Stud welding system

Details Stud welding system Stud welding system

1990-02-12

1991-01-29

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 920

Patent

active

049888420

ABSTRACT:
A stud welding system wherein welding is prevented unless the armature is located within an acceptable displacement window. A D.C. signal representative of armature position is generated by connecting differential amplifier across the coil and applying a constant voltage across the coil. The output of the amplifier is converted to a D.C. signal which is received by window comparator which will enable welding only when the armature is properly located.

REFERENCES:
patent: 3932724 (1976-01-01), Raycher

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