I mean can oscillators like the Joule thief produce heat by induction. I just want to have an idea of how to estimate Pout.
Nor do I understand the question which has many possibilities. Could you expand further with a proposed circuit of the induction heating you refer to. Do you mean the oscillation is coupled into a shorted turn secondary as the induction heating element or are you referring to eddy current losses in the core? I cannot guess so more info please? To successfully measure power out all sources of power dissipation in the Blocking Oscillator must be carefully measured and compared to input power including EM radiated power. If you think EM radiated power is too small to consider, then the thermal bridge method might be a good choice, but it is not the only method. In place of the bridged method, you can do sequential thermal testing against a control. Check it out on my bench. http://www.overunityresearch.com/index.php?topic=702.0
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