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I finally managed to review the "new Rev 0" Mini Spot Welder. I have done my best to explain in detail what the issues are and how to correct them, hopefully improving the life and performance of this version. I cannot guarantee that these mods will give you a perfect and flawless product so please apply them at your own risk.

Index
00:00 - Intro
03:20 - Brief description on differences
05:04 - Unit description
06:28 - Driver circuit Comparison: Old Rev 0 Vs. New Rev 0
09:08 - Driver circuit in New Rev 0
12:41 - Driver Schematics and Mods explanation
15:44 - Trigger scope shots
22:51 - Resistor mods on schematics and MCU PCB
31:08 - Circuit differences
32:15 - The driver circuit problem
33:08 - Weld pics
34:20 - Live Weld example
35:58 - Booster circuit Regulation Ripple
37:47 - MOSFET turn on phases
45:55 - Product considerations
47:40 - Anti Spark connector
49:59 - Gate turn-off scope shot
51:09 - Final considerations

Schematic of the New Rev 0:
[ Ссылка ]

All Current Mini Spot Welder versions: circuit Analysis, differences and faults
Bk11/bl18 Schematics:
[ Ссылка ]
[ Ссылка ]
BJ07 Schematics:
[ Ссылка ]
[ Ссылка ]
"New" Rev 0:
[ Ссылка ]

Links to some tech docs:
MCP1407
[ Ссылка ]
MCU Nuvoton MS51FC0AE
[ Ссылка ]
LTV 357 Optocoupler
[ Ссылка ]
Infineon IPLU300N04S4-R8
[ Ссылка ]
Miller Effect wiki:
[ Ссылка ]

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