Dual Inverting Log Gain/Attenuator

DESCRIPTION The DS1800 is a dual audio-taper potentiometer designed specifically for use in the feedback path of the inverting configuration of an operational amplifier (see Figure 2). In this configuration, the DS1800 provides a VO /VI relationship of -20log(RF/RI), giving a gain/attenuation r

文件：428.71 Kbytes 页数：14 Pages

Dallas

Dual Inverting Log Gain/Attenuator

DESCRIPTION\nThe DS1800 is a dual audio-taper potentiometer designed specifically for use in the feedback path of the inverting configuration of an operational amplifier (see Figure 2). In this configuration, the DS1800 provides a VO /VI relationship of -20log(RF/RI), giving a gain/attenuation range ■ Ultra-low power consumption\n■ Operates from 3V or 5V supplies\n■ Two digitally controlled, 128-position potentiometers including mute\n■ Logarithmic gain characteristics\n■ Zero-crossing detection eliminates noise caused by discrete wiper changes\n■ Two control interfaces\n   - 3-wire serial CPU ;

ADI

亚德诺

直流电源

DS1000系列直流电源是采用PWM技术的高频开关式直流电源， 模块化设计， 采用先进的DSP数字控制技术，确保直流电源输出的高精度、 低纹波、 电压电流动态响应速度快， 且效率高达93%; 与传统的可控硅电源相比较， 高频开关式直流电源具有体积小， 重晕轻， 纹波小， 功率因数高、 稳定性好等优点， 特别是高电压输出稳定性尤其明显； 产品主要应用于电子电力生产、 蓄电池行业、 PCB板制造行业及通讯、 PLC供电、 机电老化试验、 研究单位、 实验室对高精度直流电源的需求。 用千替代进口中大功率直流电源产品。 ◇功率：600W-2000KW功率可选；\n◇输出电压、电流、功率可以从零到全范围可设定；\n◇恒定电压、 恒定电流、恒定功率之使用， 可自动交叉变换， 维持控制与保护兼顾特性；\n◇LED显示，5位数字电压、电流显示；\n◇并机功能：外置M&S主-从并机端口，单机可通过系统设置任意切换主-从机，最多支持200台同型号产品并机；\n◇通讯接口： RS485、RS485、GPIB多种通讯接口可选，MODBUS-RTU标准通讯协议，标配0-5V模拟量信号接口；\n◇稳压精度高、 纹波电压低；\n◇具有过压、 过流、 过温、 短路保护功能；\n◇输入输出隔离。;

JETHLEY

吉事励电子

2000 Watt Front End AC-DC Power Supplies

The DS2000 series of bulk front end AC-DC power supplies comprises two models, each of which accepts a wide range 90–264 Vac input and provides a main 12 V output plus a 3.3 V or optional 5 V standby output. The DS2000-3 is rated at 2,000 watts, when operating from a nominal 200 Vac input. These pow ·Active Power Factor Correction\n·Active AC inrush limit control\n·1U x 3U form factor (4 across in a 19\" rack)\n·High Density 26.14 W/cu-in\n·Standard 3.3 V standby voltage at 9 A\n·No Minimum Load Required\n·Hot Plug Operation\n·Active Current Sharing\n·I2C Communication\n·Smart Fan Speed Control;

Artesyn

雅特生