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Portable Fume Extractor / Fan

I’ve got a new tool on my workbench – portable fume extractor. It’s 92mm fan that works from 4 AA batteries and has a variable speed. Mobility is a really good thing, especially when you’ve got a tons of equipment and cables on a bench you can drown in.

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DC-DC Converter Schematic

MC34063 Datasheet from ON Semiconductor

MC34063 Datasheet from ST

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All Photos Are Clicable

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