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Every Electrician Should Have This Homemade Tool, Finds energized wires and broken or broken cables. Materials: 2- Transistors - BC548 1- Transistor - BC558 1- Resistor - 10k 1- Resistor - 100k 1- Resistor - 1M 1- High brightness Led 1- On / Of button 1- Capacitor 100nF (104) ???? EXCELLENT ELECTRONICS COURSE: http://bit.ly/2ogowQp ???? EXCELLENT CELL PHONE REPAIR AND MAINTENANCE COURSE: https://hotm.art/JNNPRyo Music: Jingle Bells 7 by Kevin MacLeod is licensed under the Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/... Artist: http://incompetech.com/