Patent ID: 7547353

Claim:
A pulse generating system for generating high voltage pulses to energize an electrostatic precipitator ( 10 ), said system comprising: A first power supply ( 1 ) and a second power supply ( 2 ), where said second power supply ( 2 ) is arranged to pre-charge said electrostatic precipitator ( 10 ) to a DC voltage; A storage capacitor ( 7 ) and a series inductance; A clamping circuit; A switching device ( 5 ) coupled in parallel with an anti-parallel rectifier device ( 6 ); and wherein said system is arranged to be coupled to said electrostatic precipitator ( 10 ); characterized in that said switching device ( 5 ) has a gate electrode and that said switching device ( 5 ) has controllable turn-off capability, being controllable by a gate signal supplied to said gate electrode.