Patent ID: 6326775
Filing Date: 2001-12-04
Classification: H02M

Abstract:
A improved fast DC discharge device for a large rated capacity, comprising: a capacitor (C1); a switch (SW2) serially connected to said capacitor (C1); a high voltage transformer (T1); an amplifier (AMP1) connected to the primary coil of said high voltage transformer (T1); a switch (SW1) connected between said high voltage transformer (T1) and said switch (SW2); a diode (D1) parallel connected to said switch (SW1); and an inductance connected between the secondary coil of said high voltage transformer (T1) and switch (SW1), for reducing the instant current during the early stage of discharging, further for protecting switch (SW1) from failure caused by multiple discharges in a long period of time; and a switch (SW3) connected between the output of the amplifier (AMP1) and the primary coil of the high voltage transformer (T1), which is left open during the discharge cycle, so that the transformer (T1) will show an inductive characteristic during the discharge cycle.