The relationship between the capability of bidirectional crystal gastriode bearing overload current and time and repeating frequency of overload current was analyzed and means to measure the overload current was put forward. 分析了双向半导体闸流管承受过载电流的能力与过载电流时间长短的关系,提供了过载电流的测试方法、测试数据、过载电流能力与时间的关系曲线。
Design of bidirectional current square pulse power supply 双向电流脉冲电源的设计
Four-bit bidirectional shift register was used to produce the device for demonstrating the direction of direct current. 利用四位双向移位寄存器等电子元件可制作能直观显示直流电流方向的模拟演示仪。
This paper designs a bidirectional current square pulse power supply, which is used in the plasma enhanced electrochemical surface ceramic-coating technology. 设计了一种应用于等离子体增强电化学表面陶瓷化技术(PECC)的双向电流方波脉冲电源。
An improved phase shift bidirectional DC/ DC converter combines PWM control and phase shift control to reduce current stress and expand soft switch range, therefore the conversion efficiency is improved. 改进相移控制的双向DC/DC变换器结合了PWM和相移控制的优点,减小了变换器的电流应力,拓宽了软开关范围,提高了变换器的效率。
Design of a Novel Digital Bidirectional Constant Current Source 一种新颖的全数字式双向恒流源电路的设计
Aluminium Film EM Mechanism Study under Bidirectional Current Stressing 双向电流应力下的金属膜电迁移机理研究
PWM plus phase-shift bidirectional DC-DC converter features reduced current stress, conduction losses, switching losses of semiconductors and wide ZVS range. PWM控制双向DC-DC功率变换器具有对输入和输出电压大范围变化适应性强的优势;相移控制具有无须辅助开关即可实现双向DC-DC功率变换器零电压开关能力的优势。
It Consists of bidirectional switch and zero current switching control technique to achieve on time rectification in the primary circuit. High power factor, high efficency and low THD have been obtained. 电路采用零电流转换方式进行控制,并采用双向开关实现了电路初级的同期整流,从而实现了高功率因子、高效率和低高次谐波的功率因子改善电路。
The proposed auxiliary commutation circuit consists of one resonant inductor and two bidirectional switch, which provides the ZVS condition to the main switch without increasing voltage or current stresses. 提出的辅助变换电路由一个谐振电感和两个双向开关组成,此电路没有增加主开关的电压和电流应力,却给主开关提供了ZVS的条件。
Study on programmable bidirectional constant-current power based on power MOSFET 可编程双向功率MOSFET恒流源的研制
Theoretical analysis and principle test demonstrated that the converter has the advantages such as two-stage power conversions ( LFAC/ HFAC/ LFAC), bidirectional power flow, good line current waveform, strong load adapting ability, low audio noise. 理论分析和试验表明,该变换器具有两级功率变换(LFAC/HFAC/LFAC)、双向功率流、网侧电流波形可得到改善、负载适应能力强、音频噪音小等优点。
Considering the bidirectional diode in a mesoscopic circuit, the paper investigates the quantum dynamic behavior of the current in a nonlinear mesoscopic circuit. 对非线性介观电路中电流的量子动力学行为进行研究。
For a long time, people devoted themselves to searching a new power drive control system, whose power factor can be controlled, with bidirectional power transmission, sinusoid input current waveform, and have a good performance on both dynamic and static state. 长期以来,人们一直在致力于寻求一种既易于进行系统集成,又可实现输入功率因数可控、能量可双向流动、输入电流正弦、动静态性能优良的新型电力驱动控制系统。
Structures of a DSP-based control of complex energy storage system in small experimental platform, has produced a bidirectional DC/ DC converter main circuit, voltage, current digital sampling circuit, high power system control signal drivers and other hardware circuitry. 搭建了一个基于DSP控制复合储能系统小型实验平台,制作了双向DC/DC变换器主电路,电压、电流的数字采样电路,大功率系统控制信号的驱动等硬件电路。
Then the FPGA converts image signals to electrical pulse. In order to convert the output voltage signals to current signals, we designed peripheral conversion circuit. The peripheral conversion circuit contains some voltage-controlled bidirectional constant current source units. 为了将FPGA输出的电压信号转换为电流信号,设计了外围电压/电流转换电路,外围转换电路由多个压控双向恒流源单元电路构成。
In this structure, the process of knowledge is bidirectional, reversible, open and pluralistic, and this meets the requirements of current curriculum reform most. 在这个结构中,知识的流程是双向的、可逆的、开放的和多元的,这也最能切合当下课程改革的要求。
The conduction period of bidirectional switches is controlled by using the hysteresis current control ( HCC). 双向开关的导通和关断由滞环电流控制确定。
The system, which uses the DC bus in parallel connection mode, can realize the bidirectional current control of the super capacitor and the lithium battery. 以母线侧并联方式连接的混合储能光伏发电系统,可以实现超级电容和锂电池的双向电流可控,加以一定的混合储能控制策略能够实现混合储能单元的优化利用。
Using bidirectional de converter for battery charging and discharging, the charging control method of two-section rated current and voltage is optimized in order to control the current of battery charging and discharging, shorten the time of battery charging and prolong the life of battery. 采用双向直流变换器作为蓄电池充放电之用,优化了两段式定电流-定电压的充电控制方法,以控制蓄电池充放电电流,缩短蓄电池的充电时间,延长蓄电池的寿命。
With the bidirectional information and energy flows, a variety of management, automation applications are envisioned to offer the smart grid significant advantages over the current power system in terms of efficiency, flexibility, intelligence, resilience, and sustainability. 凭借这种灵活配置的能量流和信息流,各式各样的管理自动化应用可以广泛的使用在智能电网中,从而显著提高系统的有效性,灵活性,智能化,和可靠性。
Next, hardware circuit was introduced detailedly including the boost circuit, the bidirectional voltage-controlled constant current ciucuit, the keyboard scaning and the LCD displaying circuit. 其次详细介绍了治疗仪的硬件电路,包括Boost升压电路、双向压控恒流输出电路、按键扫描电路和液晶显示电路等。