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Shockers...



Greetings everyone! A student asked me a question that I wasn't
sure of, so I thought I'd pose the question to the rest of you. One of
my students was asking about a practical joke device that looks like a
regular book, but when you open it, it gives the holder a jolt.
I'm not sure what he's talking about (yes, I live a sheltered
life), but my guess is that it is either a "joy-buzzer" device which
doesn't really shock but vibrates or something that has a capacitor in
it.
Does anyone know how these books work? If it is a capacitor,
isn't it dangerous to use such a device? I know the capacitors in tvs
and some old radios have enough "juice" in them to melt a screwdriver
when placed over the terminals...yes, I know from experience when I was a
kid. :-) What type of capacitor is being used?
Hmmm...maybe I should attach a few of these to the magazines I
see kids hiding behind their textbooks, when they should be studying.
:->

Dwight