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close up of the switch section. there are five stacked PCBs joined with four thick bus bars bolted to the edges. each board has a set of large MOSFETs on it (which you can't see in the photo) and everything is thermally bonded to a custom heatsink.

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close up of the switch section. there are five stacked PCBs joined with four thick bus bars bolted to the edges. each board has a set of large MOSFETs on it (which you can't see in the photo) and everything is thermally bonded to a custom heatsink.
https://assets.chaos.social/media_attachments/files/114/435/252/659/142/676/original/17fcf1fd1303f445.jpg

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Graham Sutherland / Polynomial (gsuberland@chaos.social)'s status on Friday, 02-May-2025 09:12:24 JST Graham Sutherland / Polynomial

someone asked for pictures of the insides of one of my Cosel 5V 200A power supplies.
pretty hard to get good photos because it's so densely packed. it's an older design so no fancy GaN HEMT stuff, but still some excellent power electronics porn.
#electronics

In conversation about 2 months ago from chaos.social permalink