Abstract: The invention relates to an electronic component that can be operated by means of an alternating voltage. Said component includes at least one input, at least one output and a pair of electronic sub-components with an identical function. The input(s) of the electronic component is/are coupled to a respective input of the electronic sub-components with an identical function and the output(s) of the electronic component is/are coupled to a respective output of said electronic sub-components. In addition, the electronic component is configured in such a way that at least one output only one output signal of the first sub-component of the pair of functionally identical electronic components can be picked up during a first half-wave of an alternating voltage, whereas only one output signal of the second sub-component of the pair of functionally identical electronic can be picked up during the second half-wave of the alternating voltage.

Abstract: An identification data carrier has a substrate as well as a resonant circuit structure, which is formed on or in the substrate, for an electromagnetic resonant circuit. The resonant circuit structure has a resonant frequency which is specific for an object to be identified. A read apparatus for reading object-specific information which is contained in an identification data carrier has, an electromagnetic radiation source for emission of electromagnetic energy in a predeterminable frequency range, a detection device for detection of the electromagnetic energy which is absorbed by a resonant circuit structure of the identification data carrier at different frequencies in the frequency range, and for determination of the value of the resonant frequency of the resonant circuit structure, a determination device for determination of the object-specific information which is contained in the identification data carrier, from the value of the resonant frequency of the resonant circuit structure.

Abstract: The invention relates to an electronic component that can be operated by means of an alternating voltage. Said component includes at least one input, at least one output and a pair of electronic sub-components with an identical function. The input(s) of the electronic component is/are coupled to a respective input of the electronic sub-components with an identical function and the output(s) of the electronic component is/are coupled to a respective output of said electronic sub-components. In addition, the electronic component is configured in such a way that at least one output only one output signal of the first sub-component of the pair of functionally identical electronic components can be picked up during a first half-wave of an alternating voltage, whereas only one output signal of the second sub-component of the pair of functionally identical electronic can be picked up during the second half-wave of the alternating voltage.