13.1电力系统 13.2工业企业配电 13.3安全用电

The IPMTS.OAT1/T3 Series is designed to protect voltage sensitive components from high voltage, high energy transients http:/lonsemi.com Excellent clamping capability, high surge capability, low zener impedance and fast response time. The advanced packaging technique provides for a highly efficient micro miniature, space PLASTIC SURFACE MOUNT saving surface mount with its unique heat sink design. The

High power diode laser ROFIN DI Series ROFIN DL X75 750 w ROFIN DL 010 000 W ROFIN DL 015 500 W ROFIN DL 020 2000 w ROFIN DL 025 2500 W ROFIN DL 030 3000 w ROFINI SINAR

Local or remote control Microprocessor controlled RS-232/RS-485 CAN Complete diode laser control Affordably priced and monitoring solution Air or water cooling( specify)

MITSUBISHI FAST RECOVERY DIODE MODULE RM400DY665 HIGH POWER SWITCHING USE HVDi(High Voltage Diode) Module INSULATED TYPE

Patented free-floating silicon technology Low on-state and switching losses Optimized for use as freewheeling diode in GTo converters Standard press-pack housing, hermetically cold-welded Cosmic radiation withstand rating

External dimensions(Unit: mm) High frequency rectification （1)Small power mold type(PMDS) （2) Ultra low VF （3)Very fast recovery

1SR154400/1sR154-600 Diodes Rectifier diode 1SR154400/1sR154600 EXternal dimensions(Units: mm) （1)General purpose rectification （2) Surge absorption

6.1 光电检测器 6.2 光电检测器的特性指标 6.3 光接收机 6.4 光接收机的噪声 6.5 光接收机的灵敏度

一、什么是多径效应? 移动通信电波传播最具特色的现象是多径 衰落,或称多径效应。无线电波在传输过程中会 受到地形、地物的影响而产生反射、绕射、散射 等,从而使电波沿着各种不同的路径传播,这称 为多径传播。由于多径传播使得部分电波不能到 达接收端,而接收端接收到的信号也是在幅度、 相位、频率和到达时间上都不尽相同的多条路径 上信号的合成信号,因而会产生信号的频率选择 性衰落和时延扩展等现象,这些被称为多径衰落 或多径效应