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:
Jan. 01, 2019
Filed:
Feb. 05, 2015
Tridonic Gmbh & CO KG, Dornbirn, AT;
Andre Mitterbacher, Dornbirn, AT;
Paul Dalby, Cleveland, GB;
Deepak Makwana, Tyne and Wear, GB;
Wayne Bell, Durham, GB;
TRIDONIC GMBH & CO KG, Dornbirn, AT;
Abstract
The invention relates to an operating device () for operating lighting means, in particular LEDs, comprising: a potential-isolated clocked converter (), having a transformer (T), which has a primary winding (N) and a seconding winding (N), and having a controllable switch (M) arranged on the primary side, wherein the converter () can be supplied with a supply voltage converter (); means () for directly or indirectly sensing the output voltage (Vout); and a control unit (ST) for controlling the switch (M), wherein the secondary current (I) through the secondary winding (N) linearly drops, starting from a position value (Imax), which the switch (M) is switched off, wherein the control unit (ST) is designed to adaptively sense a discharge duration (Tdischarge) between a switch-off of the switch (M) and a subsequent drop in the secondary current () to zero in order to control the secondary current (I).