Patent ID: 6603213
Filing Date: 2003-08-05
Classification: B23K,H02P

Abstract:
An engine/generator driven welding power supply for providing a welding output comprising:an engine; a generator, mechanically linked to the engine, and having a generator output; a welding power supply having an input connected to the generator output, and having a welding output, and providing welding power on the welding output; a controller having an RPM input connected to receive an RPM signal indicative of the engine RPM, and further having a user selected magnitude input, and wherein the controller includes an output reduction circuit having as an input the RPM signal, wherein the output reduction circuit, in response to the engine RPM, limits the output to less than the user selected magnitude and increases the output so that it reaches the user selected magnitude as the engine RPM increases, so as to reduce the likelihood of a stall, but maintain sufficient power for a welding arc.