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These little kits are Fun! I have read some reviews where builders did not get their coils to work. Take your time, pay attention to the polarity of condensors, direction of winding of the primary coil and note that the two transistors are Not the same. Numbers are small and hard to read, use magnification to see them! Mine worked first try. However, most sellers do Not provide any Thermal Paste (some do). Mine did not come with any, so I figured it may not be a necessity. Wrong! If yours does not come with Thermal Paste, order some elsewhere and use it. I ran mine only a minute or so at a time, but still managed to let the Mosfet power transistor overheat and Magic Smoke appeared! I ordered another kit from a different seller to see if Thermal Paste would be included. Still Not, so I ordered some and waited. Used this and the new one is great. I still do not take chances and will only operate my coil for about a minute or so and I let it cool. It may very well be able to run much longer but I am not willing to test to see. Musical??? I plugged an audio cable (3.5mm male on both ends of cable) into my desktop speaker headphone jack, turned on Buddy Holly and I could hear the music produced by the plasma discharge! Very low volume due to the small size of this coil, but clear and Super Cool! I then tried a tune of my own that I recorded some years ago. Nothing! I guess it does not like Native American Flute music! I let the unit cool, went back to Buddy Holly. Nothing! I am at a loss as to what is wrong. Really No idea, but this thing makes me want to build a bigger unit, or buy a finished coil for music. I am overall very pleased and considering when I rebuild my "play" funds, I might build another or two! I plan to upload a video to youtube of mine running with a "spinner" on the top-load. Look on youtube for Dan Whitepath.Read full review
Verified purchase: Yes | Condition: New
I bought this twice thinking that the first one didn't work because of an error I made in assembly. I did some research into the electronics and tried a second time hoping for a better result, only to burn up the mosfets. I also bought a power brick specifically to meet the requirements in the description, and that didn't change anything. Save some cash and frustration. You can definitely build something similar in your own if you put in a little work. Don't Buy This!!!!!!!!
Verified purchase: Yes | Condition: New
For the price, is a good circuit to learn a bit about how a Tesla coil works. it's very easy to build, the PCB is great. In a couple of minutes you will have it working.
Verified purchase: Yes | Condition: New
I received the item and didn't find instructions attached. After doing search online I figured I needed more than a soldering iron; that includes thermal paste for the mosfets, and more importantly a power supply, otherwise how will it work, right? Not for the novice electronics buff. Good concept, poor execution.
Verified purchase: Yes | Condition: New
Very! Interesting little device. I had no idea a Tesla coil could be made so small. It provided many hours of entertainment.
Verified purchase: Yes | Condition: New
