Patent ID: 11923788
Assignee: ILLINOIS TOOL WORKS INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A welding or cutting circuit, comprising:
an input leg comprising a capacitor coupled between a high bus and a low bus;
a buck converter coupled in parallel with the input leg, wherein the buck converter comprises a first transistor, a second transistor, and an output electrically coupled to a node between the first transistor and the second transistor, and wherein the buck converter is configured to convert input voltage to current in an inductor coupled to the output of the buck converter; and
a steering leg coupled in parallel with the input leg,
wherein the steering leg is configured to control a rate at which the current in the inductor decreases, and
wherein a current detector is positioned at the output to monitor the current, the current detector providing current level indications to a hysteretic controller, the hysteretic controller providing signals to the first transistor and the second transistor that control the first transistor and the second transistor to control the voltage applied to the inductor, the first transistor and the second transistor being controlled to be in opposing ones of an on state and an off state.