推挽式的

In the dissertation, principles of phase-shifted full-bridge ZVS PWM and push-pull boost converter are analyzed; Reason of duty ratio dropping out and solution measures are introduced at the same time; The magnetic biasing and ZVS methods of Lagging brachium are studied detailedly in the bidirectional DC converters.

在本文中首先分析了移相全桥式ZVS-PWM功率变换和推挽式DC／DC Boost功率变换的工作原理，分析了移相全桥式滞后臂实现零电压关断困难以及占空比丢失的原因以及采取相应的改善措施，分析了双向DC／DC变换器产生偏磁的原因以及采取抗偏磁的措施。

The collector in dynatron of smooth Ou photosensitive or blast off extremely direct receive laden resistor to be able to satisfy lesser laden requirement; to be in of dynatron of smooth Ou photosensitive blast off extremely add dynatron enlarge drive, the push-pull type circuit that through two photoelectricity coupler makes and feedbacking through increasing photosensitive dynatron base, reach stronger laden capacity already, increased the interference rejection capacity of power interface, the outputs power inadequacy weakness that overcame smooth Ou, raise the switch rate of smooth Ou again, overcame the distributinging capacitance as a result of existence of smooth Ou oneself, cause an effect to transmitting speed.

在光耦光敏三极管的集电极或发射极直接接负载电阻即可满足较小的负载要求；在光耦光敏三极管的发射极加三极管放大驱动，通过两只光电耦合器构成的推挽式电路以及通过增加光敏三极管基极正反馈，既达到较强的负载能力，提高了功率接口的抗干扰能力，克服了光耦的输出功率不足的缺点，又提高光耦的开关速度，克服了由于光耦自身存在的分布电容，对传输速度造成影响。

Two anodes are connected in parallel and in push-pull with the other two via U sections.

二个阳极被连接在平行的和在推挽式的中用另外二经由 U 区段。

The simulation result shows the fault diagnosis method on wavelet transform and neural networks for the push-pull circuits has good effect.

仿真结果表明基于小波变换和神经网络的推挽式电路故障诊断方法取得了较好的效果。

During the testing process, the circuit use the on-off power supply's pull and push structure as prototype, gaining a additional LC in series resonance circuit, which is also a opposite sharp structure. In the same frequency,and in the work state of work voltage, receiving even more high efficiency and output power.

该电路在实验过程中以开关电源推挽式结构为原型，改进得到一个附加了LC串联谐振回路的反激式结构，在同等工作频率、工作电压的状态下，得到了比推挽式结构更高的效率和输出功率。

Roger since the invention of the transistor oscillation push-pull single transformer DC converters, is to achieve high-frequency conversion control circuit beginning in 1957 the U.S. investigation self-invented the push-pull Two-transformer, 1964 U.S. scientists have proposed abolition of the frequency of the series switching power supply transformer, as envisaged in this power to the volume and weight of the decline was a fundamental way.

Roger发明的自激振荡推挽晶体管单变压器直流变换器，是实现高频转换控制电路的开端，1957年美国查赛（Jen Sen发明了自激式推挽双变压器，1964年美国科学家们提出取消工频变压器的串联开关电源的设想，这对电源向体积和重量的下降获得了一条根本的途径。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了