Welding power supply with laminated bus
First Claim
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1. A bus for a welding type power supply, comprising:
- a first conductive plate having a first surface;
an insulator plate, having a first insulator surface disposed in an abutting relationship with the first bus surface, and further having a second surface;
and a second conductive plate having a second bus surface disposed in an abutting relationship with the second insulator surface; and
wherein the first conductive plate has a first conductive thickness extending perpendicular to the first surface, and the first surface has a first conductive surface area, wherein the ratio of the first conductive surface area in square inches to the first conductive thickness in inches is at least 200;
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Abstract
A method and apparatus for welding with a bus is disclosed. The bus preferably is laminated, with two conductive plates separated by an insulator plate. The bus preferably is disposed in a housing without airflow.
6 Citations
28 Claims
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1. A bus for a welding type power supply, comprising:
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a first conductive plate having a first surface; an insulator plate, having a first insulator surface disposed in an abutting relationship with the first bus surface, and further having a second surface; and a second conductive plate having a second bus surface disposed in an abutting relationship with the second insulator surface; and wherein the first conductive plate has a first conductive thickness extending perpendicular to the first surface, and the first surface has a first conductive surface area, wherein the ratio of the first conductive surface area in square inches to the first conductive thickness in inches is at least 200;
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A welding-type power supply, comprising:
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an input circuit for receiving input power; a bus, connected to the input circuit and across at least one capacitor, wherein the bus is comprised of a first conductive plate having a first surface, an insulator plate, having a first insulator surface disposed in an abutting relationship with the first bus surface, and further having a second surface, and a second conductive plate having a second bus surface disposed in an abutting relationship with the second insulator surface, wherein the first conductive plate has a first conductive thickness extending perpendicular to the first surface, and the first surface has a first conductive surface area, wherein the ratio of the first conductive surface area in square inches to the first conductive thickness in inches is at least 200;
1;a switched circuit, connected to the bus; and an output circuit connected to the switched circuit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A welding-type power supply, comprising:
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an input circuit, including a rectifier, for receiving input power; a bus, including two conductive layers separated by an insulating layer, connected to the input circuit and across at least one capacitor, wherein the bus is disposed in a housing having no forced fluid flow therethrough, and the at least one capacitor is disposed outside the housing; a switched circuit, including at least one switch is disposed in the housing, connected to the bus, and wherein the switch is thermally connected to a heat sink outside the housing; and an output circuit connected to the switched circuit.
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20. A welding-type power supply, comprising:
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input means for receiving input power; a bus, connected to the input means and across at least one capacitor, wherein the bus is comprised of a first conductive plate having a first surface, an insulator plate, having a first insulator surface disposed in an abutting relationship with the first bus surface, and further having a second surface, and a second conductive plate having a second bus surface disposed in an abutting relationship with the second insulator surface, wherein the first conductive plate has a first conductive thickness extending perpendicular to the first surface, and the first surface has a first conductive surface area, wherein the ratio of the first conductive surface area in square inches to the first conductive thickness in inches is at least 200;
1;switching means for switching across the bus; and output means for receiving power from the switching means and providing output power. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A welding-type power supply, comprising:
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input means for rectifying input power; bus means, including two conductive layers separated by an insulating layer, connected to the input means and across at least one capacitor, for maintaining a voltage across the capacitor; housing means for housing the bus means and for preventing forced fluid flow across the bus means, wherein the at least one capacitor is disposed outside the housing means; switch means for switching power from the bus means, wherein the switch means is disposed in the housing means and connected to the bus means, and wherein the switch means is thermally connected to a heat sink outside the housing means; and output means for receiving power from the switch means and providing output power.
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Specification