摘要:
The invention relates to an electronic ballast and to a controller which drives this ballast, in which two communication protocols are provided for the digital drive.
摘要:
In an internal combustion engine, fuel is injected directly into a combustion chamber by an injector that has a piezoactuator. An electrical charge conveyed to and/or removed from the piezoactuator is ascertained by a method that is calibrated at least once during an operating time span of the internal combustion engine. To allow the calibration to be carried out or performed as often as possible, the method for ascertaining the electrical charge transferred to and/or removed from the piezoactuator may be calibrated during at least one triggering off-time (dtK) of the piezoactuator while the internal combustion engine is operating.
摘要:
The present invention relates to a driver circuit for an HID lamp having a circuit arrangement for applying a radiofrequency signal for the purpose of starting the lamp and for applying a low-frequency signal for the purpose of operating the lamp after starting, the driver circuit being designed to drive the HID lamp, immediately after starting, using a radiofrequency signal for a period of time, the period of time being variable and depending on at least one operating parameter for the lamp which is set after starting. It also relates to a corresponding method for operating an HID lamp.
摘要:
In an internal combustion engine, fuel is injected directly into a combustion chamber by an injector that has a piezoactuator. An electrical charge conveyed to and/or removed from the piezoactuator is ascertained by a method that is calibrated at least once during an operating time span of the internal combustion engine. To allow the calibration to be carried out or performed as often as possible, the method for ascertaining the electrical charge transferred to and/or removed from the piezoactuator may be calibrated during at least one triggering off-time (dtK) of the piezoactuator while the internal combustion engine is operating.
摘要:
A method, digital circuit system and program product for reducing delta-I noise in a plurality of activity units connected to a common DC-supply voltage. In order to smooth the fluctuations (delta-I) of a total current demand I, and a respective resulting fluctuation of the supply voltage, a signalling scheme between said activity units and a supervisor unit which holds a system-specific “database” containing at least the current demand of each activity unit device when operating regularly. Dependent of the quantity of calculated, imminent delta-I a subset of said activity units with a respective current I demand is selected and controlled, for either temporarily delaying their beginning of activity in case of an imminent supply voltage drop, or temporarily continuing their activity with a predetermined, activity-specific NO-OP phase in case of an imminent supply voltage rise.
摘要:
A circuit arrangement for operating a high-pressure discharge lamp with an operating circuit for the high-pressure discharge lamp with an input for receiving a switch-on/switch-off signal for the high-pressure discharge lamp and at least one output for providing an operating signal to the high-pressure discharge lamp, wherein the operating circuit is designed to reduce the power of the operating signal provided at the at least one output once a switch-off signal has been received at its input, wherein the operating circuit furthermore designed to provide the operating signal as an AC signal above a predeterminable power threshold value and as a quasi DC signal below the predeterminable power threshold value.
摘要:
In various embodiments, a dimmable operating device for the combined operation of a gas discharge lamp and a semiconductor light source is provided. The dimmable operating device may be configured such that only the semiconductor light source is operated in the lower dimming range and only the gas discharge lamp is operated in the upper dimming range, and at the changeover points at which one sort of light source out of the semiconductor light source and the gas discharge lamp is switched off or on, at the same time a jump in power is applied to the other light source out of the semiconductor light source and the gas discharge lamp, with the result that the human eye cannot perceive, or can only perceive with difficulty, the changeover point.
摘要:
An integrated circuit coupling device includes an integrated circuit package with N integrated circuit layers (L1-LN) arranged as a 3D stack; and a data transmission medium with n data transmission layers (l1-ln), wherein n≧1 and N≧2, and wherein the N integrated circuit layers are electrically connectable to the n data transmission layers.
摘要:
The edges of semiconductor wafers are examined by an imaging method and the positions and forms of defects on the edge are determined, and in addition, a ring-shaped region on the flat area of the semiconductor wafer, the outer margin of which is ≦10 mm from the edge, is examined by means of photoelastic stress measurement and the positions of stressed regions in the ring-shaped region are determined, wherein the positions of the defects and the positions of the stressed regions are compared with one another, and the defects are classified in classes on the basis of their form and the results of the photoelastic stress measurement.