Deutsche Thomson-brandt Gmbh

Vogt Electronic Ag

Sumida Components & Modules Gmbh

Udo Mai

Uwe Hartmann

Franz Dieterle

Fritz Ohnemus

Roman Schichl

Ekkehard Kollmann

Gunter Gleim

Philippe Maige

Erich Geiger

Anton Duschl

Johann Wandl

Jean-Claude Favreau

Michel Van Den Driesche

Uwe Hartman

A driving module for a gas discharge lamp, in particular for headlights in vehicles, comprises a suitable lamp socket, a carrier for electrical components, and an ignition transformer, wherein the component part carrier is populated at least with electrical components of an ignition unit and moreover is designed for accommodating further electrical components that are required for a self-sustaining operation of the driving module. In addition, the lamp socket is made of a high temperature resistant plastic material and has an integrated high-voltage conducting track.

Activation module for a gas discharge lamp

The present invention provides a device and a method for cylinder sensing in an internal combustion engine. The device according to the invention has a crankshaft sensor device for detecting a crank angle and a predetermined crankshaft position, and outputting corresponding crankshaft signals; an ignition device for igniting the respective cylinder of the internal combustion engine by generating corresponding high-voltage pulses for corresponding control signals, and a control device for receiving the crankshaft signals and outputting the control signals to the ignition device as a function of at least the crankshaft signals, with the control device being so designed that in a cylinder sensing phase, while receiving a crankshaft signal corresponding to a predetermined crankshaft position, it outputs a control signal to generate a high-voltage pulse with a predetermined amplitude that can be reached in at least one specific cylinder; an ignition detection device for determining whether and/or at what ignition voltage the specific cylinder was ignited by the high-voltage pulse and outputting a corresponding ignition detection signal; and a cylinder sensing device for determining whether the specific cylinder is in the predetermined crankshaft position in its power stroke, based on at least the ignition acquisition signal.

Method and device for cylinder recognition in an internal combustion

A television receiver providing a stable image whether or not a composite color signal is present, in which a transmitter-recognition processes the television synchronization signals of the composite color signal. A character generator displays alphanumeric as well as graphic characters. The deflection generators and the character generator are operative with TV signals as well as characters that are alphanumeric as well as graphic. The deflection generators and the character generator are driven by control signals. An oscillator controls the deflection generators, and a phase comparator operates in the presence of synchronization signals to synchronize the oscillator. The phase comparator receives no signals from the input terminal when no synchronization signals are present, so that the oscillator oscillates at a fixed preadjustable frequency to provide a stable image.

Television receiver with a deflecting oscillator that has the additional

The process for ignition detection for an ignition system in a combustion engine wherein a first ignition pulse is generated in a cycle for generating a first ignition spark and at least a second ignition pulse for generating a second ignition spark provides that the alternating voltage for generating at least the second ignition pulse has one or more periods with half-waves having different amplitudes. The first half-wave has an amplitude between the maximum voltage required in the presence of ionization between the electrodes of a spark plug in the ignition system, and between the minimum voltage required in the absence of ionization. The second half-wave has an amplitude exceeding the maximum voltage required. The criterion measured for an ignition of the fuel-air mixture having taken place is whether or not the second ignition spark was generated with the first half-wave of the alternating voltage.

Device and method for ignition detection

An alternating current based ignition system, in which a computer, in which a motorspecific data recognition field ('look-up' table) is stored and which is provided by sensors with operating parameters, controls the duration of the alternating ignition current and the ignition coil energy.

Ignition system for internal combustion engine

The invention provides a circuit for electronic control of an internal combustion engines including injection valves that can be activated electrically as a function of regulated variables such as crankshaft position, engine speed, exhaust-gas composition and engine torque. The circuit includes an electronic control unit with means to activate the intake valves, exhaust valves, injection valves and ignition device as a function of ignition duration and ignition timing. The control unit also includes a start-up program with which ignition sequences of the engine cylinders, intake valves, injection valves and ignition device can be activated for any desired cylinder position of an engine-start-up process. The circuit further includes a program memory, an engine-standstill detection circuit, and an absolute-value angle transmitter to which the engine-standstill detection circuit is responsive. The absolute-value angle transmitter includes a coding disk that is integrally connected with the crankshaft of the engine, circuitry for generating signals corresponding to the crankshaft position during standstill and during rotational movement, and circuitry for generating electrical signals corresponding to engine temperature, engine load and engine knocking. The signals are fed as regulated variables to the electronic control unit.

Circuit arrangement for electronic control of an internal combustion

The ignition system consists of a free-running ignition final stage, a miniature induction coil, a static and/or dynamic determination of the ignition angle, and a power supply. The ignition final stage ensures that the ignition current is an alternating current and that the ignition energy is fed to the spark plugs in a current-controlled manner. The ignition point is determined by reading the ignition angle. The electrical supply to the entire ignition final stage and additional consumers in a motor vehicle is through a power supply that converts the current and voltage.

Ignition system for an internal combustion engine

An arrangement for compensating against the magnetic field of the earth in a picture tube in remote-controlled video-display equipment, in which a compensating voltage is generated by a remote-control channel in the video-display equipment. This voltage is applied to a compensation coil in the picture tube. Current through the coil is adjusted in finely-divided incremental steps, and the current is continuously adjustable. The compensation voltage is applied to one end of the compensation coil, whereas the other end of the coil is supplied with substantially half of the operating voltage of the display equipment.

Method of compensating for the earth's magnetic field in a picture tube

A process for synchronizing horizontal deflection of electron beams in television recievers having a reproduced picture with a visible component, when no transmission signals from a television transmitter are present. If an emitted signal is not available, the synchronization is suspended during the time of the visible picture trace, and is activated only during the picture blanking time. For this purpose, the procedure is to switch off a circuit that synchronizes horizontal deflection during the visible component of the reproduced picture. A synchronization circuit is activated only while the picture is being blanked.

Method of synchronizing the horizontal deflection of electron beams in

A coil arrangement comprising two coils on a single coil former, termed a twin coil, is characterized in that the two coils (W1, W2 and, respectively, W3A), with any respective individual magnetic core (10 or, respectively, 9) required, are mounted with a substantial distance from each other on the coil former (1) and in that the respective residual coupling of the coils (W1, W2 and W3A) is eliminated by an oppositely wound or connected compensation winding (W3B). The compensating winding (8) is located in the one winding compartment (3) and has current from the coil in the other winding chamber (4) flowing through it. As a result the twin coil in accordance with the invention leads to some advantages over known twin coils in which the coupling between the two coils is nearly 100%.

Twin coil

A primary winding of a transformer is coupled to a source of input voltage and to a controllable switch. The switch is responsive to a first control signal for generating output pulses in the transformer secondary windings. A supply circuit is responsive to the output pusles and generates a first supply voltage. A capacitor charging circuit includes a thyristor that is coupled to one of the transformer secondary windings. The thyristor receives the output pulses for providing charging pulses to the capacitor for generating a second supply voltage. A control circuit is coupled to the thyristor for varying the number of output pulses occurring relative to a given number of charging pulses to regulate the second supply voltage.

Switch mode power supply with separately regulated secondary voltage

Television receiver with a micro-computer controlled operating part and

A television receiver with a utility line-separated end and a controlled, line-separating, switched external power supply at the utility line end. Horizontal and vertical deflection currents are generated by horizontal and vertical output stages, and each of the two output stages are connected to a driving stage for the purpose of triggering the respective output stage. A modulator supplies a triggering signal to the driving stage and controls line separation. A horizontal frequency control signal and a vertical frequency control signal are generated and applied to horizontal and vertical sawtooth signal generators. The vertical output stage has one input connected to the horizontal sawtooth signal generator, and a second input connected to the vertical sawtooth signal generator through an error amplifier for vertical deflection of the end of the power supply connected to the utility line. The power supply is synchronized with oscillators for horizontal and vertical deflection, and is connected at the utility line-separated end.

Television receiver with a controlled, line-separating, switched

An external-power stage suitable for use with television sets, for example. A transformer is provided with control circuits in both the primary side and the secondary side. Each of the control circuits have pulse-width modulators which provide pulses to an electronic switch. The control circuit on the primary side provides pulses to that switch of varying pulse width and of sufficient magnitude to maintain the television set in a standby mode. The control circuit in the secondary side of the transformer, on the other hand, comes into operation when the television set is turned on and provides pulses to the electronic switch while operating with the control circuit in the primary side for a predetermined period of time. Thereafter, the control circuit in the secondary side takes over the function of providing pulses to the electronic switch while the control circuit on the primary side is switched to an inoperative stage. The control circuit in the primary side is operative only in the standby mode, whereas the control circuit in the secondary side is operative during the normal mode of operation.

External-power stage

An arrangement in a television receiver in which a sychronized external power stage supplies operating voltage to a remote-control receiver and a microprocessor connected thereto. A horizontal drive circuit is controlled by the microprocessor, and a horizontal end stage is connected to the horizontal drive circuit. The external power stage supplies power during stand-by operation only to the remote-control receiver and microprocessor along with the voltage for operating the horizontal drive circuit and the end stage. Thyristors are connected to the external power stage for supplying power to all other circuit stages in the television receiver. The thyristors have gate electrodes activated by the horizontal end stage for cutting off the thyristors during the stand-by operation and interrupting the supply of power to all other circuit stages in the television receiver, for minimizing the power consumption of the television receiver.

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Untergriesbach, Germany

Udo Mai