Electric heating – Metal heating – For bonding with pressure
Patent
1990-11-02
1992-06-16
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219116, B23K 1124
Patent
active
051226340
ABSTRACT:
There is disclosed a welding transformer control apparatus capable of controlling the voltage supplied to the primary winding of the welding transformer. The welding transformer control apparatus comprises a voltage detecting circuit connected to the thyristor for detecting a power voltage and a digital operation unit connected to the voltage detecting circuit via an A/D converter for receiving the digital converted power voltage. The digital operation unit is also connected to a voltage setting unit for receiving a predetermined voltage to be supplied to the primary winding of the welding transformer. The digital operation unit compares the predetermined voltage supplied from the voltage setting unit with the power voltage supplied from the A/D converter and provides a signal to suppress the power voltage under the predetermined voltage. There is also provided a thyristor gate pulse generator connected between the digital operation unit and the thyristor for receiving the signal from the digital operation unit and providing a thyristor gate pulse to the thyristor so that the thyristor can effect striking cnrol, i.e., phase control of the power supplied in the primary winding of the welding transformer whereby the voltage supplied to the primary winding of the welding transformer can be controlled under the desired voltage.
REFERENCES:
patent: 4289948 (1981-09-01), Jurek et al.
patent: 4465918 (1984-08-01), Kiriyama et al.
patent: 4954686 (1990-09-01), Izume
patent: 4999477 (1991-03-01), Yamaguchi et al.
Morita Tatsuo
Yamaguchi Teruzo
Obara Corporation
Shaw Clifford C.
LandOfFree
Welding transformer 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 Welding transformer control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Welding transformer control apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1755134