DIY Spot Welding machine for battery packs: Difference between revisions
From wikiluntti
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99 Gears 12V Spot Welder Kit | 99 Gears 12V Spot Welder Kit | ||
* Problem: Blowing up. | * Problem: Blowing up. | ||
** Not enough amperes from the battery. | ** Not enough amperes from the battery. If not enough current for the mosfets, those will blow. | ||
** | |||
* Nickel thickness of 0.1 - 0.2 mm: 120 - 180 Amps. | |||
=== References === | === References === | ||
Revision as of 21:45, 4 May 2026
Introduction
NE555
Transformer
Theory: NE555 based
Idea
The 555 timer circuit controls MOSFETs that deliver short, high-current pulses for welding nickel strips. The 555 shall work in monostable mode.
The MOSFETs (IRLB4132 or IRF3205) handle the high welding current.
Kits
99 Gears 12V Spot Welder Kit
- Problem: Blowing up.
- Not enough amperes from the battery. If not enough current for the mosfets, those will blow.
- Nickel thickness of 0.1 - 0.2 mm: 120 - 180 Amps.
References
Some references related to 555 based
https://hackaday.io/project/204777-diy-battery-spot-welder-build-your-own-power-pack/details
https://www.instructables.com/DIY-Battery-Spot-Welder-Build-Your-Own-Power-Pack-/
pcbway.com/project/shareproject/
