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Kerry D. Wong

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How Does a Spot Welder Work? Review, Teardown and Analysis of a BIFRC DH20 Battery Spot Welder

December 10, 2021December 10, 2021 kwongLeave a Comment on How Does a Spot Welder Work? Review, Teardown and Analysis of a BIFRC DH20 Battery Spot Welder

A while back I built a spot welder with an old microwave oven transformer (MOT). Since then, I have used […]

Electronics 4N04R8, BIFRC, DH20, IP5306, Lipo, Microwave Oven Transformer, MOT, PC357, Spot Welder, STC 15W404AS, Teardown, YXKY

Dual Purpose Spot Welder With Pulse Duration Control

June 18, 2017 kwong51 Comments on Dual Purpose Spot Welder With Pulse Duration Control

I had wanted to make a spot welder for a while. Most of the DIY spot welders use a momentary […]

Electronics 555, BTA41, MOC3061, Spot Welder, Tab Welder, TRIAC

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