DIY Capacitive Discharge Spot Welder (Thyristor based, USB-C powered, portable, no microcontrollers) скачать в хорошем качестве

DIY Capacitive Discharge Spot Welder (Thyristor based, USB-C powered, portable, no microcontrollers)

I designed and built a prototype of USB-C powered capacitive discharge spot welder. It can be used to weld nickel strips to battery packs. This spot welder, unlike many available DIY projects, doesn't need a microcontroller to work: the welding pulse is triggered using relay module and a timing capacitor. Welding current is switched with an old recycled industrial thyristor module (not with a MOSFET, which is usually used in such devices). Components used: -T90RIA120 thyristor module -HW-279 dual 12V relay module -Step-up DC-DC CC/CV converter (XY-SJVA-4) -19 pcs Nichicon UBY 7500uF/35V capacitors in parallel (UBY1V752MHL, EGPD350ELL752MM40H or similar would also work) -USB-C PD 12V trigger module (or barrel jack as cheaper option) -DSN-DVM-368 voltmeter -1 Megaohm logarithmic potentiometer -wires and additional small resistors and capacitors, as shown in the video Project details, updated schematics and all files are stored here: https://hackaday.io/project/187652-no... 00:00 Overview 00:25 Parts 01:07 Test welds 01:39 How does it work? 03:38 Build instructions 03:40 Soldering capacitors 04:20 Bleeder resistors 04:30 Cables and connectors 05:13 Copper electrodes 05:37 Trigger button 06:21 Wiring and assembly