View Single Post
Old 10th Dec 2019, 1:58 pm   #45
Andrew2
Nonode
 
Andrew2's Avatar
 
Join Date: Mar 2010
Location: Dukinfield, Cheshire, UK.
Posts: 2,034
Default Re: Neon Tester Screwdrivers

Quote:
Originally Posted by Vintage Engr View Post
That's it, "Switch off, Isolate, Dump, & Earth"

Otherwise you'll be like the poor technician who returns to an H.V. installation, - from a dentist's appointment, only to find out too late that his colleague has reversed the connections of an inductor/capacitor circuit. Big bang!

Anyone remember the BBC-2 colour test film, circa 1967/8?
Sure do, it was one of my favourites and I always stopped work to watch. Mind you, a LOT of them were worth downing tools to watch.
In the TV trade at that time, it was common to wave a neon screwdriver near the line output stage to check if it was doing something. A pretty crude test, but it showed signs of life.
__________________
Andy G1HBE.
Andrew2 is offline