Article View: sci.electronics.basics
Article #153Re: Electrical DIY in the old days...
From: admin
Date: Sun, 04 Aug 2002 14:29
Date: Sun, 04 Aug 2002 14:29
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2974 bytes
> > > Which reminds me. In the last few years I've seen more of those appliances > > that use just a single wire with a piece of plastic holding a single pin, > > which is meant to be plugged into the power outlet. The single pin is just > > the ground pin. A good example is the 'low radiation' CRT filter with the > > wire hanging from it. I suppose if this is okay, then the average hobbyist > > could do the same with the Xtal set he builds. > > I wonder if those filters actually do anything more than boost profits for > the manufacturer. :) > My experience of these things (as computer admin) is that if you *don't* connect the wire up to something that's grounded, a nice static charge builds up on the filter and the secretary (or whoever) who insisted on the CRT filter gets a shock everytime a finger is touched onto the screen when pointing something out to a colleague! Whether the "filters" actually achieve anything useful is another matter, but the grounding wire does seem to serve a purpose :) Ian
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