacitor to a primary winding of the transformer, a charger and an operation control circuit that controls the charger and the discharging switch.
Claims18
An ignition device for welding equipment, comprising:
- a capacitor;
- a transformer having a primary winding connected to the capacitor;
- a high voltage output circuit comprising a secondary winding of the transformer;
- a switch that enables the capacitor to be discharged through the primary winding of the transformer;
- a charger comprising a pulse width modulation control circuit configured to control charging of the capacitor;
- and
- an operation control circuit that controls the charger to cause periodical charging of the capacitor and further controls the switch to cause periodical discharging of the capacitor and consequently a high voltage to be present at an output of the high voltage output circuit.
4 more elements
A method of operating an ignition device, the ignition device comprising:
- a capacitor;
- a transformer having a primary winding connected to the capacitor;
- a high voltage output circuit comprising a secondary winding of the transformer;
- a switch that enables the capacitor to be discharged through the primary winding of the transformer;
- and
- a charger comprising a pulse width modulation control circuit configured to control charging of the capacitor,
- the method comprising:
- controlling the charger to cause periodical charging of the capacitor;
- and
- controlling the switch to cause periodical discharging of the capacitor and consequently a high voltage to be present at an output of the high voltage output circuit.
7 more elements
Dependencies are inferred from the claim text.