Surge protection or high voltage protection design

  MOV - Metal Oxide Varistor -  for grounding high voltage - passes excess voltage to the ground.


can be used with Fusible Resistor - melts quikly when there is high power.. 


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RUIDENG HD25 HD35 adjustable DC load tester 5-20 volt 35 watt Load tester for batteries with voltage current display

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