摘要:
An evaporator device for coating substrates, in particular for applying an aluminum layer of OLEDs. To attain high evaporator tube temperatures, such as are required for example for the vaporization of materials with low vapor pressure, the heating system is placed into the interior of the evaporator tube. The thermal losses are thereby minimized and higher tube temperatures are possible at comparably coupled-in heating power.
摘要:
A measurement head for a device for measuring the level of a product in a container comprises a transmitter/receiver unit to transmit a scanning signal and receive an echo of the scanning signal returned by the product, a fastening element to fasten the transmitter/receiver unit to a support and at least one actuator to move the transmitter/receiver unit relative to the fastening element.
摘要:
A friction pump (1), such as turbomolecular pump, includes a steel housing (2) in which a steel shaft (15) is supported by a bearing (16). A rotor (4) with a central bore (21) is mounted on the shaft. In order to reduce the risk of the joint area between the rotor and the shaft becoming loose, a ring groove (26, 31) which encompasses the joint area between the rotor is provided in an area adjacent at least one of the faces of the rotor. A reinforcing ring (34, 35, 38) of a high strength, low thermal expansion material encompasses one of a thrust member (28) and cylindrical rotor sections (32, 37) adjacent the shaft.
摘要:
The conducting path width of a spiral printed circuit coil is reduced for the inside of the spiral coil to obtain more inductance in the same space without substantial sacrifice in Q. In another form of spiral coil with non-constant path width, the path width is reduced in a sector of the coil located between the inner and outer terminals to reduce the distance between terminals with minimum sacrifice in inductance or Q.