ABSTRACT
The machine
is designed to serve with an output of 250A. it has two pats which are the
primary and secondary parts. The primary part, through which voltage is
supplied to the machine has 180 turns which is made of 2mm2 S.W.G 14
copper coil. The secondary part has 45 turns made of 4mm2 S.W.G 8
copper coil.
Both turns are wound on separate limb
of the laminated core. The voltage from primary turns flows to the secondary
turn by induction.
The machine contain a power switch
through which the machine can be switched on or off when connected to the power
source. The indication light simply shows when the machine is on or off which
is equally controlled by the power switch.
The fan connected to the machine helps
in the looking of the temperature of the machine, it gets started once the
machine is on.
The
welding current is adjusted by varying the spacing between the primary and
secondary windings when the cranks is rotated, clockwise the insulating block
between the two winding moves down, the magnetic flux leakage and the inductive
impedance are increased, thereby reducing the welding current in the secondary
windings. Also as the insulating block is moved upward, away between the two
turns, the magnetic flux leakage and the inductive impedance are brought down,
causing the welding current to rise.
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