摘要:
The invention concerns a construction kit system for fluorescent lamps (1) with separate choke unit. Standard low-power modules which are cheap and easy to manufacture can in particular be plugged in any combinations into choke units fitted as compact lights or in lamp housings. A number of examples are given to show the new possibilities for constructing lighting systems. These fluorescent lamps each have a replaceable light element comprising at least one gas discharge vessel (1) with a base at one end as the light element and at least one choke unit (6) in the form of a separate unit fitted in a housing and capable of electrical connection via plug connectors (2) to the light element. The light element is designed as a standard low-power module with a glass tube diameter of the gas discharge vessel of no more than 13 mm, thus allowing it to be plugged into different housings individually or in groups.
摘要:
The invention relates to an arrangement for the easier inserting of pin bases into sockets, by means of closed-form guide profiles which are used simultaneously for coding, in order to prevent the installing of lamps into sockets unsuited therefor.
摘要:
Apparatus and process for manufacturing or treating a material web that includes at least one heatable cylinder and a combustion unit. The combustion unit is adapted to heat the at least one heatable cylinder with at least one of combustion gases and infrared radiation and the material web is adapted to be guided one of alone and with a transport belt over the at least one heatable cylinder. The apparatus also includes at least one blower box positioned to direct a hot gas onto the material web. The hot gas is at least one of the combustion gas and heated by the combustion gases. The process includes heating the at least one heatable cylinder with at least one of combustion gases and infrared radiation of the combustion unit, guiding the material web, one of alone and with a transport belt, over the at least one heated cylinder, and directing a hot gas from the blower box onto the material web, the hot gas being at least one of the combustion gas and heated by the combustion gases.
摘要:
A new safe-to-touch plug-in socket system for light bulbs is described to replace the previous systems with Edison or bayonet sockets, which are not safe to touch.
摘要:
Apparatus for controlling a heat generating device having automatic adjustment of water temperature to heating requirements, and also for protecting such devices from being switched "on" and "off" too frequently, includes a control relay or a main relay having a "pause" imprint contact for switching "off" and an "on" contact, as well as a chronometric device for measuring how long the heat generating device is switched "on" and for setting an "off" pause imprint interval which is inversely variable according to the measured length of time the heat generating device is switched "on".
摘要:
A method and devices for indication of temperature in frozen products are disclosed. The method involves placing an indicator having a cavity partly filled with a fluid in the freezing equipment. The fluid is frozen, and the indicator inverted. If the freezing equipment malfunctions and the freezer warms up, the fluid will melt and flow down, indicating a malfunction. The present invention includes paired indicators for use with frozen products that may be moved around in the freezing equipment; fluids in the two indicators are frozen in positions 180.degree. apart, so even if the indicator is inverted, it is still possible to get a valid temperature indication.
摘要:
An electro-thermal actuating element. The element includes a container closed by a deformable element. The container holds a liquid and a positive thermal coefficient heating element. The heating element has a temperature/resistance curve having a sharp upward bend in a predetermined temperature range. The evaporation temperature of the liquid corresponds to the bend in the curve so that when the liquid is vaporized, the heating element is essentially switched off. The vaporization of the liquid deforms the membrane which is used for actuating external devices.
摘要:
The electro-magnetic valve includes a hydraulic pilot control consisting of an inlet and outlet with a concentric valve seat, sealable by a flexable diaphragm. The inlet and outlet are both arranged on one side of the diaphragm and a hydraulic pressure is arranged on the other side of the diaphragm. A filling aperture from the inlet to the pressure chamber and a central pressure relief aperture from the pressure chamber to the outlet are provided, the central pressure relief aperture being connected to a bypass in the valve body. An electro-magnetic means for opening the pressure relief aperture is also included.
摘要:
In addition to catalyzing the reoxidization of spent alkaline etching age the suspension of activated carbon powder in the etching solution also increases the speed of etching when the etching solution is recirculated in the etching of printed circuit boards. The ammonium sulfate etching solution is set to a pH of about 9 by the addition of ammonia gas. In the recirculation of the etching solution, a part of the solution can be freed by filtration from suspended carbon particles and passed through the cathode and anode chambers of an electrolysis cell for the recovery of the etched metal by deposition on the cathode. The activated carbon powder for this purpose is calcined before use, at a temperature of between 900.degree. and 1200.degree. C. in vacuum or in an atmosphere that is inert, reducing, or only slightly oxidizing as in the case of an atmosphere containing carbon dioxide, water vapor or both, in a concentration that does not appreciably oxidize the carbon particles.