Method and Apparatus for Providing Auxiliary and Welding Type Power With Thermal Protection

摘要

A method and apparatus for providing welding-type power supply includes a power circuit and a controller. The power circuit receives input power and provides welding type power and auxiliary power. It is controlled on a control input. The power circuit also includes an auxiliary power transformer. A temperature responsive component is mounted in the auxiliary power transformer and provides a temperature signal indicative of the temperature in the auxiliary power transformer. The controller controls a cooling fan for the aux power transformer and/or turns off the aux power output in response to the sensed temperature.

主权项

1. A welding-type power supply comprising:
a power circuit disposed to receive input power and provide welding type power and auxiliary power, and having a control input, wherein the power circuit includes an auxiliary power transformer; a temperature responsive component mounted in the auxiliary power transformer, that provides a temperature signal indicative of the temperature in the auxiliary power transformer; and a controller, having a control output connected control to the control input, and having a temperature control input connected to receive the temperature signal, and having a thermal protection module that receives the temperature control input, and wherein the control output is responsive to the thermal protection module.