Usagi Electric | Vacuum Tube Computer P.15 – Building a Soft Start to Battle In-rush Current @UsagiElectric | Uploaded August 2021 | Updated October 2024, 15 hours ago.
In this episode we finally tackle our in-rush current problem. There’s a couple ways that we could have gone about it, but I happened to have some old automotive relays and some thyratrons hanging about, so that’s what we used! The end result, I think, is pretty awesome!

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Chapters
0:00 Intro
2:18 Driving a Relay
4:56 Testing our Relay Driver
6:56 The Thyratron
9:49 The Soft Start Design
12:16 Woodworking?
13:11 All Mounted Up
15:49 Power Up and Testing
18:47 Outro