摘要:
The invention relates to an interface circuit which is suitable for operating capacitive loads such as electric ballasts for lamps at a mains supply circuit, in particular a phase gating dimmer. The interface circuit according to the invention short-circuits the load input if the mains supply circuit does not carry out a load supply.
摘要:
An assembly for lamp construction, comprising a solid W component (10) and at least one film (9) having two contact faces, comprising a metallic molybdenum base body and a coating, which is applied at least in part to said base body and which comprises ruthenium or rhenium alone or as an alloy in the region of the first contact face, which produces the contact with the W component, whereas the second contact face is not coated and is intended to be in contact with glass.
摘要:
For improved ageing stability, an inorganic UV stabilizer, especially cerium aluminate, is added to the polymer so that the UV stability is improved.
摘要:
The invention relates to a method for drying wet or moist coatings on substrates for lamps, in which at least 25%, advantageously more than 50%, of the electromagnetic energy from a thermal radiator which is supplied for drying the coatings lies in the wavelength range between 0.7 and 1.5 nullm. Tubular radiators (5) are used as thermal radiators for generating the electromagnetic radiation.
摘要:
A method for recycling thoriated tungsten objects such as thoriated tungsten scrap resulting from the fabrication of electrodes for lamps. The thoriated tungsten objects are oxidized, homogenized by mixing and chemically reduced under a hydrogen gas atmosphere to form thoriated tungsten. This method eliminates the need to separate the tungsten from its dopants. The thoriated tungsten obtained as the end product is returned to the production process and is preferably used as a raw material for the production of welding electrodes or thoriated tungsten discharge lamp electrodes.
摘要:
A sensor-controlled lamp and a method for triggering it. The sensor signals are evaluated by means of a microprocessor, and on the basis of the change over time in the sensor signals, operating parameters of the lamp controller are changed or activated.
摘要:
The invention relates to a lamp comprising a transparent envelope having a first region defining an enclosed interior volume, and a closure region adjacent said first region, a light source located in said interior volume and electrically coupled to the exterior through said closure region, an interference filter coating formed on the exterior of said first region, said interference filter coating defining a spectral region of transparency, a light absorbing coating formed on the exterior of said first region, wherein said light absorbing coating comprises a ring-shaped portion having a layer thickness of at least 20 nanometer.
摘要:
The invention relates to an infrared radiator, whose radiation source is a luminous element emitting light and IR radiation, and whose vessel which surrounds said luminous element is coated with an interference filter which is transparent only to infrared radiation from a specific subrange from the wavelength range of 700 nm to 3500 nm. Electromagnetic radiation outside the subrange is reflected back into the vessel.
摘要:
The invention intends to improve the determination of the resonant frequency of a resonant circuit, in particular of a heating circuit for a discharge lamp. For this purpose, the frequency of a supply voltage for the resonant circuit is varied within a predetermined frequency range. The voltage or the current across/in the resonant circuit are measured as a function of the varied frequency. The predetermined frequency range is run through in both directions, in each case a maximum for the measured voltage or the measured current being established. The resonant frequency is preferably calculated from the two maxima by averaging.
摘要:
A coated luminescent material having a luminescent material powder formed by grains, the luminescent grains being coated, and the coating being at most 5 nm, preferably at most 2 nm.