This series inversion DC resistance spot welding power source is usesthe IGBT inversion technology, the microcomputer control technologyand the modern electric power electronic technology independentdevelopment new power source, has the high efficiency, the powerfactor and may the accuracy control characteristic. Specially suits tocopper, the aluminum, the nickel, the molybdenum, the titanium andother precious metals and the alloy spot welding, suits and itsautomatically welds the application to the precision part welding.This series product has provided the formidable on-line monitorfunction as well as above fine man-machine contact surface,04AL thetype separates the controller and the transformer, is advantageous forthe installment service and the replacement 1. The multi- parameters monitoring function, may monitor the actualwelding current, the voltage, the output, and demonstration actualwelding current, welding voltage or output, realization real-timewelding quality monitoring. 2. The man-machine contact surface is fine, uses theinteractive dialogue establishment, the ease of operation 3. The welding counts the function, is suitable to the product qualitytrack 4.4 groups start the input signal (most greatly to start 15 weldingsparameters), the output actuates 3 groups of signals, is advantageousfor the multi- noses use 5.20 parameters save, facilitate the many kinds of weldings varietyuse, the data storage use EEPROM, non- battery life question. 6. Three sections heat up the hypothesis, slow brings the electriccurrent to rise the parachute approach function, the time hypothesisscope width (0-999ms), the adaption complex welding process needs 7. Has the electric current to be abnormal, the monitoring value ultralimits, the net presses ultra limits, breakdown diagnosis and so onthe heat with has reported to the police the function. 8.240x128 LCD demonstrated that, simultaneously demonstrates the manykinds of contents. 9. Stronger exterior communication function: The welding finished, thebreakdown, counts the signal, the RS-232 data communication mouth(selects and matches), is advantageous for automatically welds theuse. 10th, the speed of response is quick. The circular telegram timingcontrol cycle is 0.25ms, compared to usually exchanges welding machine20ms to enhance 80 times.