The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1987
Filed:
Mar. 28, 1986
Richard Dallhammer, Nuremberg, DE;
Gerhard Donig, Erlangen, DE;
Hartmut Gaul, Rottenbach, DE;
Walter Schmidt, Uttenreuth, DE;
Franz Neulinger, Erzhausen, DE;
Helmut Schummer, Heusenstamm, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An electrostatic precipitator is fed high voltage pulses by a pulse generating circuit including a high voltage transformer and a first thyristor switch connected in series with a primary winding of the transformer. Magnetic saturation of the core of the high voltage transformer is prevented by recurrently short circuiting the primary winding of the transformer by means of a second thyristor switch connected in parallel to the primary winding. The second thyristor switch is closed for a period of time extending from a first instant following a high voltage pulse crest to a second instant at or before the start of a pulse generating cycle subsequent to the pulse crest.