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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Neon screwdrivers
How are they supposed to work?
I tagged one of these onto the end of a TLC order just to get an ok electrician's-sized screwdriver. I don't intend to use the alleged "testing" facility, but I'm curious how it's supposed to work. It looks like it's meant to be touched to a live terminal and have the current flow up the shaft, through a capsule which I assume is the bulb, and then go via a brass end-cap *into my hand*. The last part of that I'm not particularly keen on. I assume that, while they're not well-regarded by most here, neon screwdrivers don't actually electrocute their owners during intended use. Is it just that the current flow is very small, and almost all the voltage is across the neon? Can anyone with a better grasp of electrical theory explain? Cheers, Pete |
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