Method and device for testing at least one LED strip

A test device for at least one LED strip contains: a voltage source, by way of which a cold test voltage or a warm test voltage can be applied to a parallel circuit formed of a test resistor and the LED strip, and an evaluation unit which records the cold test current flowing when a cold test voltag...

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Bibliographic Details
Main Author KLINGER JUERGEN
Format Patent
LanguageEnglish
Published 31.07.2007
Subjects
ALARM SYSTEMS
ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
ORDER TELEGRAPHS
PERFORMING OPERATIONS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
TRANSPORTING
VEHICLES IN GENERAL
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Summary:A test device for at least one LED strip contains: a voltage source, by way of which a cold test voltage or a warm test voltage can be applied to a parallel circuit formed of a test resistor and the LED strip, and an evaluation unit which records the cold test current flowing when a cold test voltage is present and diagnoses an error if the cold test current deviates from a required value by an above-the-threshold amount. A test device contains a switching element connected in series with the test resistor and an error circuit connected to the at least one LED strip, which during the warm testing records an over-the-threshold deviation of a current flowing through the at least one LED strip from a pre-specified value and for an over-the-threshold deviation opens the switching element.
Bibliography:Application Number: US20050119946