Resistance welding control apparatus

Details Resistance welding control apparatus Resistance welding control apparatus

1999-03-23

2000-04-04

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 1124

Patent

active

060464240

ABSTRACT:
When each weld period starts, a control feeds e.g., a high-level ON signal to switching elements having the associated polarity of an inverter so that the switching elements go on and remain on (step S2). This allows the current to start to flow and rise with a sharp gradient on the primary and secondary sides of a welding transformer. When a current detection signal <I.sub.1 > from a sensor reaches a preset current value I.sub.F for current build-up in that weld period (steps S3 and S4), the control stops the on signal and instead issues a PWM signal to provide a high-frequency (e.g., 10 kHz) switching control of the switching elements (steps S5 to S9).

REFERENCES:
patent: 4973814 (1990-11-01), Kojima et al.
patent: 5237147 (1993-08-01), Pazzaglia
patent: 5406045 (1995-04-01), Kiriishi et al.
patent: 5489757 (1996-02-01), Schuermann et al.
patent: 5844193 (1998-12-01), Nomura et al.

Affiliated with

Also associated with

Rating

Resistance welding control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Resistance welding control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resistance welding control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-367206