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you can speed up the video in the settings, press the gear one transformer winding is identical to the second: 190vit0.25mm 190vit0.25mm 75vit0.65mm 190vit0.25mm 190vit0.25mm 190vit0.25mm 75vit0.65m 190vit0.25mm 190vit0.25mm 190vit0.25mm 75vit0.65m 190vit0.25mm 190vit0.25mm primary in series each to its own lamp 1900 turns secondary in series and in parallel with the second coil ends 150 turns = 4 ohm/2567 ohm Raa 225 turns = 8 ohm/2281 ohm Raa