@unpublished {OA2370,
	title = {Power supply for 2 kW ? 25 kV CO2 gas laser},
	year = {1980},
	month = {September},
	publisher = {Ministry of Science and Technology Bulgaria ? USSR (limited access)},
	type = {Project Report},
	abstract = {International project (1251?78 and 1252?78) in which the Technical University of Sofia (S.Valtchev, N.Stefanov) has sucessfully acomplished the task of constructing and implementing in production a high precision (0.01\% regulation) power supply for a cirurgical laser tool (1977-1980). The construction involved a vacuum tube cascaded with MOS-FET to obtain very high quality current source necessary for the stable characteristics of the gas discharge in the laser tube.},
	keywords = {CO2, laser, medicine, precision},
	url = {http://oa.uninova.pt/2370/},
	author = {Stanimir Valtchev}
}
