摘要:
Method for detecting macromolecular biopolymers using a unit for immobilizing macromolecular biopolymers, in which the unit is provided with first molecules serving as capture molecules. The method includes the steps of bringing a sample into contact with the unit, it being possible for the sample to contain the macromolecular biopolymers, and the macromolecular biopolymers or the first molecules having a marking which is used to generate a detectable signal, binding macromolecular biopolymers contained in the sample to the capture molecules, thereby forming complexes comprising capture molecules and macromolecular biopolymers, exciting the emission of a signal by means of the marking, detecting the signal emitted by means of the marking, separating the complexes comprising capture molecules and macromolecular biopolymers, thereby altering the intensity of the emitted signal, and detecting the separation of the complexes comprising capture molecules and macromolecular biopolymers by means of the change in the intensity of the signal.
摘要:
The invention relates to a current sample-and-hold circuit comprising several sub-circuits, in which a current signal is stored. At least one of said sub-circuits contains a switch. The inventive current hold-and-sample circuit is characterized in that each of the sub-circuits contains a linear resistor, which is connected in such a way that the current signal generates a voltage drop across the resistor, that each of the sub-circuits contains at least one inverting control amplifier, which sets an initial current of the circuit in a hold operational mode, thus inducing a voltage drop across the resistor, said voltage drop being substantially as great as the voltage drop across the resistor before the hold operational mode.
摘要:
The invention relates to an analog-to-digital converter (301), comprising several comparators (303) and a reference network, said reference network having several reference elements (302). At least one input (304) of at least one comparator (303) is connected between the individual reference elements (302) of the reference network in the analog-to-digital converter (301), respectively. A digital evaluation circuit (311) with which the statistical evaluation of the output signals generated by the comparators (303) can be carried out is linked to the outputs (309) of the comparators of the analog-to-digital converter (301). The invention also relates to a corresponding method for converting an analog signal (Ua) into a digital signal (D).
摘要:
In a device for detecting thermal radiation, at least one membrane is provided on which at least one thermal detector element is mounted for the conversion of the thermal radiation into an electric signal and at least one circuit support for carrying the membrane and for carrying at least one readout circuit for reading out the electrical signal, the detector element and the readout circuit being connected together electrically by an electric contact which passes through the membrane. In addition, a method of producing the device with the following method steps is provided: a) provision of the membrane with the detector element and of at least one electrical through-connection and provision of the circuit support and b) bringing together the membrane and the circuit support in such a manner that the detector element and the readout circuit are connected together electrically by an electrical contact passing through the membrane. Production activity is preferably carried out at wafer level: functionalised silicon substrates are stacked upon one another, firmly bonded to one another and then divided into individual elements. Preferably, the detector elements comprise of pyro-electrical detector elements. The device finds application in motion detectors, presence detectors and in thermal imaging cameras.
摘要:
A driver circuit which has one or more driver transistors connected to a load and which further includes at least one circuit block configured to control the voltage on the gate nodes of the one or more driver transistors and which is connected to the latter. The gate source voltage of the one or more driver transistors can be controlled, using an appropriate configuration of the circuit blocks in relation to the circuit, by the application of the current in such a way that the charging/discharging current is approximately sine2. The circuit block has a current source that controls the gate voltage on the gate nodes of the one or more driver transistors and the circuit block as an additional first voltage source that provides the operating voltage of the driver circuit, in addition to a second voltage source that provides a control voltage which is used to adapt the driver circuit to different load magnitudes.
摘要:
A sensor arrangement including a control circuit is disclosed. In at least one embodiment, at least one sensor electrode can be charged and/or discharged therewith and a comparator unit for the comparison of a provided voltage for the at least one electrode with a reference voltage. A duration necessary for the charging/discharging of the at least one sensor electrode is determined, whereby, from the determined duration, it is determined whether a sensor event, in the form of a hybridisation between trap molecules and the particles for recording, has occurred.
摘要:
A circuit arrangement is disclosed. The circuit arrangement includes a substrate, at least one sensor array arranged on and/or in the substrate, and at least one operating circuit integrated on and/or in the substrate and serving for driving the at least one sensor array. The operating circuit and the sensor array are arranged in a manner spatially separate from one another.
摘要:
A sensor element is for detecting DNA single strands which are possibly contained in an analyte. The sensor element includes a substrate and at least two electrodes in and/or on the substrate. In a surface area of the substrate, catcher molecules are immobilized and are adapted to hybridize to DNA single strands that are possibly contained in an analyte. The DNA single strands include a label that has dielectric properties that are different from those of the analyte. The electrodes are coupled to a detection device for detecting a change in the capacitative portion of the impedance between the electrodes due to a label that is present in an area surrounding the electrodes as a result of the hybridization event.
摘要:
The invention relates to a driver circuit (10) for integrated circuits comprising at least one input node (11) for an input signal and at least one output node (12) for an output signal. One or several, preferably two partial drivers (20, 30) supply approximately sine-wave shaped current to the load capacity (15) thereby improving electromagnetic compatibility. A feedback circuit (40) is also provided. Said feedback circuit consists of one or several evaluation circuits (50) and one or several feedback capacitors (41). The evaluation circuits (50) are connected to the partial drivers (20, 30) One feedback capacitor (41, 42) is respectively arranged between an output node (12) of the driver circuit (10) and an input node (51) of an evaluation circuit (50). An evaluation circuit (50) is provided via the feedback condenser (41, 42) between an output node (12) of the driver circuit and an input node (51). The edge steepness of the signal i.e. current which is independent of the actual load, can be produced by means of a feedback circuit (40). The feedback capacitor (41) can, for example, be embodied as a non-linear capacitor.
摘要:
In a first phase a first sensor signal, essentially comprising the current offset signal of the sensor, is applied to the input of an electronic circuit. The first sensor signal is fed to a first signal path and stored therein. In a second phase a second sensor signal, comprising the current offset signal and a time-dependent measured signal, is applied to the input and the stored first sensor signal is fed to the input by means of the first signal path, such that essentially the time dependent measured signal is fed by means of a second signal path coupled to the input.