Driving circuit to generate a signal pulse for operating a light-emitting diode

A driving circuit (10) to generate a signal pulse for operating a light-emitting diode (20) comprises an external terminal (LEDK, LEDA) to connect the light-emitting diode (20) to the driving circuit (10). In a first operating state/pre-charge state of the driving circuit (10), a first controllable...

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Bibliographische Detailangaben
1. Verfasser:	Lueger, Manfred
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES BASIC ELECTRONIC CIRCUITRY DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS PULSE TECHNIQUE RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A driving circuit (10) to generate a signal pulse for operating a light-emitting diode (20) comprises an external terminal (LEDK, LEDA) to connect the light-emitting diode (20) to the driving circuit (10). In a first operating state/pre-charge state of the driving circuit (10), a first controllable switching circuit (100) connects a first side (301) of a capacitor (300) to a reference potential (Vref) and a second controllable switch (200) connects a second side (302) of the capacitor (300) to one of a supply and ground potential (VDD, VSS). In a second operating state of the driving circuit (10), the first controllable switching circuit (100) connects the first side (301) of the capacitor (300) to said one of the supply and ground potential (VDD, VSS) and the second controllable switch (200) connects the second side (302) of the capacitor (300) to the external terminal (LEDK, LEDA) to provide a signal pulse for operating the light emitting diode.