查询词典 supply frequency

The developing direction of current laser switch mode power supply is being digital, being intelligentized, being high-frequency and being modularized.

现在的激光开关电源的发展趋势是数字化、智能化、高频化和模块化，因此，本课题选择以单片机为核心研制出一套高功率轴快流CO_2激光器的开关电源控制系统。

Is a production, sales agent service companies, Main Products and Services: constant temperature and humidity box; walk-in constant temperature and humidity room; salt spray test chamber; temperature shock test chamber; simulation of motor transport Test Units; Vibration Test Units; Units drop test; tensile testing machine; sclerometer; combustion test machine; electrical appliances and machine attachment test equipment; wire and cable and cable test equipment; microscopy; digital projector; image measuring instrument; coordinate measuring machine; voltage tester; Oscilloscopes; program-controlled variable frequency power supply; EMC instruments

惠尔仪器公司是一家集生产、代理销售为一体的服务性公司，主营产品和服务：恒温恒湿箱；步入式恒温恒湿室；盐雾试验箱；温度冲击试验箱；模拟汽车运输试验台；振动试验台；跌落试验台；拉力试验机；硬度计；燃烧试验机；电器产品附件及整机试验设备；电线电缆及连接线试验设备；显微镜；数字式投影仪；影像测量仪；三座标测量机；耐压测试仪；示波器；程控变频电源；EMC仪器等

Main product of automation control: various of industrial automation control equipments; PLC Cupboard; frequency conversion cabinet; constant Voltage water supply system; computer machine room and electromagnetic room environment intelligent control system; temperature and humidity controller; XK serious signal controller; elevator group supervisory control system; intelligent lighting contro system; hydroelectric power station gate control system; The implementation automation controlling tasks with the Single Chip Microcomputer development and Line Communication is hardware and software system adjustment and testing designated unit of domestic waste heat generating project.

自动化控制分部主要产品有：各种工业自动化控制设备；PLC柜；变频启动控制柜；恒压供水系统；机房和变电室环境智能化控制系统；温湿度控制仪；XK系列信号控制仪；电梯群控系统；智能化照明控制系统；水电站闸门控制系统；利用工业单片机的开发和载波通讯技术实现各种自动化控制任务。是国内余热发电项目软硬件定点系统调试单位。

The system adopts CPU board with fast processing elevator operational program, data signal exchange, and HMI screen, which can make sure reliable operation and high speed. It also has PHILIPS SJA1000T field CAN bus, 82C251 Bus interface and the latest serial storage technique to record data. The functions of external watchdog and control chip internal watchdog compose two-level procedure monitoring, so as to ensure the normal operation of the control program. Heavy-current switch power LM2576 ensures the stable system working power, which has low requirements for the power supply. High-speed optoelectronic isolator and internal frequency division technology can make NW3P08-41C (42C) CPU receive the input impulse up to 1-phase 100 KHZ*2 CHANEL or 2-phase 50KHZ*1 CHANEL 32bit.

系统采用原装中央处理板，具有快速的处理电梯运行程序、数据信号交换、显示屏人机界面；确保可靠运行电梯控制程序；且速度快，PHILIPS 公司 SJA1000T 现场 CAN 总线；以及 82C251BUS 接口，最新串行存贮技术记录数据；外部看门狗及控制芯片内部看门狗功能组成两级程序监视，确保控制程序正常运行；大电流开关电源 LM2576 确保系统工作电源稳定，且对供电电源要求低；高速光电隔离光藕及微机内部分频技术，使 NW3P08-41C(42C)中央处理板可接收高达 1 相 100KHZ*2通道或 2 相 50KHZ*1通道，32bit 的计数脉冲。

Plant currently has more than 300 employees, is 200,000 per month switching power supply units, electronic transformer 200,000 units, various types of dimmers and low-frequency transformers, Total 500,000 Taiwan.

工厂目前有300多员工，现月产开关电源20万台，电子变压器20万台，各类调光器及低频变压器，合计50万台。

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。

SPE was founded in April 19, 2001 in a professional manufacturing volume to volume connector for selective plating production line and a variety of rolling, hanging plating electroplating production line mainly, at the same time to undertake the kinds of works and a variety of electroplating Electroplating auxiliary equipment, such as: systems for pipes, ventilation equipment and pipe systems, water treatment systems, high-frequency switching power supply, filter machine, electric heater, heat exchanger, Thermostat, Anodes titanium blue, hanging equipment and so on.

深圳市山浩机械设备有限公司创立于2001年4月19日，以专业制造连接器卷至卷连续选择性电镀生产线和各种滚、挂镀电镀生产线为主，同时承接各种电镀工程和提供各种电镀辅助设备，如：供排水管道系统、抽风设备及管道系统、纯水处理系统、高频开关电源、过滤机、电加热器、热交换器、温控器、阳极钛蓝、挂具等。

For example, suppose an induction machine is fed from a variable-frequency supply to control variablethe speed of a drive system.

例如， 例如，假设给感应电动机加一个频率可变的电压以控制拖动系统的转速。

For example, communication power supply, solar cell, UPS, invertors, gasoline dynamotor, and diesel oil dynamotor etc. There are deferent voltage DC power supplies, deferent frequency AC power supplies.

例如，通信电源，太阳能蓄电池，UPS电源，航空中频静变电源，汽油、柴油发电机组等，包括不同电压等级直流电源，工频、中频的交流电源。

The main products are: all kinds of out of style, power distribution cabinets, as well as fixed capacitance cabinet; central air-conditioning automatic control system; a variety of lighting boxes, wall-mounted box, outdoor waterproof box, meter boxes, power boxes; a variety of fire control box , joint boxes, console; a variety of dual-power switch box, since the lotus root decompression starter boxes, variable frequency constant pressure water supply system.

主要生产的产品有：各种抽出式、固定式配电柜以及电容柜；中央空调自动控制系统；各种照明箱、挂墙箱、室外防水箱、电表箱、动力箱；各种消防控制箱、联动箱、控制台；各种双电源切换箱、自藕减压起动箱、变频恒压供水系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。