Apparatus employing a welding power supply for powering a plasma

Details Apparatus employing a welding power supply for powering a plasma Apparatus employing a welding power supply for powering a plasma

1990-03-26

1992-02-04

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912157, 21912139, 2191301, B23K 900

Patent

active

050862057

ABSTRACT:
A boosting circuit is used to boost the voltage output of a DC selding power supply to a higher voltage output adequate for powering a plasma cutting torch. The boosting circuit includes a first inductive stage including an inductor receiving energy from a DC welding power supply. The boosting circuit also includes a capacitive second stage receiving energy from the inductor in the first stage where the two stages together boost the output of the boosting circuit to a voltage output higher than that supplied by the welding power supply.

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"Instructions for Plasma Cutting Package for Heliarc 250HF Power Supply," L-TEC Welding & Cutting Systems, Florence, S.C.
"The Boost Converter," Chapter 3, pp. 51-54, from Modern DC-to-DC Switch Mode Power Converter Circuits, by Severns and Bloom (1985).
Patent Application Ser. No. 204,640, filed Jun. 9, 1988 for "System for Supplying Power," inventor: James M. Thommes.
Divisional Patent Application Ser. No. 443,888, filed 11/30/89 for "System for Supplying Power", inventor: James M. Thommes.

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