摘要:
To provide for tuning of an oscillator circuit, a plurality of resistors are selectively connectable in the circuit. To provide for reproducible, accurate oscillation frequency in accordance with switching of a respective resistor in dependence on a digital input signal, electronic switches are respectively connected to the resistors to connect them in circuit in the oscillator to thereby eliminate variable contact resistances of mechanical switches. A digital frequency control signal is generated by placing a movable mask or pattern with openings therein between an array, for example a linear strip of light emitting diodes, and a similar strip of photo transistors, the respective energization of which is determined by openings in the diaphragm. The signals from the photo transistors are stored in a memory, typically a group of flip-flops, for application to the electronic switches controlling connection of the respective resistors in the oscillator circuit.
摘要:
A plug connector for printed circuit boards includes a number of contact elements positioned in a housing. The contact elements each have two connection ends and an intermediate contact positioned between the two ends, where one connection end is in the form of an insulation displacement contact for connecting wires. The insulation displacement contacts are supported on the housing, so that the contact elements are held captively in the housing when connection forces act on the insulation displacement contacts.
摘要:
The invention relates to a core-connecting terminal strip (1) and to a method for producing a core-connecting terminal strip (1) with gel filling, the core-connecting terminal strip (1) comprising at least one two-part housing (2, 3), in which core connection contacts (5) are arranged, the housing (2, 3) forming cavities, which are filled with a dielectric gel (10), the gel (10) changing its viscosity, the gel (10) being introduced into the housing (2, 3) in at least two temporally separate steps, the time between the steps being selected in such a way that the viscosity of the gel (10) of the preceding step has changed.
摘要:
The invention relates to a plug-in connector for printed circuits, comprising a plurality of contact elements, whereby said contact elements have two connecting faces each. The one connecting face is configured as an insulation displacement contact for connecting cores and the other connecting face is configured as a tuning fork contact for contacting contact surfaces on a printed circuit. The insulation displacement contacts of the contact elements can be inserted into a plastic housing. At least one lower edge of the insulation displacement contacts is supported on the plastic housing so that the contact elements are captivated in the plastic housing when connecting forces act upon the insulation displacement contacts. The plastic housing comprises at least one chamber-type area. The tuning fork contacts are completely received by the plastic housing in the longitudinal direction. The contact element is configured as a two-part element, a first part of the contact element comprising the insulation displacement contact and the second part comprising the tuning fork contact. One contact arm each is positioned on both parts of the contact element and the two contact arms interact to give a disconnector.
摘要:
The present invention relates to water-free and cosolvent-free binder compositions A) containing of a mixture of A1) at least one emulsifier-free, hydrophobic binder containing groups which can be polymerized by high-energy radiation and A2) at least one hydrophilic unsaturated polyester resin containing the reaction product of a) at least one unsaturated dicarboxylic acid and/or an anhydride thereof, b) at least one polyalkylene oxide compound having a number average molecular weight of 106 to 2000, at least 2 hydroxyl end groups and at least 2 oxyalkylene units, wherein at least 50% of the oxyalkylene units are oxyethylene units, and c) at least one hydroxy-functional compound containing at least one polymerizable unsaturated group per molecule selected from vinyl, allyl, methacrylic and acrylic groups. The present invention also relates to aqueous dispersions containing the binder compositions A), to a process for preparing an aqueous dispersion containing the binder dispersion, to a process for diluting the binder composition with tap water, to producing coatings from the aqueous dispersions and to the use of the binder compositions for preparing coating, adhesive or sealant compositions.
摘要:
A measuring wheel detects forces and moments between the rim and axle of a vehicle wheel with measuring sensors between the rim face and a wheel flange apparatus transmits the energy and data to a measurement evaluation and processing system on the vehicle. The wheel flange and/or the front of the rim consists of a fiber compound, while the apparatus on the wheel for transmitting energy and data are fitted on the inside of the rim bed holding the vehicle tire and extends essentially over its circumference. Thus the static properties and dynamic behavior of the measuring wheel during travel correspond to the greatest degree to the original wheel. Effects which falsify the measurements such as increased wheel weight and the like do not arise.
摘要:
The present invention relates to coating compositions, which are curable by radiation and contain I) 0 to 95 parts by weight of at least one binder curable by radiation and containing maleate, fumarate and/or acryloyl groups other than those of component II), II) 5 to 100 parts by weight of a mixture of A) 20 to 80 parts by weight of at least one polyester resin prepared from fatty acids, provided that at least 20 wt. % of component A) is a fatty acid having a number average molecular weight of 112 to 400 and B) 20 to 80 parts by weight of compounds containing (meth)acryloyl groups, having a viscosity at 23.degree. C. of 10 to 1,000 mPa.s and having a number average molecular weight of 170 to 1,000, wherein the sum of the parts by weight of components I) and II) adds up to 100, based on the weight of components I) and II), and the sum of the parts by weight of components A) and B) adds up to 100, based on the weight of components A) and B).
摘要:
The present invention relates to a terminal element including electrical contacts in insulation displacement technique in chambers of a receiving part for the strapless connection of conductors. The terminal element defines openings for receiving the electrical conductors. A chamber of a receiving part includes at least one opening for the introduction of a conductor. A sliding part surrounding a part of an insulation displacement contact element disposed in the chamber. The sliding part has an opening coinciding in one position of the sliding part with the opening in the receiving part, with the opening in the chamber and with the contact zone of the insulation displacement contact element. The closing part includes a device accessible from outside for moving the sliding part.
摘要:
Ventilator cover (1) for exhaust ventilation of roofs in the ridge, hip or arris area, with preferably a plastic ventilator cover body (2) and sealing element (9), the sealing element (9) having a shape approximating that of a wedge in cross section and a sealing element body (10) which consists of plastic foam. To improve sealing properties and to increase the service life of the sealing element (9), an essentially nonporous skin (14) is provided on at least one of the free surfaces (11, 12), preferably on outside surface (11), of the sealing element body (10) so as to cover roughly its entire area. This skin (14) is formed from a structural change of the material of the sealing element body (10) at its surface (11, 12), so that the skin consists of the same plastic as the sealing element body (10), and is permanently connected to it.
摘要:
Compounds where a solid carrier material which contains diphosphine rhodium or iridium complexes fixed on the surface thereof, of which the carrier material has the formula IV or IVa: ##STR1## wherein Y denotes two monoolefin ligands or a diene ligand, M is Ir(I) or Rh(i), Z is --Cl, --Br or -I, A.crclbar. is the anion of an oxyacid or complex acid, T is a solid carrier material, r is 0, 1 or 2, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are as defined in claim 1. These materials are heterogeneous and separable catalysts for the asymmetrical hydrogenation of prochiral compounds containing carbon double bonds or carbon/hetero atom double bonds, for example ketones and imines.