电源

Firstly, the reasons of lower power factor and high harmonic are analyzed in the conventional laser power supply, and the need of load characteristic of the laser is also thought. So the new type high performance power supply of DPSSL which is constituted of two convertors is obtained. The principle of the main circuit, control method and protective circuit are described.

本文首先通过对传统激光电源中功率因数低、谐波电流大等缺点的分析，再结合半导体泵浦源的特性要求，提出了一种基于两级变换器的新型高性能半导体泵浦固体激光器电源。

The Coffee Cup Power Inverter is a conveniently shaped power source that coverts your car's DC power into two 120-volt AC outlets.

在咖啡杯逆变器是一种方便型电源的封套您的汽车的直流电源分为120伏交流电。

The DS1543 also contains its own power fail circuitry which automatically deselects the device when the VCC supply enters an out of tolerance condition.

该DS1543还包含它自己的电源故障电路，自动取消选择该设备时，VCC电源进入一个宽容的条件下进行。

At this point, you should check the oscillation manifold circuit, the voltage should be the normal 10 or so (Special reminder: because the test should be carried out in the electrized, and has high-voltage power supply, and therefore pay special attention to personal safety, do not try to touch any part of the power supply).

这时，应先检查振荡集成块的供电电路，其正常的电压应该在10V左右（特别提醒：由于测试电压应在通电情况下进行，而电源板上有高压电，因此要特别注意人身安全，不可尝试直接触摸电源的任何部分）。

A power source is applied to the structure to control the directionality of the plasma formed by exciting the power isolation of the etchant gas.

控制等离子体的方向性的电源与用来激活腐蚀剂气体的电源隔离。

AC Induction Motor Control Using the constant V/f Principle and a Natural PWM Algorithm (12 pages, revision A, updated 12/05) Induction motors can only run at their rated speed when they are connected to the main power supply. This is the reason why variable frequency drives are needed to vary the rotor speed of an induction motor.

使用V/F原理的交流电机控制和简单的PWM算法（12页，修订版A，更新时间：05年12月）交流电机在连接到电源时只能以其额定速度运转，所以要改变转速必须改变电源频率。

In recent years, with the piezoelectric ceramic driver in the field of precision measurement in the wider use of domestic and foreign scholars in the field of piezoelectric ceramic drive power to do a lot of work, all dedicated to the development of piezoelectric ceramic micro-displacement institutions drive Power.

近些年，随着压电陶瓷驱动器在精密测量领域中的广泛应用，国内外学者在压电陶瓷驱动电源领域做了大量工作，研制出各种专用于压电陶瓷微位移机构的驱动电源。

A novel scheme of designing the LD driver based on field programmable gate array is proposed. Employing FPGA as the controlling center, all the functional modules of the LD driver, including AD/DA converting, temperature PID controlling, invariably current driving, LD protection, input and output circuit, are arranged to operate together harmoniously under FPGA.

提出了一种新型的基于现场可编程门阵列技术的半导体激光器驱动电源设计方案，该方案以 FPGA 为控制核心， LD 驱动电源的 AD/DA 转换、温度 PID 控制、恒定电流驱动、LD 保护及人机交互等功能模块电路均在 FPGA 的控制下协调工作。

Its complete product line, fiber-optic network, both external power supply type also has built-in power type, both stand-alone also has the standard 19 rack-mount products, covering Ethernet, Fast Ethernet, Gigabit Ethernet and ATM network used in fiber-optic transceivers, fiber optic switches and fiber optic modems and other equipment. early in 1999, netLINK first time in Greater China to launch a technology leader in the industry have the adaptive function of 10/100 Fast Ethernet Media Converter (HTB -1100 series), and its excellent cost performance by customers. October 24, 2001 to 27 in Shanghai 2001 International Electronic Products Exposition and fifty-eighth session of Electronics Show , the Haitong exhibited Netlink Technologies Limited and the exclusive agent of Nufiber company, CTS Corporation a full range of fiber-optic network products, as well as Intelligent Network standard 16-slot rack-mount fiber optic media converter, RS-232/422/485 up mode / single-mode fiber converter and other new products, attracted the attention of the industry and well received by the audience and the fiber-optic network customers.

其光纤网络产品系列齐全，既有外置电源型也有内置电源型，既有独立式也有标准19机架式产品，涵盖以太网、快速以太网、千兆以太网和ATM网络用的光纤收发器、光纤交换机及光纤数据机等各种设备。1999年初，netLINK首先推出当时在大中华区业界处于技术领先的有10/100自适应功能的快速以太网媒体转换器（HTB-1100系列），并以其优异的性能价格比广受客户的欢迎。2001年10月24日至27日在上海举行的2001国际电子产品博览会和第五十八届电子产品展览会上，海通科技有限公司展出了netLINK和独家代理的Nufiber公司、CTS公司全系列的光纤网络产品以及智能网管型16槽标准机架式的光纤媒体转换器、RS-232/422/485至多模/单模光纤转换器等新产品，深深吸引了业界的注意和广受观众和光纤网络客户的欢迎。

Full on-chip hardware support of semaphore signaling between ports Fully asynchronous operation from either port Separate byte controls for multiplexed bus and bus matching compatibility Supports JTAG features compliant to IEEE 1149.1 LVTTL-compatible, single 3.3V (150mV) power supply for core LVTTL-compatible, selectable 3.3V (150mV)/2.5V (100mV) power supply for I/Os and control signals on each port Available in 208-pin Plastic Quad Flatpack, 208-ball fine pitch Ball Grid Array and 256-ball Ball Grid Array Industrial temperature range (C40C to +85C) is available for selected speeds

全片的旗语信号港口之间无论从港口独立的多路复用总线和控制总线字节完全支持异步操作的硬件配套兼容性支持JTAG功能符合IEEE 1149.1的LVTTL兼容，（150mV的）电源为3.3V单核心的LVTTL，兼容，（150mV的）/ 2.5V的选择3.3（100mV的）电源供应为我/ O和每个端口208引脚塑料方形扁平，208球细间距球栅阵列和256球的球栅阵列控制信号工业温度范围（C40C至+85 C）是选定的速度可

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。