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I got my hands on a TRS-80 Model 1 (Level II)! I'm inspecting the machine and building a DIY power supply and a video cable for it in this episode. // Kindly sponsored by PCBWay - Get your first PCBs free! - https://www.pcbway.com/ This video is part of the #SepTandy 2020 festivites. Other participants are: Mr Lurch's Things: / mrlurchsthings Josh Malone: / @48kram The Retro Channel: / theretrochannel Adrian's Digital Basement: / adriansdigitalbasement DaveJustDave: / mrdavejustdave MindFlareRetro: / mindflareretro Tech Tangents: / akbkuku Retro Spector: / retrospector78 LGR: / lazygamereviews I highly recommend checking these people out if you haven't done so already! Here's a playlist of all SepTandy 2020 videos that is regularly updated: • SepTandy 2020 The excellent TRS-80 technical manual is available for download here: http://www.1000bit.it/support/manuali... My PSU design is based on Dean Bear's much more powerful design: http://www.trs-80.com/wordpress/zaps-... The schematic I based things on is available as a pdf here: https://github.com/calphool/TRS80MXS/... Here's Mr Lurch building one of the aforementioned power supplies: • Tandy TRS-80 Model 1 Pt1 - The Power Suppl... Here's what I used for my build: I used a 15V (2x7.5V) 10VA center tapped transformer for the AC side and a 12V (2x6V) 18VA center tapped transformer for the DC supply. Mostly because I had these parts laying around anyway. The AC side is a bit overpowered (it should only need 350mA), while the AC side should be just enough (needs around 1A). 160 x 100 mm Perfboard (preferrably single sided) BOPLA KS 450 Universal Case 188 x 110 x 70 mm Bridge Rectifier (I used a KBPC604) 1000uF 35V Capacitor 1k Ohm resistor LED 4 wire electrical wire Power switch (on/off) Fuse holder I used a 1A slow fuse, but a 500mA fuse should be enough for a 230V supply Hirschmann MAS 50 5-Pin DIN plugs*: DE: https://amzn.to/3gWrMZM For the video cable you just need a coaxial cable, an RCA plug and another 5-pin DIN plug. The pinout is here: http://www.classiccmp.org/cpmarchives... This video was sponsored by PCBWay. TIME STAMPS: 0:00 Introduction 1:26 Sponsor Message 1:50 Inspecting the TRS-80 10:24 Building a Power Supply 20:19 Modding the Case 26:24 PSU Unconnected Test Run 27:45 Making the Power Cable 36:44 Making a TRS-80 Video Cable 38:22 TRS-80 Test Run 44:49 Conclusion -------------------------------------------- MUSIC by FOCUS 10 https://focus10music.bandcamp.com EQUIPMENT AND TOOLS I USE: https://kit.co/janbeta * TWITTER: / thejanbeta PATREON: / janbeta WEBSITE: https://www.janbeta.net TWITCH: / thejanbeta LBRY: https://open.lbry.com/@janbeta:b YT CHANNEL MEMBERSHIP: / @janbeta Thanks for watching! Stuff marked with "*" contains affiliate links. You don't pay anything extra and I get a little commission from everything you buy through the links (even if you buy something different there). #JanBeta #Powersupply