The present application relates to current sensing circuitry (100) that comprises a differential amplifier (110) comprising first and second inputs configured to sense a current across a sense resistance, and an output configured to output a current sense signal. The circuitry (100) further comprises a first current source, a second current source and a switch network operable in: a first phase in which the first current source is connected to the first input and disconnected from the output, and the second current source is connected to the output and disconnected from the first input; and a second phase in which the first current source is connected to the output and disconnected from the first input, and the second current source is connected to the first input and disconnected from the output.

Herein is provided a device for optimizing bandwidth during oscilloscope measurements. The device is connectable to a probe for electrically connecting a test point and an oscilloscope. The device may include at least two grounding connectors with different inductances for electrically connecting ground to the probe and a tuning network comprising circuitry configured to compensate for the different inductances of said at least two grounding connectors, the tuning network being switchable between different modes, each mode being configured to compensate for a specific inductance of said at least two grounding connectors. A method for optimizing bandwidth during oscilloscope measurements is also provided.

A diagnostic circuit includes an input port configured to receive an input current and a first superconducting quantum interference device (SQUID) inductively coupled to the input port. The first SQUID is configured to generate a first output in the form of: a first voltage in response to the input current being less than a first threshold current and a second voltage in response to the input current being greater than the first threshold current. The diagnostic circuit also includes a second SQUID inductively coupled to the input port. The second SQUID is configured to generate a second output in the form of: a third voltage in response to the input current being less than a second threshold current and a fourth voltage in response to the input current being greater than the second threshold current.

To accurately detect the presence or absence of a signal. A signal detector includes an input-signal amplifying circuit, a reference-signal amplifying circuit, and a comparator. In the signal detector, the input-signal amplifying circuit amplifies an input signal with a predetermined gain. The reference-signal amplifying circuit amplifies a reference signal at a constant signal-level with a gain that substantially matches the predetermined gain. The comparator compares a signal level of the amplified input signal with a signal level of the amplified reference signal, and outputs the comparison result as a detection signal.

A device for detecting signal pulses in an analog measurement signal of a particle counter is disclosed. The device includes an AD converter and an evaluation unit, wherein the evaluation unit includes a slope evaluation unit, which determines signal pulses by evaluating the pulses between adjacent samples in the digital data stream of the AD converter in real time.

A sense circuit for a piezoresistive sensor is provided that comprises: an energy storage circuit coupled to the piezoresistive sensor via a first node; a charge control circuit coupled to the first node and configured to charge the energy storage circuit to a predetermined potential; a discharge control circuit configured to allow the energy storage circuit to discharge through the piezoresistive sensor; and a readout circuit coupled to the first node and configured to output a sensed voltage based on a level of charges stored by the energy storage circuit

A measurement apparatus is provided that measures a current signal I.sub.DUT that flows through a device under test. A transimpedance amplifier converts the current signal I.sub.DUT into a voltage signal V.sub.OUT. A digitizer converts the voltage signal V.sub.OUT into digital data D.sub.OUT. A digital signal processing unit performs signal processing on the digital data D.sub.OUT, and controls the measurement apparatus. The measurement apparatus has a configuration comprising two separate modules, i.e., a probe module which is located in the vicinity of the device under test during a measurement, and a backend module connected to the probe module via at least one cable. The transimpedance amplifier is built into the probe module. The digitizer and the digital signal processing unit are built into the backend module.

A method, comprises: receiving measured air pressure data from each air data probe on a vehicle; receiving a first set of data from at least one sensor system on the vehicle; determining predicted noise levels for each air data probe using a noise modelling system and the received first set of data; determining a transmission loss for each air data probe; determining if any air data probe is faulty by determining if an transmission loss of any of the air data probes is greater than a first threshold value, where an air data probe is deemed faulty if its transmission loss is greater than the first threshold value; and if the transmission loss of any of the air data probes is greater than the first threshold value, then generating a signal to indicated that at least one air data probe is faulty.

A method of detecting a relatively weak signal includes providing an oscillatory loop that can sustain oscillations, wherein the oscillatory loop has no more than one or an even-number of stages. The loop includes a first weakly bistable differential amplifier and a second weakly bistable differential amplifier. At least one of the first and second weakly bistable differential amplifiers is connected to a behavior perturbing coupling which is operative to introduce into the connected-to amplifier a behavior tipping signal where, even if the behavior tipping signal is much weaker than an oscillation of the one or multistage oscillatory loop, the relatively weak behavior tipping signal can nonetheless alter the oscillatory behavior of the multistage oscillatory loop in a distinguishable way. The system may be used for detecting outside a patient's body weak manifestations of internal nerve firings.

The disclosure relates to a lock-in amplifier comprising a plurality of channels (CH.sub.1-CH.sub.N), wherein each channel of the plurality of channels (CH.sub.1-CH.sub.N) is configured to receive an input signal (S.sub.in1-S.sub.inN) and generate at least one output signal (S.sub.out1-S.sub.outN), a synchronization unit (110) configured to synchronize the generated output signals (S.sub.out1-S.sub.outN) of the plurality of channels (CH.sub.1-CH.sub.N), an aggregation module (150) configured to receive the generated output signals (S.sub.out1-S.sub.outN) and generate an aggregated signal (S.sub.agg) based on the generated output signals (S.sub.out1-S.sub.outN).