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[TCML] induction cooktop as TC primary?

In the quest for cheap, moderate power, RF...

What frequency do modern induction cooktops work at?  100kHz?

ANyone seen any schematics? What sort of devices are they switching with? I'm sure it's some sort of direct off-line scheme, but they can't be too cavalier, because of EMI/EMC rules.

The little single "burner" table top units are 1500W and cost about $60-70

Could one just get a table top unit , put an appropriate secondary on top of it and be making sparks?

What about safety interlocks? Do they not turn on the coil current unless they detect a pot (I've seen that "feature" mentioned in some of the sales brochures)
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