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Thanks for the reply. I am trying to simulate schematic given in Induction HeaterAn oscillator circuit consists of an amplifier stage and a tank selective attenuator stage, in series.
I can't distinguish how the above LC net performs such a job.
Power supply should be DC, not AC.
@dick_freebird These MOSFET push-pull induction heater modules are available in various variants e.g. at aliexpress, basically working.
Thanks FvM for the reply. There was no IRFP4668 in LTPSICE to simulate. So used generic model.The problem is rather trivial.
Your MOSFET type is "NMOS", with a few mA Idss and very low gm. Can't oscillate.
Why not choose IRFP4668 used in the link?
It's included in LTspice built-in library since many years. NMOS generic model is a small MOSFET as used in logic ICs, no power MOSFET. You may use it to design a milliwatt heater with respective component values.There was no IRFP4668 in LTPSICE to simulate.
Take two.Now I have replace one mosfet with AON6290
Hi FVM ,It's included in LTspice built-in library since many years. NMOS generic model is a small MOSFET as used in logic ICs, no power MOSFET. You may use it to design a milliwatt heater with respective component values.
Take two.
All the inductors are wound on different toroidal coresDo L1 L2 L3 share a common flux field (and common core)? Typically it's a center-tap transformer (where DC supply goes to center tap).
Not sure since you want the flux to heat nearby metal?