Characteristic: 1. AC/DC TIG welder/pulse welder. 2. Three protection circuit welding equipment. 3. Portable design welding machinery. 4. suit for aluminium and alloy, carbon steel, stainless steel, copper and titanium those kinds of color metal. Specification: 1. Input power voltage(V): Single 220V±15% 50/60HZ 2.Rated input power capacity(KVA): 4.5 3.No load voltage(V): 56 4.Output current adjustment(A): 5-200 5.Rated working voltage(V): 18 6.Rated duty cycle(%): 60 7.Gas pre-flow time(S): 0-2 8. Down-slope time(S): 0-5 9.Gas post-flow time(S): 2-10 10. No load loss(W): 40 11. Arcing way: high frenquency 12. Efficiency(%): 85 13. Power factor: 0.93 14. Rank of insulation: F 15. Rank of protection: IP21 16. Weight(Kg): 20 17. Dimensions(mm): 498×328×302