Circuit breaker for the workbench.

Discussion in 'General Electronics Chat' started by hp1729, Jan 7, 2016.

  1. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
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    Yes, a GFI system is right for protecting you, but how about that assembly you are repairing? If that circuit breaker is set at 10 Amps at 120 Volts you can create 1,200 watts of smoke and flame before it kicks in.
    One solution is a variable and isolated AC power source with adjustable current limiting. Nice to have but expensive.
    Another choice is a power supply with a current limiting set just above the expected value. You can design it with current limiting so that some power is still applied to the repair item for troubleshooting purposes. Or you can build it as an electronic circuit breaker that shuts off power.
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Are you talking about protecting a DC circuit/power supply, or a AC line-operated device and you?
     
  3. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    welcome to another episode of... "Is there a question here by hp1729??".
     
  4. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
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    Protecting what you are working on at the bench. Assuming repairs are being made on some assembly or you are building something. If it is plugged into a wall outlet you can draw a lot of current before a defective assembly will shut down and a breaker pops.
     
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