У вашего броузера проблема в совместимости с HTML5
http://www.weldmongerstore.com/ http://www.weldingtipsandtricks.com/htp-tig-welder.html Tig welder settings like AC frequency can be confusing . Here are a few practical applications for setting AC frequency. Low settings like 50hz are great for getting more heat into the part but higher settings pinpoint the arc better.