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If the required LO is beyond oscillation limits, or the system calls for an external LO, the external signal can be injected at Pin 6 through a DC blocking capacitor.

假如所需要的 LO 达到振荡极限，或者系统使用外部的 LO，外部信号可通过一个 DC 隔直电容注入脚 6。

The converter can be improved just by exchanging the position of the resonant inductance and the transformer such that the transformer is connected with the lagging leg. The improved converter has several advantages over its counterpart, e.g., the clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. The operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. The effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined.The improved converter is adopted to design the DC/DC converter of secondary power supply in HVDC power system.

本文将谐振电感和变压器交换位置，使变压器与滞后桥臂相连，这样箝位二极管在一个开关周期中只导通一次，同时零状态时谐振电感电流较小，有利于提高变换效率和减小占空比丢失，本文分析改进后变换器的工作原理，并与改进前的变换器进行对比，讨论隔直电容在不同位置对变换器工作的影响，确定一种最佳工程方案。

The converter combines the advantages of the PWM technique and soft-switching technique, the PWM is effected all over the whole loads range, and soft-switching is effeted only in the switching transition period, the ZVS of leading-leg is achieved by using the energy stored in leakage inductor of the transformer and the output inductor, the ZCS of lagging-leg is achieved by using a blocking DC capacitor, the ZVS and ZCS are achieved for the whole load ranges (5A~250A).

控制电路采用相移控制方式，综合了PWM控制和软开关技术的优点，在大范围内实现PWM控制，而在功率器件换流期间实现软开关换流，其中超前桥臂利用变压器的漏感，实现了零电压开关，滞后桥臂利用隔直电容，实现了零电流开关，并且整个变换电路能在（5A~250A）的范围内实现软开关工作条件，满足弧焊电源负载变化大的特点。

Shortly after replacing the battery if there is the same phenomenon, then the most likely leakage is the main board, to check whether there is any damage to the motherboard of the diode or capacitor, or use an external battery to resolve this issue.

如果更换电池后不久又出现同样现象的话，则极有可能是主板漏电，可检查主板上是否有损坏的二极管或电容，或是使用外接电池的方法来解决。

The brownout detect comparator has a detect threshold voltage of 1.21 V. This pin senses the voltage of the bulk capacitor through a resistor divider network to determine the brownout event.

掉电检测的比较有一个电压检测阈值的1.21五，该引脚通过一个电阻分压器感官网络上的大电容电压来确定掉电事件。

The resistance products have various types, and are for different lightning arrester, restrictive transformer, capacitor, electric machinery, vacuum switch, transformer neutral point sealed electrical instruments, cable, and railway line overvoltage.

本公司电阻片生产引进日立公司最新配方，工艺装备齐全、先进，采用全自动双向压制，四条窑炉烧制（排胶——预烧——烧成——热处理），侧面绝缘采用无机高阻层与有机绝缘漆相结合，检测设备齐全、准确，保证了电阻片具备优良的性能，各项指标明显优于GB11032标准。

Furthermore, calibration capabilities for the capacitance to a calculable capacitor and towards a Quantum-Hall resistance are improved.

此外，计算电容的校准能力和量子霍尔电阻均有所改进。

On the basis of the above results of detecting methods, the instruction signal calculating circuit is designed according to i〓, i〓 calculating mode. Compensation current generating circuit is also designed and implemented. Its current following circuit is designed according to the instantaneous value comparing mode that used constant time control. The source current detection based control mode and composite control mode and their implementation are firstly introduced in our country. The method and the principle of dc side capacitor voltage control are explained clearly.

根据检测方法的研究成果，采用i〓、i〓运算方式构成并联型电力有源滤波器的指令电流运算电路；对补偿电流发生电路进行了电路设计和实施，其中电流跟踪控制电路采用电流跟随性能好、可靠性高的定时控制瞬时值比较方式；在国内首次研究并实施检测电源电流控制方式和复合控制方式；清楚地阐明了并联型电力有源滤波器直流侧电压控制的原理和方法，并在装置中实施。

If the DC load is very demanding of a smooth supply voltage, a 稳压器 may be used either instead of, or in addition to, the capacitor-input filter; this serves both to remove the last of the ripple and to deal with variations in supply and load characteristics.

是否要求非常严格的顺利供应电压直流负载而不是或除了到电容输入筛选器，就可使用一个稳压器；这是同时删除纹波的最后一个，应付供应变化和负载特性。

Along with the development of the technology, the super capacitor is developed.

随着科技的进步，近年来出现了一种新的元器件——超级电容。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。