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Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement

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High voltage gap problem (2)

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Red circle: Isolation gap between 320VDC and 4.4VDC is about less than 1mm

Red arrow: Pulsed 320V (220VAC) switching regulator

Blue arrow: 4.4V LDO supply voltage for MCU

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