A welder Features: JDM series of electronic pulses desktop spot welding is the use of a sewing machine pedal pressure structure, novel appearance: flexible operation, lightweight, durable, reasonable design, low cost of distinctions, is indispensable in industrial production less welding equipment. The use of advanced integrated circuit within the main circuit of the welding heat and time control. Welding time using cycle-type count control. To power frequency 50HZ cycle reference count control, time control precise time error is zero; solder transformer through two-way thyristor reverse parallel circuit, and to adjust the welding current evenly through the conduction angle control strength, weld quality is consistent and reliable performance. Spot welding is spot welding of individual parts connected to the contact surface of the welding, the assembled weldment compressed between the two columnar electrodes, when a large current through, the contact between the electrodes at the weldment of much heat is generated , to the molten metal is rapidly heated to form a liquid molten pool, the metal is rapidly cooled after a power failure, the formation of the welded joint. Two weldments can be securely connected. 2. Purpose and scope are widely used in the red - welded structure to replace the rivet connection, the simple connection of complex parts stamping forming spot welding method is used extensively for metal products, electrical instrumentation, automotive, shipbuilding, aviation and other large industries, for industrial production of low-carbon steel wire, stainless steel plate, galvanized sheet and other materials welding. If you have a good time and spot welding current specification, preparation of special nod to weld most non-ferrous materials.