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Nice job. I made a plasma speaker as a science fair experiment in 1968, but it didn't sound as good as yours :) Back then it was deemed necessary to add ions to the plasma to increase its conductivity - there was an asbestos wick and some kind of metal chloride solution I think.A couple of points:- Paralleling MOSFETs increases their current handling capability, not their voltage handling. For higher voltage you must put them in series.- The 175ºC max temp for the devices is their _junction_ temperature, not the temperature of the outside of the case. The junction temperature is probably significantly higher than your 70ºC case, depending on heat sinking.
Thanks! Yes, they're all 3-D printed parts.
Here are some samples.
For both black or white backgrounds, I use sheets of foam-core board, available at office supply stores. Inexpensive, easily stored and kept at hand, and easy to replace if they get marred.
Here are some samples (I think... this UI is confusing).
Industrial Fly Trap
Robot Foam Cutter
Large Vacuum Former
Soft Robots: Making Robot Air Muscles
3d Print An Artificial Muscle Robot Hand
Soft Robots: 3D Printing Artificial Muscles
3D Print: Make Servo Controlled Valves
DIY Front Surface Mirror
Treehouse Hardware Series - Tree Attachment Bolt (TAB)
Plasma Bulb with Clock Gear
Desktop Terrarium with Night Light
Tiny Planet: A 3D Printed Mechanical Sculpture
Industrial Pipe Shelving Built-In
DIY Quick & Easy Modern Cat House
Geoweaver: A Walking 3D Printer Hexapod
Web Controlled 8-Channel Powerstrip
Sculpting with Sound
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