A LOW-INDUCTANCE CAPACITOR AND A METHOD FOR MINIMIZING INDUCTANCE IN A SNUBBER CIRCUIT

摘要

A low-voltage, low-inductance device for storing electrical charge in a snubber circuit is disclosed as well as a method of minimizing inductance in the snubber circuit using the device. The device, a capacitor (10), comprises a plurality of extended electrodes, in parallel or series, that are joined to a positive conductor terminal at one end spray and at a negative conductor terminal at the other end spray so that end sprays of adjacent extended electrodes are alternately joined to the positive and negative conductor terminals. Accordingly, current flowing though adjacent extended electrodes is of substantially equal intensity but different in direction. As a result, inductance produced effectively cancels out that of adjacent extended electrodes. The method includes sandwiching an insulating film (21) between the positive and negative conductor terminals and alternately joining the conductor terminals to the end sprays of extended electrodes so that current flows in opposite directions between end sprays (22a, 22b) of adjacent extended electrodes, thereby canceling out inductance.