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These are packaged very poorly to come all the way from China. Just a sealed plastic bag and a small amount of bubble wrap. I received mine with the coil smashed somewhat and a stand off was broke as well but it did not affect the performance of it. I have a 30v 10a PS which is almost too small for this 1800w version. You have to really watch the size & thickness of the metal you are using or otherwise it will draw too many amps and blow a fuse in the PS. It did well just using a small screwdriver or a file to heat up and it heats very quickly on those items but I tried putting the handle of a crescent wrench in the coil and it immediately blew the fuse in my PS. The coil heats up very fast to where you cannot touch it in just a few seconds so it is important to purchase a small 12v water pump and a CPU type cooler/radiator to dissipate the heat. There are some examples of ZVS's on youtube with coolers attached. You could also use a small 12v submersible pump in a bucket of water and that will work just as well. The capacitors have yet to get even warm so the 2 fans on top are doing their job. I purposely bent the coil sideways on mine so I could introduce the metal I am heating from the side of the coil as opposed to trying to enter it from the top of the coil, it just seemed easier to me to control where the metal is at in the coil while heating. Be careful and try not to touch any metal to the coil or it will instantly spark and cause more of a current draw and will shut down. Otherwise no real complaints and works as advertised.Read full review
Verified purchase: Yes | Condition: New
Works as well as more expensive units.
Verified purchase: Yes | Condition: New
отличный товар
Verified purchase: Yes | Condition: New