Re: Neon Tester Screwdrivers
I am slightly puzzled that i haven't ever seen any upgrades to the basic Neon Tester design. I was browsing on an IET forum earlier and saw that several bods had had similar thoughts, viz:
-Two (or perhaps even three) resistors of equal value in series, mitigating the effect of a resistor failing s/c (a rather unlikely failure)
This would make the tool bulkier, but it could still be acceptably small- especially compared to a voltpen.
- All the internal components potted in clear resin to exclude (as much as possible) accidental water ingress. Would this increase the energy of the shrapnel in the event of a explosive failure of the tester though..? Heading away from electrics towards ballistics here.
I can't really accept that the proliferation of 'better' testers would have halted development to the point where no-one took the opportunity to develop and improve.
....Or are there hidden consequences to the improvements i have suggested?
Dave
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