Cushman, Darby & Cushman
High tension voltage source
 This invention relates to the high tension voltage source using a blocking oscillation circuit, wherein a switching transistor is cut off at a certain preset current value through a primary winding of a step-up transformer, thereby producing an output of almost constant voltage by use of this simple circuit, while reducing power consumption. This invention is applicable as a D.C. high tension voltage source for electrostatic dust collectors, namely cottrells. 
Matsushita Electric Industrial Co., Ltd.
H
H02M
inventional
Masateru Kazuo
Koyama Arakawa