Any books or sites for learning regards how the PCB of MIG works , trying to understand how the PCB works . Only a small one but its hard when first looking.
Board is small and not too complex but ...
Questions
Does the red wire carry current from secondary of PCB transformer to torch trigger switch and back to board ? it seems the red lead comes from secondary of transformer to the primary winding of main large transformer.
Does switch use the secondary side of PCB transformer direct with smaller AC voltage ?
Does the centre of potentiometer some how regulate motor current through the collector and emitter ?
Rough drawing ( no scanner sorry)
Not sure bottom photos are necessary but included anyway. TIA
Red wire to primary large main transformer
]
Black wire from centre tap of diodes
Board is small and not too complex but ...
Questions
Does the red wire carry current from secondary of PCB transformer to torch trigger switch and back to board ? it seems the red lead comes from secondary of transformer to the primary winding of main large transformer.
Does switch use the secondary side of PCB transformer direct with smaller AC voltage ?
Does the centre of potentiometer some how regulate motor current through the collector and emitter ?
Rough drawing ( no scanner sorry)
Not sure bottom photos are necessary but included anyway. TIA
Red wire to primary large main transformer
]
Black wire from centre tap of diodes