| 摘要 |
A coupling circuit (10) for charging a pulse forming network (PFN) or capacitor load (30) to a precise voltage is disclosed. The coupling circuit (10) is connected to a DC input voltage source(12). The circuit includes a charging transformer (18), having an input winding (20) connected in series with a switch circuit (14, 16) and the DC voltage source (12). The output winding (22) of the charging transformer (18) is connected to the PFN or capacitor load (30). A charging inductor (28) is placed in series with the output winding (22). A control circuit (34) monitors and calculates the total amount of energy present at the load and the charging inductor (28), and causes the switch circuit (14, 16) 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 (30).
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