MEP EP#361: Cold Welding This Podcast Together

<h4><a href="https://macrofab.com/blog/mep-ep361-cold-welding-this-podcast-together">MEP EP#361: Cold Welding This Podcast Together</a><b><br></b></h4><p><b>Adding Cold Welding Function to any Welder</b></p> <ul> <li aria-level="1">Cold spot weld function</li> <li aria-level="1">Most tig welders interface with a 5 pin foot controller <ul> <li aria-level="2">3 pins for potentiometer - analog signal telling how much amperage</li> <li aria-level="2">2 pin switch for initiating the arc</li> </ul> </li> <li aria-level="1">Made a circuit to spoof the footswitch <ul> <li aria-level="2">555 timer to set the duty cycle</li> <li aria-level="2">Monostable mode</li> <li aria-level="2">Capacitively coupled to allow for single button presses</li> </ul> </li> <li aria-level="1">Range: 1ms to 100ms</li> </ul>