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This article oppugns popular electrocircuit operations of checking audion and functions of Chonghong RZ118A eliminating -light circuit and pro-poses checking method of body resistance separate-pres-sure partial setting so as to attaint elements when check-ing.

对流行的检测三极管电路操作及长虹R2118A消亮电路作用提出质疑,建议采用人体电阻分压式偏置方式检测,避免测量过程对元件的损坏,其次对电视消亮电路提出了自己的见解。

The key part of light alarm circuit of the system is the flashing tube and the life level of the main charge and discharge capacitance. Thus ,in this design, adopted autotransformer step-up type, two-level filter and double flashing tube, in order to light the burden of the main charge and discharge capacitance, reduce the heat productivity and extend the life level of the capacitance.

在系统的光报警电路中关键部件是频闪管和主充放电容的寿命,因此在电路设计中采用自耦变压器升压方式和双级滤波、双频闪管等独特的电路结构,减轻主充放电容的负担,减少发热量,延长电容使用寿命。

The experimental results have shown that the impact of TFT threshold-voltage variation on the biasing circuit can be reduced from 30% to 5% under biasing voltage of 3 V.

因此,在第六章中,本论文提出具有临界电压补偿功能之偏压电路设计技术,此技术可以大幅降低元件的变动对偏压电路的影响,提高类比电路在玻璃基板上之可行性。

The sensitive amplifier has a circuit with simple structure, small occupied area, high read speed, low dynamic power, wide range of operation voltage and almost-zero static power and does not need a biasing circuit; the read circuit formed by the sensitive amplifier has the characteristics of anti-degradation of the properties of elements and stable performance.

该灵敏放大器电路结构简单,不需要偏置电路,占用面积小,读取速度快,动态功耗低,静态功耗几乎为0;工作电压范围大;由上述的灵敏放大器构成的读电路具有抗器件特性退化,性能稳定的特点。

The dual-band differential LNA use Inductive source degeneration structure, a matching network is used for the LNA to develop dual-band. The micro-mixer use a matching network shunt and parallel LC elements to develop wide-band matching. The biasing method reduces the"voltage headroom" difficulties inherent to the Gilbert cell, and the mixer linearity can be improved using this biasing method "Charge -Injection"by accurate adjustment of the input MOSFET operating point. The complementary VCO based on 2.5GHz, and tuning output buffer to approach 2GHz/5GHz dual-band for dual-band down-converter with MMIC technology.

其中双频差动低杂讯放大器,本电路用Inductive Source Degeneration 架构,在匹配网上设计,使低杂讯放大器工作在个频带上达成双频带的效果;CMOS 微混频器上采用LC串联、并联电路做匹配,达到宽频匹配的效果,并加入了"Charge-Injection"的方法来改善"voltage headroom"的问题,并同时提高线性度的表现;互补式压控振荡器以2.5GHz为基频的振荡器为出发点,透过电路的调整,以期达成2.5/5GHz的双频带需求,能够完整达成双频带接收机系统。

We proposed the simplest structure of 2-D bilinear transformation digital circuit, we proposed four approaches of the realizations:(1) Realization of 2-D discrete domain difference equations;(2) 2-D FFT realization;(3) Digital hardware implementation;(4) by 2-D recursive digital structure to realize them.

在第七章,我们则重点研究了二维数字滤波器的实现问题。我们对第六章提出的2-D双线性变换电路又作了进一步的简化,获得了一种最简结构的二维双线性变换数字电路,该电路仅有二个延时器和一个乘法器。在第七章里,我们提出了二维跳耦型数字滤波器的四种实现方法:(1)二维时域差分方程实现;(2)二维FFT实现;(3)数字硬件实现,(4)用2-D递归数字结构实现。

The working process , the principle and the parameter calculation method of the Undeland buffer circuit .

分析了Undeland 缓冲电路的工作过程及原理,并介绍了缓冲电路参数计算方法,最后用仿真的方法验证了电路的缓冲效果。

One of the driving circuit switching power supply, buffer circuit, the main control circuit and magnetic components to optimize the design.

其中,对开关电源的驱动电路、缓冲电路、控制电路及主要磁元件进行优化、设计。

The paper analyses the working process and the principle of undeland buffer circuit ,introduces the calculating method of parameter of buffer circuit ,and proves the effect of the circuit buffer by simulation.

分析了Undeland 缓冲电路的工作过程及原理,介绍了缓冲电路参数计算方法,最后用仿真的方法验证了电路的缓冲效果。

In this paper,first,we analyse and design the main circuits of the power supply,and we explain how to use the three-phase spwm wave generator SA4828,and then we also explain the IGBT drive module EXB841,after that,we discuss the IGBT buffer circuit and the protective circuits of the system.finally,we discuss the process of the software design.

在本文中,我们首先对电源主电路进行分析与设计,然后对SA4828三相SPWM波发生器的使用和编程进行了介绍,还对IGBT驱动模块EXB841进行了介绍,另外,我们还讨论了IGBT管的缓冲电路和系统的保护电路,同时分析了系统的软件设计过程。

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