摘要:
A method and a control unit (4) for controlling a supply of power to an electrical circuit comprising a switch (3). An output voltage of a first power source (5), which is connected to the circuit, is measured and compared to a predefined threshold voltage. If the measured voltage is smaller than the threshold value it is determined that the switch (3) is in a closed state, and if the voltage is larger than the threshold value it is determined that the switch (3) is in an open state. The supply of power is controlled in accordance with the open/closed state of the switch (3). Preferably, the electrical circuit is connected to a second power source (9) when the switch (3) is in a closed state. Power is conserved while it is ensured that sufficient power is available when needed. The invention is very suitable for supplying power to a lamp (1) positioned inside a refrigeration compartment (2), especially when the system is battery powered.
摘要:
A device for triggering an airbag device that is accommodated in a steering wheel is described. The device has a firing cap for an airbag device that is accommodated in a steering wheel and is fired by a light pulse that is supplied via an optical waveguide. A coupling device, which decouples the optical waveguide from the rotation of the steering wheel but ensures that the light pulse is transmitted into the firing cap from the optical waveguide and also ensures that the airbag is inflated by a gas generator, is provided between the optical waveguide and the airbag.
摘要:
The present invention relates to a connecting accessory 10 for fluorescentamps, comprising two lampholders 16 constructed separately from one another and mutually spaced for holding the corresponding connecting ends of the fluorescent lamp 14. In this case, the lampholders 16 are each arranged in a holder receptacle 18. Moreover, the holder receptacles 18 each have an integrated device for the strain relief of electric connecting lines 22 leading to a ballast or coming therefrom.
摘要:
The invention relates to the idea of not initially multiplying the output signal (a) of an acceleration sensor (19) with regard to a weighted sum (Σg) with a correction factor (kw) but to alter a test signal (t) by using a weighting means (16) in such a manner that an already weighted output signal (ag) can be generated so that during a test operation, the safing algorithm of an evaluating device can be directly fallen back upon, whereby this can be advantageously tested with regard to its ability to operate. The invention is particularly suited for occupant protection systems of a modern motor vehicle.
摘要:
A portion of the superconductor in a planar resonator made from that superconductor can be switched into the normally conducting state so that its effective lateral dimensions are changed. The special advantage of this planar resonator is that a switchable filter can be constructed very economically based on its planar resonator structure. Since no perturbing bodies are necessary in the field, the invention points the way to a switchable filter with reduced high frequency losses.
摘要:
The superconductor bandpass filter for electromagnetic signals includes a substrate (5); striplines (1) made of a type II superconductive material arranged on the substrate and a tuning device (2) for tuning the superconductor bandpass filter consisting of a device for changing a magnetic penetration depth .lambda.(T) of the striplines (1), so as to change the effective length, effective width and effective spacing of the striplines and thus to change the center frequency and/or the bandwidth. The device for changing the magnetic penetration depth .lambda.(T) of the striplines (1) advantageously includes a device for exerting a mechanical force or stress on the striplines and/or a device for varying a magnetic field applied to the striplines.
摘要:
The planar superconducting resonator includes a substrate (1), a symmetrically shaped stripline (2) applied to the substrate (1) in which two orthogonal electromagnetic modes are excitable and including a symmetry perturbation for coupling the two orthogonal electromagnetic modes, an additional stripline (5) arranged on the substrate in the vicinity of the symmetry perturbation, a Josephson junction (3) arranged between the symmetry perturbation and the additional stripline (5) and a device for generating and controlling a magnetic field at the Josephson junction (3) so that the degree of coupling between the two orthogonal electromagnetic modes is varied. The Josephson junction (3) is formed by a non-superconducting layer (4) arranged between the symmetry perturbation and the additional stripline (5).
摘要:
Motor start circuit for an induction motor, particularly a single phase AC induction motor, with a main winding (4) and an auxiliary winding (5) having two end connections (6, 7) supplied with current, mainly AC, via current supply connections (34, 35), and with a start circuit device (15) serving the purpose of stopping the current flow through the auxiliary winding (5) after the start of the motor, and being connected via a conductor (18) to a control device (20) connected between the current supply connections (34, 35), and with a preset timer device interacting with the start circuit device (15) to stop the current flow through the auxiliary winding (5), as soon as a predetermined period after the start of the current flow has lapsed. With the purpose of optimising the motor start circuit, a voltage presetting device (60), with which a predetermined voltage value can be set, the start circuit device (15) being disconnected if this value is exceeded, and a period duration presetting device (70), by means of which the predetermined period can be set, after the lapse of which the start circuit device (15) is turned off by means of the control device (20), are connected to or integrated in the control device (20).
摘要:
The invention concerns a motor starter circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5) supplied with current, particularly AC, via current supply connections (24, 25), and with a starter switch arrangement (15), which serves the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the starter switch arrangement (15) interacting with a measuring arrangement serving the purpose of measuring the voltage across the auxiliary winding (5).In order to optimise the motor starter circuit with regard to operation safety, a protection fuse (30) and a protection switch arrangement (47) are connected in series between the current supply connections (24, 25) so that, when the protection switch arrangement (47) is closed, the current flows in such a manner through the protection switch arrangement (47; 77) and the protection fuse (30) that the protection fuse (30) is triggered to interrupt the current flow.
摘要:
The invention relates to the idea of not initially multiplying the output signal (a) of an acceleration sensor (19) with regard to a weighted sum (Σg) with a correction factor (kw) but to alter a test signal (t) by using a weighting means (16) in such a manner that an already weighted output signal (ag) can be generated so that during a test operation, the safing algorithm of an evaluating device can be directly fallen back upon, whereby this can be advantageously tested with regard to its ability to operate. The invention is particularly suited for occupant protection systems of a modern motor vehicle.