More experiments with the induction cooker. Waveforms on my oscilloscope, figuring out how does it work. It seems to be a series resonant circuit driven above its resonant frequency by an IGBT halfbridge. It uses zero voltage switching (ZVS). The transistors turn on at zero voltage, with no turn-on loss. They turn off under a current, but the turn-off loss is minimized using snubber capacitors. The output power is frequency modulated. Lower frequency gets is closer to resonance, resulting in more power.
The previous episode:
https://youtu.be/bx8YXvfNtOI
The first episode:
https://youtu.be/Z9ryVMdqndU
Please support my channel on Patreon:
https://www.patreon.com/DiodeGoneWild
Instagram:
https://www.instagram.com/savage_danyk/
