Circuit for coupling energy to a pulse forming network or capacitor

摘要

A coupling circuit for charging a pulse forming network (PFN) or capacitor load to a precise voltage is disclosed. The coupling circuit is connected to a DC input voltage source. The circuit includes a charging transformer, having an input winding connected in series with a switch circuit and the DC voltage source. The output winding of the charging transformer is connected to the PFN or capacitor load. A charging inductor is placed in series with the output winding. A control circuit monitors and calculates the total amount of energy present at the load and the charging inductor, and causes the switch circuit to open when the total charge reaches a predefined level, thereby allowing charge stored in the inductor to be transferred to the PFN or capacitor load.