Current Sense Application: Electronic Spot Welding

The ability to quickly and accurately detect current is required in order to precisely control welding systems. In the power supply of the electronic spot-welding machines, our Current Sense plays the role of measurement and control. Its fast response can reproduce the current and voltage waveforms and feed them back to the controllable rectifiers A and B to control their output. Using a chopper to superimpose an alternating current on the direct current allows more accurate control of the current. The Current Sense is used for current detection, which can measure the true instantaneous value of the current without causing loss.