Before Lunar New Year, I had ordered two 3000 F, 2.7 V supercapacitors from China for about $4 each. I don’t actually remember why, but they arrived (unexpectedly) just before the holiday.

DIY spot welders often use high-powered components that can be a bit frightening, given the potential for dangerous malfunctions. [Wojciech “Adalbert” J.] designed his capacitive discharge spot welder ...

This spot welder contains a very large capacitor that is charged to a precise voltage then discharges through the material to produce a controlled cut. There are 5 key segments that make up the design ...

The project utilizes a battery charger in order to create a spot welder device that is controlled by an AVR ATmega88PA. Using a battery charger provides some benefits such as maintaining most of the ...

Snap-on’s 110V welder is built to handle ¼-inch material in a single pass with 140A maximum output at a 60 percent duty cycle. The welder’s all-copper-wound transformer features Nomex insulation and ...