Abstract: A device for minimizing the current consumption of a motor vehicle generator from the battery during the starting phase of a motor vehicle, has a generator unit and a generator regulator. The generator regulator includes a regulator control, which has a unit for providing a first control signal having a fixedly specified pulse duty factor, a unit for providing a second control signal having a pulse duty factor that is a function of the excitation current, and a unit for selecting the control signal having the smaller of the two pulse duty factors, which is supplied to the output stage of the generator regulator as the control signal.

Abstract: A dip in the output voltage of a motor-vehicle alternator, owing to a connecting of a load or a change in speed, is compensated with the aid of an alternator regulator which provides a control signal that has a duty factor and increases the excitation current of the motor-vehicle alternator. After the occurrence of the voltage dip, in a first step, the duty factor of the control signal is increased by a differential amount, and in a subsequent second step, the rate of correction is limited. After the occurrence of the voltage dip, parameters describing the instantaneous working point of the motor-vehicle alternator are determined, and in the first step, the differential amount is set as a function of the working point.

Abstract: In order to inhibit thrombotic processes locally rather than systemically, higher levels of antithrombotic drugs in the deep veins of the legs than in the systemic circulation are obtained using devices and methods that provide venous cannulation in the dorsum of the foot of a patient while applying pressure to the foot proximal to the venous cannulation, potentially as far up the leg as the knee, in an amount sufficient to compress the superficial veins and divert the venous drainage in the deep venous system into the venous plexus.

Abstract: A device for detecting a change in a generator output signal of a vehicle generator includes a window comparator for comparing a signal amplitude of the generator output signal to at least one threshold value which limits a signal amplitude range, a detector for detecting a change in the generator output signal based on an output signal of the window comparator, a detection unit for detecting a signal amplitude difference between a maximum signal amplitude and a minimum signal amplitude of the generator output signal, and an adaptation unit for adapting the signal amplitude range of the window comparator, based on the signal amplitude difference, when there is the change in the generator output signal.

Abstract: A generator device with a generator regulator and a generator unit having a generator and a rectifier arrangement. The generator regulator has an operating voltage connection and a phase voltage connection. Furthermore, if during a control intervention of the phase voltage the DC voltage applied to the operating voltage connection exceeds a predefined limit for a predefined period of time, the generator regulator deactivates the control intervention of the phase voltage.

Abstract: A dip in the output voltage of a motor-vehicle alternator, owing to a connecting of a load or a change in speed, is compensated with the aid of an alternator regulator which provides a control signal that has a duty factor and increases the excitation current of the motor-vehicle alternator. After the occurrence of the voltage dip, in a first step, the duty factor of the control signal is increased by a differential amount, and in a subsequent second step, the rate of correction is limited. After the occurrence of the voltage dip, parameters describing the instantaneous working point of the motor-vehicle alternator are determined, and in the first step, the differential amount is set as a function of the working point.

Abstract: A device for minimizing the current consumption of a motor vehicle generator from the battery during the starting phase of a motor vehicle, has a generator unit and a generator regulator. The generator regulator includes a regulator control, which has a unit for providing a first control signal having a fixedly specified pulse duty factor, a unit for providing a second control signal having a pulse duty factor that is a function of the excitation current, and a unit for selecting the control signal having the smaller of the two pulse duty factors, which is supplied to the output stage of the generator regulator as the control signal.

Abstract: A device for detecting a change in a generator output signal of a vehicle generator includes a window comparator for comparing a signal amplitude of the generator output signal to at least one threshold value which limits a signal amplitude range, a detector for detecting a change in the generator output signal based on an output signal of the window comparator, a detection unit for detecting a signal amplitude difference between a maximum signal amplitude and a minimum signal amplitude of the generator output signal, and an adaptation unit for adapting the signal amplitude range of the window comparator, based on the signal amplitude difference, when there is the change in the generator output signal.

Abstract: A generator device with a generator regulator and a generator unit having a generator and a rectifier arrangement. The generator regulator has an operating voltage connection and a phase voltage connection. Furthermore, if during a control intervention of the phase voltage the DC voltage applied to the operating voltage connection exceeds a predefined limit for a predefined period of time, the generator regulator deactivates the control intervention of the phase voltage.

Abstract: Deep venous thombosis with the attendant risk of pulmonary embolism and post phlebitic syndrome is a frequent complication in older patients who have undergone surgery, suffered trauma or who have serious illness such as malignancy or sepsis. In any category patients who are 40 years of age or older are considered to be at greatest risk. Deep vein thrombi vary from a few millimeters in length to long tubular masses that partially or completely fill the deep main veins of the leg. These thrombi start as small nidi and initially grow in size by deposition of successive red and white layers. The white layers are rich in platelets and neutrophils interspersed with fibrin while the red layers contain most erythrocytes entrapped in fibrin (Hume et al, p. 26-30). Beyond a certain stage of growth venous thrombi become mostly red, resembling clotted blood, i.e., the bulk of a clinically significant thrombus is composed mostly of erythrocytes entrapped in fibrin.