| 摘要 |
PURPOSE:To permit regulation of the conditions of welding output freely at the operator's hand without carrying a remote controller attached with a cable according to the movement of a welding place by providing a circuit for supplying voltage when no load is applied and a control circuit for the number of times of short circuiting between an electrode and objects to be welded to a power source device for welding. CONSTITUTION:An auxiliary circuit including a detector 19 is connected to a power source circuit for welding via a current control element 14, diodes 15, 16, normally closed contacts 17 of a voltage detecting relay, and normally closed contacts 18 of a relay for detecting feeding of a wire. A waveform shaping circuit 20 which shapes the waveforms of the electric signal drawn out with the detector 19, a zero pulse excluding circuit 21 which removes the pulse signal by an initial time of contact short circuiting and a control circuit 22 which measures the number of times of the contact short circuiting by the signal from the circuit 21 are provided. A required regulator is selected among the plural regulators for setting of conditions of welding output with the controller 22 is selected by an output selecting circuit 26, whereby the conditions of welding output are regulated easily at the operator's hand. |
