5-12V ZVS Low Voltage Induction Heating Power Supply Module with Coil Power Supply Heating Power Supply Module

It was smaller than I thought it would be however it works well.

Perfect for dynavap, you'll need to find your sweet spot cause it clicks fast no matter what unless you modify it to induce a smaller area. Will make a small bolt or nail red hot possibly liquid (I haven't pushed it that far) you absolutely need to solder these connections to the sides of the board. It functions in the ports but with a load it will start to melt the plastic casing for the output ports.

So Amazon sent me another coil and it works this time. It said that a power supply doesn't work but I have a 10 amp power supply running this and it works. Just make sure you buy some good quality solder. Rosin core for electronics. The pipe solder doesn't work. But I give it a 10 out of 10 this time

12v too much for this. a 1/4 inch nail blew it. 6v it will work well. 3 for lying.

I finally tried using this (purchased summer of 2023). Tried to power it using 30V 10A bench power supply at 5V/10A. It made a high pitched noise and the PCB smoked slightly near the soldered connections. It didn't heat a small stainless steel tube at all. Seems to be completely defective. -- update -- The device does work, but only when used with a fast rising voltage. Using a bench power supply set to 12V a momentary push button switch drew about 4-5A. A small stainless steel tube (~4 mm diameter) did heat up, but not to red-hot.