Above the din we also hear a few expletives, because the mass-produced sets can be pricey. Pulling the trigger activates a piezo circuit, which sends a high-energy pulse through the set. More From DIY the Holidays 201613 articles Keep Your Christmas Tree Fresh How to Put Up Christmas Lights 5 Turkey Tools to Save Your Thanksgiving How to Fix a String of Christmas Lights 5 Tools For Cutting Down Your Own Christmas Tree . If it's fried (you can check it with the LightKeeper Pro), be sure to replace it with a new one of the correct rating, which should be indicated on the plug. When you buy a new string, you usually get a blinking bulb, a spare bulb or two, and a spare fuse (little bitty cartridge thing). I also usually create lengths of wire from the strands as well.How Christmas tree lights work:(all these comments apply to the miniature light strings the larger night-light size work entirely differently they are in a parallel circuit)All the strings plug into standard 120 v AC US electricityThe bulbs are in series, known as when one goes out, they all go out more on this later, because sometimes its not quite true.Lights are resistors that heat up enough from the electrical flow to give off light (explained in the Secret Life of Machines). Start putting the lights on the tree by wrapping them around the tree from the bottom. Make it so that the very end of your string of lights comes down out of the tree behind the trunk, in an area not as easily seen. Even replacing a bad bulb or two doesn't seem to remedy the problem. (course, theyll be half off AFTER Christmas). Since that resistor is gone, the rest of the string will get a little bit brighter (and a little bit hotter and burn the next one out quicker)Finding which bulb is loose: Generally, most people will shake the string to see if it relights, then zero in on the loose one. If you have extra lights when you get near the top, then rewrap the lights from the top going down. You can fix a faulty shunt with the LightKeeper Pro. If youre hip to these, you can easily demo that to students.Uses for dead strings:Since a 100 string uses about 1.2 v each, a flashlight battery (1.5 v) will light one bulb up just about right. d23ee43039 ferocilockma.skyrock.com/3287296068-Best-Christmas-Songs-Playlist-2012-Toyota.htmltiuatioprofsimpda.alltdesign.com/austin-tx-restaurants-open-christmas-day-2013-1693624www.blogster.com/exdisvigemor/stuarts-draft-christmas-parade-2015-gatlinburgwww.plurk.com/p/lzzquqenearisanpor.amoblog.com/christmas-doctor-who-2012-trailer-movie-1967055wallinside.com/post-57135840-civil-war-muskets-history-of-christmas.htmlancenseehardfor.mybjjblog.com/christmas-trees-for-sale-at-lowes-1156871www.plurk.com/p/lzzqu3prepcotertihou.wapka.mobi/site_66.xhtmldiazvoninducterg.total-blog.com/a-very-special-christmas-1989-snow-2962545
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