The parameters of electronic components can be changed due to the variation of ambience temperature, and that can bring the output variation of capacitance sensor circuit. 电子元器件的参数会随环境温度波动而变化,从而引起电容传感电路的输出发生变化。
For example, the peak at20 MHz in the spectrum is caused by the parasitic oscillation due to the output capacitance of the MOSFET and the leakage inductance of the transformer. 举例说明,20兆赫兹的峰点是钳位过程结束后主要由场效应晶体管输出电容和变压器漏感引起的寄生振荡产生的。
The structure parameters were theoretically calculated, and the output capacitance of this device was given by FEA ( Finite Element Analysis) methods. 理论计算了传感器的结构尺寸并利用有限元分析方法计算了传感器的电容输出。
Through the thyristor operation capacitors to tune arc suppression coil inductance value, we can control the inductance current output, which compensate the earthing fault capacitance current. 通过晶闸管开关电容灵活调节消弧线圈补偿电感量,控制电感电流输出,来补偿故障接地电容电流;
The key part of the system namely the measurement of the output capacitance of the capacitor sensor has been expatiated and compared, according to the characteristics of every kind of methods, charge/ discharge method has been adopted. 对系统的关键部分即电容传感器的输出电容的检测方法进行了阐述和比较,针对各种方法的特点,确定本系统采用充/放电法进行检测。
The output of capacitance grid transducer and the testing displacement share pro rata. 容栅传感器输出信号的相位变化量与被测位移成比例。
The maximum output short-circuit discharged energy is deduced, and the output equivalent capacitance of switching converters is obtained. 根据开关变换器的最大输出短路释放能量,得出了变换器的输出短路等效电容。
It was considered that the main factors affecting on the strength coat thickness are the output voltage of capacitor, the capacitance of charge capacitor, strength ratio time, flux of protective gas and electrode rotate speed. 认为电容两端输出电压、充电电容量、比强化时间、保护气体流量、电极旋转速度是影响强化层厚度的主要因素。
The model has a driver, which comprises an output resistance and capacitance, and a capacitive load. 该模型的驱动器由输出电阻和电容组成,负载为容性负载。
When AC signal of microsyn output was demodulated to DC output, distribution capacitance may cause DC output self excitation. 在交流信号被解调成直流输出时,分布电容易引起输出级自激。
In order to improve the dynamic response character and interference rejection ability, voltage outer loop includes the feedforward of load current and output filtering capacitance current decouple component. Current inner loop includes the feedforward of output voltage and output filtering inductance voltage decouple component. 为了提高系统的动态响应特性及抗扰能力,电压外环包含了负载电流前馈及输出滤波电容电流解耦,电流内环包含了输出电压前馈及输出滤波电感电压解耦。
The circuit has two output modes. The change of differential capacitance, which carries the acceleration, can be denoted by analog level and pulse duty factor. 该电路具有模拟和脉宽调制两种输出方式,能够将差分电容的变化通过模拟电平和输出脉冲信号的占空比表征,实现了对差分电容式加速度传感器信号的测量。
How to improve the sensitivity of the measurement circuit and linearity of the sensor within its full-scale will influence the performance of the sensor in respect that the discriminable output capacitance of microsensors is much less than IFF. 由于微传感器的测量分辨输出电容很小,远远小于皮法,如何提高小电容的测量电路的灵敏度和改善全量程测试中的非线性直接影响传感器的性能。
Optimization of Output Capacitance for Reducing the Energy Loss during MOSFET Turn-on 减少MOSFET开通损耗的输出电容优化曲线的研究
Stabilization of the Quiescent Output of Capacitance Fuze Detectors 稳定电容引信探测器静态输出的方法研究
Output voltage ripple analysis and filtering capacitance determination of the PFC circuits using boost 采用Boost的PFC电路输出电压纹波分析及输出滤波电容值的确定
Using the nullor model in an active SCN, it is easy to obtain the adjoint-network by changing the SCN to SC-nullor network, and then calculation formulae of sensitivities of output with each capacitance are derived. 对于有源SCN,引入nullor模型后,SCN转变成SC-nullor网络,就很容易得到原网络的伴随网络,从而推导出输出量对各电容的灵敏度计算公式。
However, the parasitic output capacitance of LDMOS will directly affect its output characteristics, including power gain, power-added efficiency, and so on, especially, can make the design of output matching harder. 然而LDMOS的寄生输出电容又会直接影响器件的输出特性,包括功率增益、附加功率效率等,使输出匹配的设计更为困难。
Because of parasitic capacitance, production technology, output of measure circuit and capacitance are non-linear, capacitive sensor measurement range has been greatly restricted. 但由于寄生电容,生产工艺,电容检测电路输出信号与电容大小呈现非线性等影响,使得电容式传感器的分辨率和测量范围受到很大的限制。
The capacitance sensor has a "soft field" effect, so the output capacitor capacitance sensor and the pipeline between the internal fluid is not a linear relationship. 由于电容传感器具有软场效应,所以电容传感器输出电容与管道内部流体之间不具有线性关系。
The performance of each circuit on noise, output stability and rejection to stray capacitance is compared. 对电路噪声、长时间稳定性及分布电容的抑制能力等性能进行了测试。
PWM and counter measure the period of relaxation oscillator output, by which the capacitance variation of sensor can be calculated. 脉冲宽度调制器和计数器用来测量弛张振荡器输出信号的周期,以确定传感器电容的变化值。
Measurement system software is mainly to receive output signals of the capacitance detection circuit and temperature detection circuit, save the results after modulus converting, through the communication interface to the computer for processing the experiment data. 4. 测量系统软件即单片机系统软件设计,主要是对电容检测电路和温度检测电路输出信号的接收、进行模数转换后保存结果,并将结果通过通讯接口传给计算机以进行测量数据的处理。
Based on the formulae, sensitivities of the output with respect to the capacitance are computed, which are simulated by the practical examples. 最后根据灵敏度计算公式求解输出量对各电容的灵敏度,并给出了实例仿真以及对结果的验证。
By simulating, we found that the device has good characteristics of DC output, lower parasitic capacitance, and higher cut-off frequency. 模拟发现,器件具有较好的直流输出特性,较低的寄生电容,较高的截止频率。
In other words, the output storage capacitance can be reduced with the same output voltage ripple. 在输出电压脉动相同的情况下,可以减小输出储能电容。
The design of hardware is focus on the main power stages, at the same time it analyzes the influence from output capacitance and ignition transformer inductor. 其中,硬件设计集中在主功率电路部分,其中就输出电容、点火变压器电感对灯启动性能的影响进行了分析。