Tridonic Gmbh Co. Kg

Tridonicatco Gmbh & Co Kg

Tridonic Bauelemente Gmbh

Tridonicacto Gmbh & Co Kg

Dietmar Klien

Markus Mayrhofer

Siegfried Luger

Reinhold Juen

Carsten Strietzel

Oliver Wynnyczenko

Peter Lampert

Falk Richter

Dirk Dworatzek

A current sensor () serves to detect an alternating current (). The current sensor () comprises a coupler () designed to decouple a proportional part of the alternating current () as a measurement current (). In addition, the current sensor () comprises a switching terminal designed to feed in a switching signal (). The current sensor () furthermore includes a switchable rectifier () designed to rectify the measurement current () in a manner controlled by the switching signal () and to output it as a rectified measurement current (Vsense).

Current sensor and measuring method for the switched sensing of an alternating current

The invention relates to a method for programming an operating device for lighting, wherein the operating device comprises firmware and an interface for receiving external control commands for operating the lighting. This method includes at least partially programming the firmware of the operating device or the interface by transmitting additional information to the interface. This can conveniently be accomplished while the operating device is in operation. Typical lighting of the invention is the type that includes an electronic ballast for gas discharge lamps.

Method for programming an operating device for lighting means

A circuitry arrangement for operating n gas discharge lamps, n being a whole number greater than 1, includes a single inverter, fed with d.c. voltage, for generating an a.c. voltage alterable in its frequency, delivered to a load circuit arranged at the inverter's output. The load circuit includes a series resonant circuit of an inductance and capacitance, n gas discharge lamps connected to a common node point between the inductance and capacitance, which lamps are connected in parallel to one another, and (n&minus;1) balancing transformers for balancing currents in two gas discharge lamps. The load circuit further has for each gas discharge lamp at least one d.c. current supply line, connected between an output side terminal of a corresponding balancing transformer winding and gas discharge lamp and via which there is delivered to each gas discharge lamp a d.c. current, so as to avoid an unintended extinguishing of a lamp.

Circuitry arrangement for the operation of a plurality of gas discharge lamps

An electronic ballast for a low-pressure discharge lamp (LA) contains an inverter that is fed with direct voltage (U ) and the output of which is connected to a load circuit containing terminal contacts for the lamp (LA), a heating transformer that has a primary winding (Tp), which is connected to the output of the inverter, and a respective secondary winding (Ts Ts ), which is located in a heating circuit with a coil (W W ), for heating each of the two electrodes of the lamp (LA), and a series circuit arrangement that is connected in parallel with the load circuit and which contains the primary winding (Tp) of the heating transformer and an electronic switch arrangement (S S ). For the purpose of identifying the type of lamp and the state of the lamp, the currents in one of the two heating circuits and in the primary winding (Tp) of the heating transformer are measured and evaluated.

Electronic ballast for at least one low-pressure discharge lamp

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Mäder, Austria

Dietmar Klien