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8 Components of the Stud Welding Unit
8 Components of the Stud Welding Unit
8.1 Main Assemblies
1- Charging device A - Primary supply
2 - Control B - Welding circuit
3 - Welding capacitors
4 - Welding thyristor
The mains alternating voltage is converted to direct voltage in the charging de-
vice (1). Charging of the welding capacitors (3) is performed with the charging
device and is fully adjustable. The welding capacitors store the energy required for
the welding process. The quantity of energy is dened by the operator via the char-
ging voltage.
The welding thyristor (4) releases the charging voltage.
The charging process and the welding process are controlled by the control sys-
tem (2).
The negative pole of the capacitor is connected to the welding gun. The positive
pole is usually connected to the workpiece via vice grips.
The type plate is located on the backside of the stud welding unit.
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