Development of high dc voltage for gas laser power supply / Mohd Daud Rajab

The report presents the development of a high voltage power supply source for gas laser applications using solid state devices. The complete system comprises a low scale rectifier circuit, oscillator circuit, flyback transformer and double Cockroft-Walton. The input of the system is a low dc voltage source of 13 V. The system uses power transistor switching that will cause the flux to fall and cut the entire secondary winding of the flyback transformer producing square wave pulses. Enough energy are required at the primary in order to produce constant output voltage. The Cockroft-Walton acts as the voltage multiplier. This development had achieved 77.6 kV dc at the output of Double Cockroft-Walton, which is adequate for the generation of laser. A comparative study had been carried out on PSpice to observe the performance of particular circuit theoretically.