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:
Dec. 04, 1984
Filed:
Jul. 15, 1982
Alf G Gustafsson, Vaxjo, SE;
Sigvard Matts, Vaxjo, SE;
Flakt Aktiebolag, Nacka, SE;
Abstract
A control device for an electrostatic dust separator (10,11) intended to control in relation to the recorded level of direct current (104) and direct current voltage (102) in the dust separator and with the help of the supply voltage (6a) passes through the zero point the switching in and/or out of the rectifiers (8, 8a) wired into the power supply lead (6a) to the dust separator, usually in the form of two thryistors. The recorded value for the current (104) and the recorded value for the voltage (102) together with the information in respect of the passage through zero of the supply voltage (100) are connected directly via conversion circuits (25, 26) to a data processing unit (112). This (112) is so arranged that in relation to the value (102, 104) of the actual direct current and direct current voltage in the dust separator and with reference to the passages through zero (100) it will on the one hand calculate a specific time interval for the switching in and/or switching out of the rectifier (8) from the power supply and on the other hand generate switching-in and switching-out pulses (112a, 112b). These switching-in and switching-out pulses are fed directly, via adapter circuits, from the data processing unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile