1a Hv High-voltage Dc-dc Converter Dc 10-80v To 6v Buck Step-down Module Board - Integrated Circuits - AliExpress
DC DC Boost Converter High Voltage DC 3V 5V Step up to 200V 600V 400V 200V 300V 350V adjustable Power PSU Module charging|Instrument Parts & Accessories| - AliExpress
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Proposed high-voltage-gain dc–dc converter with four VM stages. | Download Scientific Diagram
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Proposed ZCS series resonant high-voltage DC- DC converter. | Download Scientific Diagram
DC-DC Converters :: Elcon HV DCDC Converter
audio - Filter noise from a high voltage DC-DC converter - Electrical Engineering Stack Exchange