摘要:
The invention relates to soluble organic-inorganic compositions comprising linear and cyclic hydrosiloxanes, to a novel process for preparing them and to their use as coating materials.
摘要:
The invention relates to a glass panel element (1) with a fastening element (2) for using in a container (6), in particular for using in a showcase. The fastening element (2) has a profiled edge strip (3) for fixing to the container (6) in a form-fitting manner. Said fastening element (2) is adhesively connected with a lateral surface (4) of the glass panel element (1). A thickness (D1) of the fastening element (2) corresponds to a thickness (D2) of the glass panel element (1). A fastening element (2) is arranged on each facing side of the glass panel element (1) and adhesively connected with said glass panel element (1). The profiled edge strip (3) and the glass panel element (1) close in a flush manner. The fastening element (2) is made of aluminium. The invention also relates to a glass showcase comprising at least one glass panel element (1) according to the invention.
摘要:
The invention relates to a method for provision of a drive signal for a switch which controls the current drawn by an inductive energy storage element in a power factor correction circuit in which a control signal which controls the power consumption is available. One drive cycle of the switch comprises: detection of a predetermined storage state of the inductive energy storage element; when the predetermined storage state of the storage element is detected, production of a switching-on level for the drive signal for a regular switched-on duration which is dependent on the control signal or for a maximum switched-on duration which is dependent on an input voltage, when the regular switched-on duration is greater than the maximum switched-on and production of a switching-off level for the drive signal for a switched-off duration until the next detection of the predetermined storage state.
摘要:
The present invention relates to a drive circuit for a switch (T) connected to a rectifier arrangement in a switching converter which provides an output voltage (Vout) from an input voltage (Vin), the drive circuit having the following features: a controller arrangement (40) having at least one control amplifier (OTA1) and a compensation network (41) having at least one capacitor (C4, C5), a signal dependent on the output voltage (Vout) being fed to said controller arrangement and the latter providing a control signal (S4), a protection circuit (30), which is designed to detect at least one critical state of the switching converter and which provides a protection signal (S3) in a manner dependent on the presence of a critical state, the protection circuit (30) having a discharge circuit (32) coupled to the compensation network (41), a signal generating circuit (20), to which the control signal (S4) and the protection signal (S3) are fed and which provides a drive signal (S5) having drive pulses according to the protection signal, the duty ratio of which drive signal is dependent on the control signal (S4).
摘要:
The present invention relates to a process for desalting aqueous suspensions containing an organic diazonium compound and electrolytes containing Na ions, in which the aqueous suspension is passed through a semipermeable membrane.
摘要:
A device is proposed for holding an electric motor which has a tubular housing portion enclosing the motor armature and supports which are associated with the motor housing are arranged at the end sides of the housing portion for the arrangement of bearings for the motor shaft. The motor is held in such a way that vibrations are minimized and noise is damped in that at least one resilient damping member is arranged between the inner walls of the holding device and the outer walls of the motor housing facing these inner walls. The damping member is supported at the walls of the holding device and motor housing which face one another.
摘要:
The invention relates to a glass panel element (1) with a fastening element (2) for using in a container (6), in particular for using in a showcase. The fastening element (2) has a profiled edge strip (3) for fixing to the container (6) in a form-fitting manner. Said fastening element (2) is adhesively connected with a lateral surface (4) of the glass panel element (1). A thickness (D1) of the fastening element (2) corresponds to a thickness (D2) of the glass panel element (1). A fastening element (2) is arranged on each facing side of the glass panel element (1) and adhesively connected with said glass panel element (1). The profiled edge strip (3) and the glass panel element (1) close in a flush manner. The fastening element (2) is made of aluminium. The invention also relates to a glass showcase comprising at least one glass panel element (1) according to the invention.
摘要:
A sensor according to the invention has an amplifier that is capacitively loaded vis-à-vis the ground by a container and by a medium contained therein and that has a capacitive feedback that is dimensioned in such a way that the amplifier only oscillates when the critical filling level has not been reached. According to the invention, the capacitive feedback is influenced by the container in such a way that the capacitive load of the amplifier input caused only by the container is countered. In this manner, it is achieved that the sensor responds only to the capacitance of the medium, largely independently of the magnitude of the container capacitance. A sensor according to the invention is also characterized by such an operating frequency that, on the basis of the conductivity of the medium, it is possible to distinguish between a massive and an apparent filling of the container with the medium simulated by wetting or foam formation, but it largely avoids those problems encountered with sensors having a very high operating frequency of more than 50 MHz.
摘要:
A circuit arrangement supplies voltage to a load during normal operation and in a standby mode. The arrangement has the following features: input terminals for application of a supply voltage, a first converter unit having a power factor converter and a flyback converter connected downstream from it, with the power factor converter producing an intermediate voltage across a capacitive energy storage element during normal operation, and a converter unit, which is coupled to the input terminals and produces an output voltage across the first output terminals when in the standby mode, and which has second output terminals which are coupled to the capacitive energy storage element in the PFC.
摘要:
Disclosed is a fluidized bed system which includes a fluidized bed reactor, a solids separator and a return line and serves to carry out exothermic processes in a circulating fluidized bed for large thermal capacities. Secondary gas is introduced into the reactor on a level which is at least 1 meter above the bottom of the reactor. The fluidized bed system is provided with one or more displacing bodies, which cover 40 to 75% of the bottom surface area of the fluidized bed reactor and have a maximum height that is equal to one-half of the height of the reactor to ensure a satisfactory transverse mixing of the oxygen-containing secondary gas and fuel in reactors having large dimensions.