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/diy/ - Do-It-Yourself

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>> No.2037814 [View]
File: 1.79 MB, 2736x1824, XP125 inverter.jpg [View same] [iqdb] [saucenao] [google] [report]
2037814

Thread rejected for PR reasons:>>2033353

>I'm new to electronics. Where to get started?
It is an art/science of applying principles to requirements.
Find problem, learn principles, design and verify solution, build, test, post results, repeat.

>Project ideas:
http://adafruit.com
http://instructables.com/tag/type-id/category-technology/
http://makezine.com/category/electronics/

>Don't ask, roll:
https://github.com/Rocheez/4chan-electronics-challenges/blob/master/list-of-challenges.png.png

>Archive of Popular Electronics magazines (1954-2003):
https://worldradiohistory.com/Popular-Electronics-Guide.htm
>Some guy’s list of electronics resources:
https://github.com/kitspace/awesome-electronics
>Microchip Tips and Tricks PDF:
https://ww1.microchip.com/downloads/en/devicedoc/01146b.pdf
>Li+/LiPo batteries required reading:
http://www.elteconline.com/download/pdf/SAFT-RIC-LI-ION-Safety-Recommendations.pdf

>Principles (by increasing skill level):
Mims III, Getting Started in Electronics
Geier, How to Diagnose & Fix Everything Electronic
Kybett & Boysen, All New Electronics Self-Teaching Guide
Scherz & Monk, Practical Electronics for Inventors
Horowitz and Hill, The Art of Electronics

>Design/verification tools:
LTSpice
MicroCap
falstad.com/circuit/circuitjs.html
NI Multisim
CircuitLab
iCircuit for Macs
KiCAD (PCB layout software, v5+ recommended)
Logisim Evolution

>Components/equipment:
Mouser, Digi-Key, Arrow, Newark, LCSC (global)
RS Components (Europe)
eBay/AliExpress sellers, for component assortments/sample kits (caveat emptor)
Local independent electronics distributors
ladyada.net/library/procure/hobbyist.html

>Related YouTube channels:
mjlorton
w2aew
jkgamm041
eevblog
EcProjects
greatscottlab
Photonvids
sdgelectronics
BigClive
Ben Eater

>I have junk, what do?
Shitcan it

>> No.2036018 [View]
File: 1.79 MB, 2736x1824, exeltech1.jpg [View same] [iqdb] [saucenao] [google] [report]
2036018

>>2036008
This is it. Exeltech XP125.
Things worthy of note:
All components surface mount, backside of the board right on the heat sink (and it's mostly just ground planes on the back)
TO-220 packages modified for SMT (TO-263 didn't exist back then)
No microcontroller, all discrete logic
Literally 1/4 the weight of my Samlex SA-150
True sine <1.5% THD
Card-edge connector suggests that some of their larger inverters might just have a bunch of these modules plugged into a backplane

Schematics or not, I'm sure I'll end up fixing this eventually because there aren't many of these around.



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