Re: Neon Tester Screwdrivers
Neon test screwdrivers were a banned thing in the BBC when I worked there. I used them till I was about 17 and realised they are potentially lethal:
* Dirty water can get in as most are not sealed (shock risk)
* The neon can short or crack (false negative)
* The resistor can go open circuit or crack (false negative)
* The resistor can short out (shock risk)
* The metal screwdriver part often isn't well anchored thus resulting in a damaged neon
* It's possible for it NOT to light on a live circuit depending on footwear / flooring
Use a DMM or other certified tester.
The only use is as a source of a neon for a project.
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