DIY Spot Welding machine for battery packs

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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

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/

Theory: Transformer based

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