摘要:
A low-pressure mercury or amalgam lamp with praseodymium (Pr) doped particles of lanthanum phosphate converts 185 nm radiation to UV-C (186 nm-280 nm). For water purification, a plurality of low-pressure mercury or amalgam lamps with phosphor that convert 185 nm radiation to UV-C (186 nm-280 nm) may be used. A method for photolysis of nitroso dimethyl amine (NDMA) may include passing electrical current through a low pressure mercury or amalgam lamp, radiating 254 nm radiation through the lamp envelope into water containing the NDMA, converting 185 nm radiation within the lamp into 230 nm-240 nm radiation within the lamp via a phosphor within the lamp, and radiating the 230-240 nm radiation through the lamp envelope and into the water containing the NDMA, with the radiation from the lamp photolysizing the NDMA.
摘要:
An electrically chargeable energy store includes a plurality of energy cells connected in series, a scanning device for the cell voltages of the energy cells, and a processing device for determining a setpoint charging current through the energy cells based on the scanned cell voltages. The processing device is equipped to determine the setpoint charging current as a function of differences between the scanned cell voltages. A method for charging an electrically chargeable energy store includes steps of scanning of the cell voltages of the energy cells, determining a setpoint charging current through the energy cells based on the differences of the scanned cell voltages, and limiting of a charging current flowing through the energy cells to the determined setpoint charging current.
摘要:
A chargeable energy store includes a chargeable electrical accumulator, an interface for connecting the accumulator to a device for the exchange of energy and a control unit for controlling the energy exchange of the accumulator. The control unit includes a supply voltage terminal, which is connected to the accumulator when a device is connected to the interface for the exchange of energy, and which is otherwise disconnected from the accumulator.
摘要:
To record motion picture film scenes, for example recorded at 24 frames per second, a television recording medium, such as magnetic tape, in accordance with the NTSC standard of 30 frames--60 fields--per second, a sequence of pulses (FIG. 1: graph c) are generated, for example in a motion picture film scanner (3), which pulses have a frequency which is characteristic for the scanning repetion frequency at any film frame repetition rate--for exaple 24 frames per second; a motion picture film scanner (3) and a video recorder (5) are jointly controlled by the central process computer and controller to operate the video scanner to scan the film at the time when a selected frame of the film is before the scanner and, simultaneously and based on a sequence of generated pulses, controlling recording of the film on the record medium by the recording apparatus. A transfer switch may be used, connected to a monitor (11), to selectively display either the scanned scene or the recorded scene.
摘要:
A method for operating a storage device for storing electrical energy, having at least two storage cells. The storage cells are charged with the aid of a physical charge quantity provided by an electrical charging device, and a physical variable is monitored in each case in the storage cells. As a function of the monitored variables, a control signal is transmitted to the charging device for controlling same, and the charge quantity is successively reduced as a function of the control signal. A related storage device for storing electrical energy is also described.
摘要:
A chargeable energy store includes a chargeable electrical accumulator, an interface for connecting the accumulator to a device for the exchange of energy and a control unit for controlling the energy exchange of the accumulator. The control unit includes a supply voltage terminal, which is connected to the accumulator when a device is connected to the interface for the exchange of energy, and which is otherwise disconnected from the accumulator.
摘要:
The present invention is a hybrid sealing technique. According to one or more embodiments of the present invention, an unsealed lamp body is heated and a partial pinch seal is performed on a first side of the lamp body at an outer junction area. Then, a shrink seal is applied which completes the sealing process at the first side of the lamp body by sealing an inner junction area on the same side of the lamp body. The present invention retains the benefits of the shrink seal, but alleviates the difficulty associated with holding the electrode assemblies in place when performing a traditional shrink seal. In addition, the machine which holds the electrode assemblies in place is greatly simplified.
摘要:
An electrically chargeable energy store includes a plurality of energy cells connected in series, a scanning device for the cell voltages of the energy cells, and a processing device for determining a setpoint charging current through the energy cells based on the scanned cell voltages. The processing device is equipped to determine the setpoint charging current as a function of differences between the scanned cell voltages. A method for charging an electrically chargeable energy store includes steps of scanning of the cell voltages of the energy cells, determining a setpoint charging current through the energy cells based on the differences of the scanned cell voltages, and limiting of a charging current flowing through the energy cells to the determined setpoint charging current.
摘要:
A method of stabilizing an arc between electrode tips in a high pressure arc discharge lamp is provided comprising initially creating an arc between the pair of electrodes during a start-up phase of the lamp by supplying power to the lamp for a first period. The method then transitions the arc to attach itself between the tips of the electrodes by removing the power supplied to the lamp for a second period and then resupplying power to the lamp after completion of the second period. The first and second periods for respectively initially supplying and removing power are preferably selected based on either an elapsed period of time, the measured operating lamp voltage, or the measured lamp pressure. Once the arc becomes attached to the tips of the electrodes in this manner, the arc will remain stabilized between the electrode tips during operation of the discharge lamp.
摘要:
A method of stabilizing an arc between electrode tips in a high pressure arc discharge lamp is provided comprising initially creating an arc between the pair of electrodes during a start-up phase of the lamp by supplying power to the lamp for a first period. The method then transitions the arc to attach itself between the tips of the electrodes by removing the power supplied to the lamp for a second period and then resupplying power to the lamp after completion of the second period. The first and second periods for respectively initially supplying and removing power are preferably selected based on either an elapsed period of time, the measured operating lamp voltage, or the measured lamp pressure. Once the arc becomes attached to the tips of the electrodes in this manner, the arc will remain stabilized between the electrode tips during operation of the discharge lamp.