If your looking to make a really nice, and fairly simple Induction Heater, then look no further, See the link below for the schematic.
This device will heat a screwdriver tip to glowing red in approximately 30 seconds. The coil design can also be modified to a pancake style just like what is used in modern electric induction cooktops. Follow ALL instructions in the video, and link below. Depending on how your unit is made, results may vary.
Resonant Frequency Calculator is here:
Use this tool here to calculate your working coil inductance value:
12ga copper wire is 2.03mm.
**Watch PART 2 which shows a spiral coil and current measurements!**
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