| 摘要 |
In the apparatus disclosed, a direct current source charges several banks of capacitors. A discharge circuit connects the capacitor banks to the same welding terminals. Charge-circuit decoupling devices, each connected to a separate bank in the charging paths from the source to the bank, decouple the banks from each other. Discharge-circuit decoupling devices, each connected to a bank in the discharge paths of the circuit between the banks and the welding terminals, decouple the banks. The charge-circuit decoupling devices may be composed of separate resistors, diodes, or the like. The discharge-circuit coupling devices are composed of resistors, diodes, thyristors, current switches, or the like. |
