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A delta-sigma modulator according to the present technology includes an integrator that generates an output voltage by integrating a first voltage and a second voltage, which are differential voltages; and a quantizer that outputs a bit stream signal according to the output voltage, wherein the integrator operates as a first mode integrator or a second mode integrator with different gains by changing its internal circuit structure according to the mode signal.

本实用新型提供一种基于霍尔原理的防水开关，包括PCB板、霍尔传感器、壳体、按键弹片、按键和盖板，霍尔传感器安装在PCB板上，PCB板固定在壳体的下端，壳体的上端沿长度方向设有安装槽，安装槽内设有若干安装孔，按键和按键弹片上下依次嵌设在安装孔内，按键内部设有磁铁，磁铁和霍尔传感器上下一一对应设置，磁铁的中心轴线与霍尔传感器的中心轴线重合，盖板设有若干通孔，盖板通过按键和通孔配合覆盖在安装槽上；采用霍尔传感器与按键磁铁配合，结合弹片的复位作用，确保开关按压迅速响应、及时复位；通过盖板与壳体的槽型密封设计，阻挡水汽、灰尘进入开关内部，提升防水防尘能力。

A device is provided herein. The device includes a signal input, an operational amplifier (op-amp) comprising a non-inverting op-amp input, an inverting op-amp input, and an op-amp output, a summer coupled to the op-amp output, a second summer input coupled to the signal input, and a summer output, and a low-pass filter comprising a low-pass filter input coupled to the summer output and a low-pass filter output coupled to the inverting op-amp input. The device processes electrophysiology signals by combining feedforward and feedback paths to achieve DC offset and low-frequency interference rejection while maintaining high input impedance and signal amplification.

Methods and systems for compressing sparse multidimensional ordered series data. The data may include indexed data sets events, where each data set comprises an index, and a set of second parameter variables. The methods and systems are particularly suited for compression of data recorded in double precision floating point format. In some examples, the methods are tailored for compression of analytical data, such as spectroscopic data or flow cytometry data.

An apparatus for analog-to-digital conversion comprising a first module with a comparator and digital-to-analog converters, and a second module with an amplifier. The apparatus implements input chopping by connecting capacitors to differential inputs through switches, and output chopping via an output chopper. Dynamic refresh is achieved using a switch to periodically connect differential inputs to a voltage reference. The apparatus further incorporates digital common-mode rejection ratio (CMRR) enhancement by processing signals from pseudo-differential first stage analog-to-digital converters.

A solid-state circuit breaker is configured to reduce an open circuit breaker voltage in a way to lower a load side voltage at a Standby state without increasing On state power loss. It comprises an integral airgap in series with main power electronics components, at least one of a pull-down resistor or a pull-down resistance as a parasitic resistance, and standby switching components. It has four possible states of operation including On, Off, Trip and Standby states. The pull-down resistor and the standby switching components are configured to reduce the open circuit breaker voltage. In the On state, when the main power electronics components are On, the standby switching components are turned Off so no current can flow through the pull-down resistor. In the Standby state when the main power electronics components are Off, the standby switching components are turned On, the pull-down resistor can lower a load side voltage.

本申请涉及集成电路技术领域，公开了一种双模比较器的失调校准电路，在高速模式下，通过辅助晶体管提高放电速度，并且在输出节点进行差分电流注入消除失调。在低噪声模式下，通过负载电容增加了时间常数，延长积分时间并降低热噪声。并且，在当模式切换时通过调整差分电流注入的大小来实现自适应失调调节。

本发明属于传感器技术领域，公开了一种接近开关传感器及控制装置、控制设备和方法，所述接近开关传感器控制装置包括感应线圈、磁性增强元件与开关元件，磁性增强元件为贴附于所述感应线圈一面的软磁性部件，开关元件与感应线圈串联。本发明解决在金属目标物与接近开关传感器均不移动的情况下，无法通过改变目标物涡流效应来控制传感器输出通断的问题。