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Registered Member #1822
Joined: Fri Nov 21 2008, 08:04PM
Location:
Posts: 300
Do some research on DC-DC converters. They are very complicated but, have a very small parts count excluding the oscillator. All it need is an inductor, diode, capacitor, switching transistor(i usually use a 2n2222 for low v) and an oscillator.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
It may be just a CW cascade, or a little inverter driving a cascade (which can use considerably smaller caps). Or it is just a little driver and a small HV transformer (such as those used in photocopiers).
Registered Member #1391
Joined: Fri Mar 14 2008, 04:49PM
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Posts: 40
I took a thing very simmilar to that out from an air freshner. I was small, (2x2x4 cm).
OT:
When connected to an 9v battery, it makes a nice "pikashoe", I connected the negative terminal to me, and the positive to alluminium foil under my shoes. Then if it is on I will collect a static charge and can shock people who are sitting or not using shoes. (Or everyone at a good day, with low humidity)
Not like I go around shoking people, but the device is fun. I have a switch inside my shoe so I can turn it on and off without anyone noticing. It can also be used to "bend water" and levitate small pices of paper.
Registered Member #350
Joined: Mon Mar 27 2006, 05:14PM
Location:
Posts: 106
Estragon wrote ...
When connected to an 9v battery, it makes a nice "pikashoe", I connected the negative terminal to me, and the positive to alluminium foil under my shoes. Then if it is on I will collect a static charge and can shock people who are sitting or not using shoes. (Or everyone at a good day, with low humidity)
Interesting. I guess that only works with plastic soles. But doesn't it look strange when a wire is hanging out of your shoe?
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Lol, OT again, but they use the same thing in rockband drums. You do not want a switch because they have too much mass. So, piezoeletric pads is what they use, because it takes very little voltage to trigger the game, therefor there is little movement required.
Sorry if that was unclear, i typed half then stopped then started again :P.
Registered Member #1391
Joined: Fri Mar 14 2008, 04:49PM
Location:
Posts: 40
DrZoidberg wrote ...
Interesting. I guess that only works with plastic soles. But doesn't it look strange when a wire is hanging out of your shoe?
Hehe, It is a normal leather shoe, (with rubber soles). All the wireing is concealed within the shoe/stipped to my legg under my jeans The only drawback is the swich under my toe is making walking slightly uncomforable.
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mini negativ ion generator
