El viernes me animé a abrir mi soldadora eléctrica de 150 Amperes, y descubrí que el bobinado primario tenía lugar como para agregarle algunas vueltas de cable grueso.
Some time ago I'm warming for spot welding projects made with microwave transformers. I searched in my small town and there is no way to get one of those, except buying it new, and rather expensive.
On Friday I dared to open my 150 amperes electric welder, and discovered that the primary winding have place as to add a few turns of thick wire.
Step 1: The wire (el cable)
I bought 1.5 m cable 16 mm2 in section (5 mm diameter). The next highest , 25 mm2, is too thick to pass through the gap of the primary winding.
Step 2: Bobinando (winding)
I could fit only two laps, and with some difficulty (I used soap as a lubricant). By my calculations, each lap provides approximately 0.89 volts. The idea is only to do a test.