Claims
- 1. An arc welding power supply comprising:a step-up cycloconverter having a primary side and a secondary side, and at least one control input on the secondary side; a feedback circuit that provides a signal indicative of the output voltage; and a controller coupled to the control input and the feedback circuit, wherein the controller controls the output of the cycloconverter in response to the output voltage to provide a constant voltage output.
- 2. The welding power supply of claim 1, further including a current feedback circuit that provides a signal indicative of the output current; and wherein the controller is further coupled to the current feedback circuit, and further wherein the controller controls the output of the cycloconverter in response to a user selectable one of output current and output voltage.
Parent Case Info
This is a continuation of application Ser. No. 08/872,845 filed on Jun. 11, 1997 now U.S Pat. No. 6,114,655.
US Referenced Citations (22)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2039167 |
Jul 1980 |
GB |
2039166 |
Jul 1980 |
GB |
2039168 |
Jul 1980 |
GB |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/872845 |
Jun 1997 |
US |
Child |
09/488325 |
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US |