摘要:
A noise maker stop assembly for use with a percussion foot pedal is described. The noise maker stop assembly typically comprises a noise maker attached to an extended elongated shaft, mounting brackets, and a bumper or tension strap for rapidly stopping the extended elongated shaft. Typically, the mounting brackets may be coupled to an existing standard percussion or similar foot pedal. The mounting brackets may also be configured so as to be coupled to a particular percussion foot pedal. A percussion foot pedal having an integrated noise maker stop assembly is also contemplated.
摘要:
The invention relates to a relay controller (500) for controlling an excitation current of a relay (300), wherein the relay controller (500) is designed, upon the energization of the relay (300) by means of a switch (210, 211, 221), to control the excitation current through the excitation winding (310) of the relay (300) in such a way that through the excitation winding (310) there flows firstly a pull-in current and, after a pull-in time has elapsed, through the excitation winding there flows a holding current that is lower than the pull-in current, and wherein the relay controller (500) is designed, upon the switching-off of the relay by means of the switch (210, 211, 221), to feed a commutation current that flows through the excitation winding (310) to the commutation device (400) through the first terminal (501) and through the second terminal (502) of the relay controller (500).
摘要:
A power supply circuit is disclosed herein comprising a load current path for connecting a load which has a switching element. The power supply circuit also includes a current sensor for providing a current measurement signal dependent on a current through the load current path. A drive circuit is also included which provides a clocked drive signal with a number of drive cycles, in each case having an on period and an off period, for the switching element. A temperature sensor arrangement with a temperature sensor is provided for determining an environmental temperature in the area of the temperature sensor, which provides a temperature measurement signal dependent on the environmental temperature. The clocked drive signal is dependent on the current measurement signal and the temperature measurement signal.
摘要:
A protection arrangement for a power semiconductor component made of a plurality of cells, in which a current sensor made of a current sense transistor and current sense resistors and also a temperature sensor, is disclosed. The current sense transistor and the temperature sensor are provided in a gap or in different gaps between the cells, while the current sense resistor is fitted directly on at least one cell. The temperature sensor may, include a plurality of stages which are located from the center of the power semiconductor component to an edge of the latter in the gap between two cells.
摘要:
A circuit arrangement includes a first switch device and at least a second switch device. The first switch device is operably coupled to alternately switch on and off a first operating current to a first light-emitting diode arrangement such that the first light-emitting diode arrangement has a first brightness. The second switch device is operably coupled to alternately switch on and off a second operating current to a second light-emitting diode arrangement such that the second light-emitting diode arrangement has a second brightness. The circuit arrangement further includes a logic device configured to control the first and second switch devices that the first and second switch devices do not both switch on simultaneously.
摘要:
A mounting method for a semiconductor component. The method includes application of solder material to the semiconductor component, application of at least one contact/mounting element made of semiconductor material and/or metal and/or insulator material to the solder material, heating of at least one part of the semiconductor component to a temperature lying above the melting point of the solder material by impressing an electrical power into the semiconductor component, as a result of which corresponding soldering connections arise between the semiconductor component and the at least one contact/mounting element, and cooling of the connection complex that comprises the semiconductor component and at least one contact/mounting element and was produced in the preceding step.
摘要:
In a method for operating a diesel engine and a diesel engine, wherein engine emission control is provided by switching between a lean mode with superstoichiometric combustion air ratio λ>1 and a rich mode with substoichiometric combustion air ratio λ
摘要:
An apparatus for killing insects, the apparatus including an electrical mechanism for killing insects, an inner shell, the inner shell being surrounded by the electrical mechanism, and a mosquito attracting device within the inner shell. The insect attracting device includes a fan, a heat source, and a source of CO2. The inner shell has a plurality of openings in the inner shell for ejecting heated air and CO2 from within the inner shell, the openings being formed by indentations in the surface of the inner shell, each indentation being open at one end so as to form an opening which lies substantially perpendicularly to the extending axis of the inner shell. The insect attracting device further includes a mechanism for closing the source of CO2 and for stopping the fan when the temperature within the inner shell goes below the temperature. The insect attracting device further includes a moisture source, and an insect attractant. The apparatus for killing insects also includes a mechanism for opening the source of CO2 and for starting the fan when the temperature within the inner shell reaches a certain temperature.
摘要:
The circuit configuration has a semiconductor switch and a driver circuit that drives the switch. A switching signal is applied at an input terminal of the driver circuit and an output terminal that is connected to a control input of the semiconductor switch outputs a drive signal. The drive signal depends on the switching signal and its gradient during a change from a first drive level to a second drive level is temperature-dependent.
摘要:
A regulator includes a first controllable semiconductor component, which has an input terminal connected to a regulator input, an output terminal connected to a regulator output, and a control terminal. A second semiconductor component is provided, which is connected to the control terminal of the first semiconductor component and has an input terminal, an output terminal and a control terminal. A comparison device that has a first input, a second input and an output connected to the control terminal of the second semiconductor component is further provided. A reference voltage can be applied to the first input of the comparison device and the second input is connected to the regulator output. A driver device, which, when a predetermined threshold value is exceeded by an input signal present at the regulator input, diverts part of the current from the control terminal of the first semiconductor component to the regulator output.