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Science
Lab 
DIY Plasma Globe
There
are all sorts of ways to make a plasma globe. This page deals with simple
methods which do not require a vacuum pump. A normal transparent light
bulb can be used as a plasma globe simply by connecting it to a high voltage
power supply. Most light bulbs contain low pressure Argon gas to prevent
the hot filaments from burning. Fortunately this arrangement is also ideal
for making contained arcs of plasma. The power supply required for the
plasma globe would preferably be a high voltage, high frequency AC type.
A PSU such as this could be made from an ignition
coil, like the ones used in the Homemade
Tesla Coil project. The schematic below shows a driver circuit, for
more details see the Ignition
Coil Driver page. We also sell a ready made ignition
coil driver which also includes extra features..
Click
Here for further info on the DIY Ignition Coil Driver
Click Here for further info on the PWM-OC10A Ignition Coil Driver
It is also possible to create tha plasma globe effect shown in the top picture by using a device that will transmit the electrical power without wires!
Tesla coils radiate high frequency electrical energy whch can easily be collected. Check out the DIY Plasma Gun project to see the effects in action. With a bigger tesla coil and some special gasses it is even possible to make an open air 'plasma globe'. You would not be safe touching this though. See the plasma page for photos.
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