Mawitö;212638 said:Muito obrigado Ruy, I was hoping to make a spot welder too, i have in a breadboard done the timer circuit with a 555 to open a solid state relay, i´ll post this weekend when i have some time to write it down in kicad, so you guys with more experience could tell me if i´m doing something wrong.
For starters i don´t understand the fuse in that schematic, if the machine is 1000A, you put a 1000A fuse? or since it is behind the primary of the transforemer it wont draw so many amps in that part of the circuit.
Thanks
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