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High Voltage DC-DC Boost Converter Step up to output 300v-1200v 400V 900V 1000V Adjustable Power PSU Module Board Input 3V-5V - AliExpress
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Converter DC/DC isolated - for WIND and PHOTOVOLTAIC energy - Input 200V to 1000V - Output 12V / 3.4A / 40W - CC-12-3.4/1000 - DC-DC Converters, Step-Up Voltage Regulators, Buck-Boost
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switching regulator - 3.3V Buck-boost converter outputting voltage too high - Electrical Engineering Stack Exchange
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