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:
Oct. 29, 2019
Filed:
Jun. 06, 2016
Tridonic Gmbh & CO KG, Dornbirn, AT;
Andre Mitterbacher, Dornbirn, AT;
TRIDONIC GMBH & CO KG, Dornbirn, AT;
Abstract
The invention relates to a clocked flyback converter circuit for directly operating lighting means comprising: a transformer (), which has a primary winding (), which is coupled to a controllable switch (), and a secondary winding (), to which the lighting means () can be coupled; a control unit () for controlling the switch (); and means () for directly or indirectly sensing the current through the switch () in the switched-on state and for feeding a signal and reflecting said current to the control unit (). The control unit () is designed to switch off the switch () if the signal reflecting the current has reached a variable switch-off threshold (I), to change the switch-off threshold (I) in order to change the power transmitted by the flyback converter circuit (), and to reduce the switch-off threshold (I) for the current signal only down to a minimum value and to switch from operation in the limit mode to discontinuous operation in order to achieve a further reduction in the power transmitted by the flyback converter circuit () while the switch-off threshold (I) is fixed.