Abstract: A membrane valve, with a valve housing, in which a housing interior is formed, in which housing interior a flexible control membrane is arranged. A drive plunger lies opposite a valve seat and the drive plunger has a shank body with a peripheral outer lateral surface. The outer lateral surface of the shank body of the drive plunger at least in the region of a guide section has a polygonally contoured prismatic shaping with a succession of outer side edges and outer side surfaces, wherein the edges and surfaces extend in the plunger longitudinal direction and the succession alternates in the circumferential direction of the drive plunger.

Abstract: An apparatus and a method for charging and for charge monitoring of a rechargeable battery. A charging circuit contains a rechargeable battery (B) and a charging device (L) for charging the rechargeable battery. A measurement device (M) is arranged in the charging circuit and contains a device for determining the rechargeable-battery current and the state of charge of the rechargeable battery. A control device (R) compares a value that is proportional to the rechargeable-battery current with a set value, and controls the charging device.

Abstract: A method includes a voltage converter outputting an output voltage that is based on an input voltage and on a first multiplication factor, determining a predicted current sink voltage based on a new multiplication factor obtained from a set of selectable values, based on a signal derived from the input voltage, based on a load voltage across an electrical load, and based on a correction voltage. The method also includes comparing a predicted current sink voltage with a predetermined threshold value and outputting the new multiplication factor to a control input of the voltage converter if the predicted current sink voltage exceeds the predetermined threshold value.

Abstract: An integrated circuit includes a comparator having a first input, a second input, and an output for providing a comparison result. The first input is connected to a readable component having a predefined value, and the second input is connected to a reference component. A control unit is at the output of the comparator. The control unit controls at least one function block based on the comparison result.

Abstract: The invention specifies an arrangement with a voltage converter (1) for supplying power to an electrical load (2) having a current sink (3), a prediction unit (5) and a comparator (6) and also an associated method. The voltage converter (1) can be connected to a voltage source and drives a series circuit which comprises a means for connecting the electrical load (2) and the current sink (3). The voltage at the output of the voltage converter (1) has a dependency on a multiplication factor. The prediction unit (5) ascertains a predicted current sink voltage, that is to say the voltage dropping across the current sink, for a new multiplication factor. The comparator forwards the new multiplication factor to the voltage converter if the predicted current sink voltage is higher than a prescribeable threshold value. The arrangement described is particularly well suited to supplying power to light emitting diodes.

Abstract: According to the suggested principle, a comparator (9) is provided in an integrated circuit (1), which reads out an externally attachable component (4) and compares the value with the value of a reference component (6). The comparison result is forwarded to a control unit (12) which addresses at least one function block (13a, 13b) of the integrated circuit arrangement (1) depending on the comparison result. Accordingly, the mode of operation of the chip (1) is determined by the value (Rprog) of the externally attachable component (4) and/or is programmed thereby. The suggested principle is applicable, for example, with Power Management Units.