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Being new to electronic kit building, this kit wasn’t that difficult to solder and complete despite the fact that the instructions were in Chinese. There are also instructional videos for this product on YouTube. The really fun part was it worked perfectly fine when I plugged it in with an old wallwart I had. I was able to light several different flouresant bulbs with it, but haven’t tried using as a speaker yet. I enjoyed this kit so much I then went on YouTube to find videos for making a homemade Tesla coil from scratch. These projects too were fun and successful (after minimal trial and error).
Verified purchase: Yes | Condition: New
No ball, but no big deal. No instructions, but lots of info on line, so again no big deal. This little project was fun, I spent quite a bit of time messing with it, and like another reviewer, was motivated to do more research online. The arc is so hot I actually melted a hole in a small light bulb (glass melts at 2765 F or so..). Keep an eye on the mosfet transistors so they don't overheat, and use heat sink paste between the transistors and their radiators (not included). I thought this kit gave great bang for the buck, and is a great learning tool. Haven't used it for audio. Puts out lots of radio frequency noise, so blanked out my shop radio while it was on. Don't expect sparks flying across the room, but two turns of primary gave satisfactory results.
Verified purchase: Yes | Condition: New
pictures in instructions for this one are wrong for the model I got however it is pretty much the same . did not get the metal ball but oh well. IF it does not work wrap the wire around the coil the other way and try it it only works one way. the silk screen has the wrong number for the mosfit it is xxx 70 not 07 but the right part was shipped
Verified purchase: Yes | Condition: New
The plastic coil melted thru and shorted everything out within about 10 secconds but it did work fine just don’t put the wire in the middle and ball on top
Verified purchase: Yes | Condition: New
Doesn't supply ball bearing as stated. Very disappointed because that was the selling point for me.
Verified purchase: Yes | Condition: New
