WWZMDiB Mini DIY Tesla Coil Kit Practice Soldering Project Electronic Kit for Adults which can Sing, wirelessly Transmit Electricity, Light Fluorescent Lamps, and Have Wonderful arcs.

For $10, this is a nice little fully-functional Tesla coil kit! It is relatively low power, so the arc is small, but it is indeed a fully-functional Tesla coil. I was able to light the included bulb, along with a fluorescent light bulb, and the fluorescent light bulbs on my workbench. Assembly is mostly straightforward, but make sure the primary windings are not too close to the secondary, otherwise the secondary will arc to the primary, possibly damaging it. I had several arcs, but it does not seem to have damaged it (other than a black mark). I 3D-printed a small spacer to keep this from happening again. The power supply is important. At first, I was using a 15V supply, but I seem to get better results with a 24V, 6A power supply. Playing music through the arc works as advertised. Keep in mind that the volume level is very low, but you can indeed clearly hear the music being played in a quiet room. Overall, I am very pleased, and this was well worth the money. My kids and I spent hours playing with it. In fact, I bought a second one so that I can experiment with it, without worrying about breaking my original one. Pros: * Great value for the price * Fun to play with Cons: * Make sure you have a beefy enough power supply. I recommend 24V, 2.5 A minimum. * Assembling the primary windings can be tricky -- ensure you have the correct number of turns, in the correct direction, and at a sufficient distance to prevent arcing, but not so far away to decrease coupling efficiency. You can find the the 3D-printed primary coil spacer I designed on TinkerCad by searching for "Tesla Coil Winding v2".

Bought as a stocking stuffer for a EE tech. Instructions are very badly written in some attempt at English. If this was anything else these instructions would be borderline dangerous. Amazon with all these negative reviews for same non-functional gimmick. Why are they not removed from sale. Terrible junk and terrible product. Borderline dangerous quality

Quite Small and fragile. The plasma arc created is quite small (about the size of a pinhead). The radiated EMF is pretty strong able to light up a fluorescent tube within a few inches. No power supply is provided and quite a large range of voltages is specified. Around 19 volts seems to be best although the heatsinks quickly get quite hot. I did not try anything greater due to heat although 24 volts is the specified upper end. Less than 15 volts and the performance drops off.

The kids really loved this item. Although the documentation was entertaining to read, i.e., "tighten the three screw lizards", it could use better directions for assembly. Did find help on YouTube using the part number and description. Worked first time!

Value for value? Nope. Save your money. It can take 12-24c dc output but anything I had over 12v the barrels didn't fit as the tend to be beefier. Does it work? Yeah you can get an led to warm up but at 12v that's about it I couldn't get an arc. The little red wire is the primary coil. Better to hold on to your $10 and put it towards a better kit because this one is lacking.