| 1. | Simulation study of chaos in dc - dc converter
变换器电路混沌现象的仿真研究 |
| 2. | Then novel circuit structure and circuit topologies family of current mode ac / ac converters with high frequency ac link , based on flyback converter , are proposed
本文提出了基于反激flyback变换器的电流源高频交流环节ac ac变换器电路结构及其拓扑族。 |
| 3. | At first , a circuit of time - amplitude converter with a precision of 0 . lus has been developed . it " s working principle and fundamental composition are discussed
我们首先研制了一种精度为0 . 1us的时间?幅度变换器电路，介绍了其工作原理和基本组成。 |
| 4. | By virtue of the small - signal model the control stage is optimized and the integrated circuit uc3875 is used to complete the control stage
根据全桥移相zvsdc dc变换器电路的小信号模型，对其控制电路作出了优化设计，并采用移相控制芯片uc3875设计了相应的控制电路。 |
| 5. | We add simple minimal input current controlling circuit to traditional peak current controlled dc / dc boost converter to make the converter with the minimal and maximal input current controlled at the same time
在原峰值电流控制dc dcboost型变换器电路结构的基础上，增加电流最小值控制电路。 |
| 6. | The converter had the virtues of high integration level , high efficiency , high reliability and low cost . it can be formed high efficiency power supply by using a few external components
开关电源系统由于其具有高效率、高可靠性、体积小和抗干扰能力强等优点,使得开关电源变换器电路成为国内外广泛研究的对象。 |
| 7. | Then novel circuit structure and circuit topologies family of voltage mode ( based on forward converter ) and current mode ( based on flyback converter ) ac - ac mode ac / ac converters with high frequency link , are proposed
本文提出了基于正激forward变换器的电压源型和基于反激flyback变换器的电流源型交?交型高频环节ac ac变换器电路结构与拓扑族。 |
| 8. | The basic design index was : maximum output power 9w , no load consumption < 50 mw , switching frequency 132khz , maximum duty cycle 65 % , thermal shutdown temperature 135 . simulation is very important to analog ic design
该变换器电路的主要设计指标为:最大输出功率9w ,空载时芯片的功耗低于50mw ,开关频率为132khz ,最大占空比为65 % ,热保护温度135 。 |
| 9. | Secondly , the specific circuit effects in the phase - shift pwm converter and their impact on the converter dynamics are analyzed . the small - signal model is derived incorporating the effects of phase - shift control . the design of control stage of the converter are optimized based on the small - signal model theoretically
针对全桥移相控制zvsdc dc变换器特有的电路性能以及变换器的动态特性，并结合移相控制的特点建立了全桥移相zvsdc dc变换器电路的小信号模型。 |
| 10. | The requirements are the following : ( 1 ) input voltage : 220 vac ; ( 2 ) output voltage : 48 vdc ; ( 3 ) output current : 20 adc ; ( 4 ) switching frequency : 80khz ; ( 5 ) operated frequency of apfc : 100khz the simulated software pspice 7 . 1 realizes simulation research of the main circuit , and the simulated result of key waveforms in the main circuit is introduced
设计指标为：输入电压为交流220v ，频率为50hz ，输出电压和电流为48v ， 20a ，功率因数校正电路的工作频率为100khz ，直流变换器电路的工作频率为80khz 。利用仿真软件pspice7 . 1对主电路进行了仿真研究，并介绍了主电路的几个关键波形的仿真结果。 |
