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:
Sep. 05, 2006
Filed:
Feb. 26, 2002
Philip Matthew Jones, Cambridge, GB;
Christopher James Newton Fryer, Cottenham, GB;
Philip Matthew Jones, Cambridge, GB;
Christopher James Newton Fryer, Cottenham, GB;
Pelikon Limited, Caerphilly, GB;
Abstract
An electronic circuit for providing a high voltage alternating current supply from a DC supply to an electroluminescent lamp. The circuit includes an inductive element and an output switching element arranged in series. The output switching element is operable to alternate, in use, between a first state and a second state, whereby in the first state a current path is provided through the inductive element and the output switching element, which current path is interrupted in the second state, such that when the output switching element changes from the first state to the second state, the inductive element generates a voltage at an output of the circuit for charging the electroluminescent lamp. The circuit includes an output diode arranged to prevent current flowing back from the output while the output switching element is in the first state.