I haven't been able to find anything. It is an Arksen. S/N 009-we-90309 Regardless, I need to take it apart anyway. I need to add a connection to control the ignition switch programmatically. Otherwise, it puts a lot more power into the material than needed after the light has already flashed. Also, it will allow me to trigger it from a distance through a mobile phone app.
I'll take pictures of the insides. I can confirm that Mills is using metal powder. For the trial in the bomb calorimeter, they encased the sample in aluminum (aluminum foil?). He noted that because of that, it required a lot higher power to ignite the process. On Sun, Aug 31, 2014 at 7:15 PM, Bob Higgins <rj.bob.higg...@gmail.com> wrote: > Hi Jack, > > That is unfortunate. We need to find a schematic for this spot welder or > open it up and create one. It could be the secondary is just grounded to > the ground pin. If so, we need to know how it is grounded. Ground loops, > when such high currents are involved, can ruin your test equipment that is > also grounded in the worst case. Strictly speaking there should be no > ground current. However, I have seen equipment being damaged by ground > loops when the setup was simply connected to the right connections, but in > the wrong order of connection. > > Better we step back and do a little more research on the circuit for the > welder you have. I will look to see if I can find anything online. > > Bob > > On Sun, Aug 31, 2014 at 3:53 PM, Jack Cole <jcol...@gmail.com> wrote: > >> Hi Bob, >> >> Unfortunately, I do not get infinite resistance. On the plugin ground >> pin, I get 1 ohm on the bottom electrode bar and the top bar I get >> different behavior. Specifically, when the top and bottom electrodes are >> close together, but not touching, I get infinite resistance between the top >> bar and ground pin. When the top bar is pulled up higher away from the >> bottom bar, I get resistance. Is this a safety mechanism perhaps? I get >> infinite resistance between the other connectors on the plugin and the bars. >> > >
