The frequency-converter three- phase machine has a transformer with three primary windings. The rectifier type has a three-phase-to-three-phase transformer , the secondary circuit of which supplies current to low-voltage rectifiers, which in turn deliver high- amperage, low- voltage ... 2. Diagram of the power-supply circuit and the control circuit Resistance Spot Welding 291 Controls direct-energy machines.
|Title||:||Welding and Brazing of Carbon Steels: Resistance welding|
|Author||:||Charles Alvin Davis|