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反馈电阻

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The restriction of equivalent transformation analysis method is discussed and finally a proper method and the result of the analysis are offered.

在单端输入的差动放大电路工作原理教学中,对共模反馈电阻R e的作用,往往采用等效变换法进行分析,如果不注意正确使用分析条件会得出错误的结论,本文从理论和实践上指出了利用这种分析方法分析单端输入差动放大电路的局限性,最后给出了正确的分析方法及结论。

Each DAC has an output amplifier and a feedback resistor.

每个DAC的输出放大器和反馈电阻

A feedback resistance communicates with the input and the output of the fourth OTA.

反馈电阻与第四OTA的输入和输出通信。

The circuit includes phase electric capacity, the feedback resistance and the input impedance. This signal frequency of this model is wide.

运算放大器扩展功能,在电子电路设计中其数学模型为放大电路,含移相电容、反馈电阻及输入阻抗。

When the voltage on the feedback resistance over the designed value, the inside protection circuit was operated and the output channels were cut in IR2132 to achieve current protection.

电流在反馈电阻上产生的电压超出设定值时,IR2132启动内部保护电路,关断输出通道,实现电流保护。

NIICP can optimize the openloop gain to reduce intrinsic noise in the lower magnification and to recover high frequency signal damped down by the low pass transfer function of large feedback resistance and parasitic capacitance in the higher magnification.

在较低放大倍率时,改变开环增益后放大器会降低自身产生的噪声,实现低噪声;在较高放大倍率时,改变开环增益后放大器能扩展被极高阻值的反馈电阻和寄生电容降低的信号带宽。

The test result showed that the preamplifier could work at the temperature of 100K, its feedback resistance was about 10^6Ω, the equivalent input noise current was 0.03pA/Hz(superscript 1/2) and the power consumption of one cell was less than 1mW. This preamplifier could work well when connected with JR detectors, and the system had good linearity.

经测试,这种前置放大器在深低温下能正常工作,反馈电阻大小为兆欧级,等效输入噪声电流仅0.03pA/Hz(上标 1/2),单元功耗小于1mW,与红外探测器连接后工作正常,线性度较好。

A digital AGC circuit using a digital potentiometer to rep lace the feedback resistance of the amp lifierwas designed. In order to get an app rop riate gain, MCU adjusted the resistance of the digital potentiometer automatically according to the voltage value of amp lifierps output.

为使输入信号不受这一限制,设计了一种数字式自动增益放大电路,该电路采用数字电位器取代放大器的反馈电阻,单片机根据放大器输出电压自动调整数字电位器的阻值来调节放大器增益,使输出电压始终维持在所设定的上下限电压之间。

Because the input and output resistance of the CMOS complementary amplifier decreases owing to the negative feedback resistor,the voltage swings are reduced,and the response time of the current comparator is short and the speed is fast.

由于CMOS互补放大器的负反馈电阻降低了它的输入、输出阻抗,从而使电压的变化幅度减小,所以该电流比较器具有较短的瞬态响应时间和较快的速度。

Next, the following points are emphasized:(1) The design of photoelectric conversion preamplifier circuit. In order to improve the measurement accuracy of luminometer and ensure linear relationship of the photoelectric, operational amplifiers is designed as current-voltage converter form, on the one hand, it is available to zero-load effect; on the other hand, short-circuit current can be transformed into a voltage volume through the feedback resistor, it is equivalent to voltage drop flowed through a load resistor on the actual effect.

其次,本文重点做了以下工作:(1)光电转换前置放大电路的设计:为了提高照度计的测量准确度,确保光电间的线性关系,本设计把运算放大器接成电流电压变换器的形式,一方面可得到零负载效应;另一方面,短路电流通过反馈电阻变成电压量,实际效果相当于流过一个负载电阻形成的压降。

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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?