电路

SINGLE SHOT MULTIVIBRATOR, An electrical circuit

输人信号触发电路时产生的脉冲的电路。

Summary This paper analyzes the working principle and stability of a transistor mul- tivibrator operating as a frequency divider,with both sides being synchronized by the input signal.It is found that the frequency division stability of this circuit can further be increased when the multivibrator operates in the second class of oscillating condition,and that the optimum operating point is best determined from the actual base voltage changing characteristic.

本文分析了晶体管自激多谐振荡器用作双侧同步分频电路的一般理论和分频稳定性，并考虑基极电压变化规律来确定最佳分频的工作状态和运用点，同时对同步脉冲的引入问题亦作了原理性补充，还提出了振荡于第二类状态下的自激多谐振荡器可获得高稳定性的分频，以及此类双侧同步分频电路的设计方法。

The circuits, including 4 value TTL, NOR gate and NAND gate and AND OR NOT gate and five state gate, are designed by use of bipolar transistors. They have good I/O characteristics, great load capacity and robust noise immunity, and their noise margin may reach±0.6V.

采用双极型晶体管设计出了四值TTL"或非"门、"与非"门和"与或非"门电路及五态门，这些电路均具有较好的输入输出特性、较强的负载能力和抗干扰能力，噪声容限可达到± 0 。6V。

The parameters (natural frequency and quality factor) of the filter can ...

对提出的电路进行了计算机模拟，结果证明提出的电路是正确的。

The circuit comprises a comparison circuit, a negation gate and a first coincidence gate, wherein the comparison circuit is used to output read screen signals of a storage unit corresponding with bus signals of a second port address, the negation gate is used to inverse the read screen signals of the storage unit which are corresponding with the bus signals of the second port address, one input end of the first coincidence gate receives the read screen signals of the storage unit which are corresponding with the bus signals of the second port address after being inversed, the other input end of the first coincidence gate receives the read enable signals of a second port, and the output end of the first coincidence gate is connected with the read enable end of the second port.

所述电路包括：比较电路，用于输出第二端口地址总线信号对应的存储单元读屏蔽信号；非门，用于对第二端口地址总线信号对应的存储单元读屏蔽信号进行非运算；第一与门，第一与门的一路输入端接收非运算后的第二端口地址总线信号对应的存储单元读屏蔽信号，第一与门的另一路输入端接收第二端口的读使能信号，第一与门的输出端连接第二端口的读使能端。

Beijing 100084, China Abstract: The nephogram signal of FY-2B meteorological satellite is a burst QPSK modulated carrier, and the effect of the special preamble on the carrier recovery loop is analyzed in this paper.

摘 要："风云二号B星"气象卫星的原始云图数据是时分复用的突发载波调制信号，本文就其特殊的预告码对于载波恢复电路捕捉性能的影响进行了分析，并对具有不同类型和带宽的低通滤波器的载波恢复电路性能进行了仿真。

The nephogram signal of FY-2B meteorological satellite is a burst QPSK modulated carrier, and the effect of the special preamble on the carrier recovery loop is analyzed in this paper.

摘 要："风云二号B星"气象卫星的原始云图数据是时分复用的突发载波调制信号，本文就其特殊的预告码对于载波恢复电路捕捉性能的影响进行了分析，并对具有不同类型和带宽的低通滤波器的载波恢复电路性能进行了仿真。

This noise generator used the new FPGA device, and we made use of some given functions from the device to reduce the design difficulty. This generator improved the agility of circuit debugging, and it can be used in the testing of communication system under many circumstances.

这种噪声生成器与传统数字电路所组成的噪声生成器相比，采用了新型的FPGA器件，通过利用其中的一些既有功能大大降低了设计的难度，提高了电路调试的灵活性，可用于多种环境下的通信系统测试。

Two new circuit techniques to suppress leakage currents and enhance noise immunity while decreasing the active power are proposed.

提出了两种新的电路技术，在降低多输入多米诺"或门"的动态功耗的同时减小了漏电流，并提高了电路的噪声容限。

The photocurrent density increases exponentially with the incident light power. After every kind of pixel unit circuit was introduced, the new pixel unit circuit for BJPHGT was brought forward and its noisiness was analyzed.

介绍了CMOS图像像素采集单元的各种电路形式，提出了针对双极光栅晶体管的新型像素单元电路并对其噪声特性进行了分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。