Abstract
Welding is a materials-joining process that produces coalescence of materials by heating them to the welding temperature with or without the application of pressure or by the application of pressure alone, and with or without filler metal. It is used to make welds. It is observed that the welding transformer with choke or movable core is having large size, so to reduce the size we are replacing the choke with one coil. This coil functions same as the choke. This coil helps to reduce the size as well as the cost of the welding transformer. The forced air cooled transformer consists of an exhaust fan which rotates at a constant speed whether the welding work is going or not. So, the more energy will be wasted there. To avoid this, the load series motor is used. The load series motor as the name suggests is a motor, which is to be connected in series with a load. The load series motor, which shaded pole motor but designed in such a way that if connected in series with load, it will run and speed of such motor will be proportional to the load current. The ordinary exhaust fan motor can be, easily replaced by the load series motor.
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