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Wireb, the formula used in some literature: L coil(uHy)= (r² X N²)/(9r +10h)

where: L coil's inductance
r: is the radius of de coil
N: number of turns
h: ...

Hi Wireb, the coil turns will depend on workpiece height( pot's height), cooper tubing diameter used,desired frecuency( inductance related with coil geometrical parameters),you can use less turns...

Hi all guys! I'm amazed of your work Chistyakov1971!!! how you brace the coil to the furnace frame?

great work chistyakov1971!:cool: I want to build one
I want to see the first steel casting .

HI to all , welcome Tim! good luck with your new bussines!

this is picture of my 3.5 kw 40Khz IH for research .I use a PIC 16F877 board ( 8 channel analog input and various digital outs... ) to...

Hi all,
I think that Uzzors uses drivers delays to obtain some deadtime to Mosfets.
I use 1.3 uHy four turns coil soaked with coil grouth used in induction furnaces, then some mica paper and after...

Hello all, I'm new In this forum I have become a fanatic of induction furnaces.
I'm the author of the IH schematic on last post. It's based on the genious guy EiriK Taylor's PLL control with few...