- 欢迎使用百变通BBT-308P对讲机编程软件，适用的操作系统Win98/2000/NT/ME/XP，电脑需要配置有通讯端口：串行口COM机型信息，要编程对讲机时，需要根据对讲机的频段进行选择。接收频率：当所设定的频率超出频段之外，编程软件自动纠正。只有在设定了信道的接收频率以后，才能设定信道的其他参数。发射频率：当所设定的频率超出频段之外，编程软件自动纠正。CTC/DCS解码：接收到的信令应该与所设定的模拟/数字亚音频信令相匹配，静…大小：2.8M免费软件简体版本： 电脑版
- The AD199x amplifiers, including the AD1990, AD1992, and AD1994, are single-chip devices containing an integrated stereo modulator and stereo bridge-tied load (BTL) power stage. The AD199x amplifiers deliver audiophile sound quality (THD 0.005 %; SNR 101 dB; PSRR 65 dB) with at least 50 % less heat than traditional linear amplifiers. The devices breakthrough performance is achieved through the clo…大小：533KB共享软件中文版本：
- The ADAU1513 is a 2-channel bridge-tied load (BTL) Class-D audio power stage. The power stage can drive the speaker loads of 4 at up to 15 W per channel at high efficiency. The 4-channel audio system can be formed when used with an ADAV4201 pulse-width modulator (PWM) processor using two ADAU1513s. The power stage accepts a 3.3 V logic differential PWM as input from an ADAV4201 processor. The powe…大小：433KB共享软件中文版本：
- The ADAU1590 is a 2-channel, bridge-tied load (BTL) switching audio power amplifier with an integrated - modulator.The modulator accepts an analog input signal and generates a switching output to drive speakers directly. A digital, microcontroller-compatible interface provides control of reset, mute and PGA gain as well as output signals for thermal and overcurrent error conditions. The output sta…大小：544KB共享软件中文版本：
- The ADAU1592 is a 2-channel, bridge-tied load (BTL) switching audio power amplifier with an integrated - modulator.The modulator accepts an analog input signal and generates a switching output to drive speakers directly. A digital, microcontroller-compatible interface provides control of reset, mute, and PGA gain as well as output signals for thermal and overcurrent error conditions. The output st…大小：666KB共享软件中文版本：
- The SSM2301 is a fully integrated, high efficiency, Class-D audio amplifier designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.0 V supply. It is capable of delivering 1.4 W of continuous output power with less than 1% THD + N driving an 8 load from a 5.0 V supply.The SSM2301 feature…大小：644KB共享软件中文版本：
- The SSM2302 is a fully integrated, high efficiency, Class-D stereo audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.0 V supply. It is capable of delivering 1.4 W of continuous output power with less than 1% THD + N driving an 8 load from a 5.0 V supply.The S…大小：544KB共享软件中文版本：
- The SSM2305 features a high efficiency, low noise modulation scheme that does not require external LC output filters. The modu-lation provides high efficiency even at low output power. The SSM2305 operates with 90% efficiency at 1.3 W into 8 or 83% efficiency at 2.2 W into 4 from a 5.0 V supply and has an SNR of 98 dB. Spread-spectrum pulse density modulation is used to provide lower EMI-radiated …大小：544KB共享软件中文版本：
- The SSM2304 is a fully integrated, high efficiency, Class-D stereo audio amplifier. It is designed to maximize performance for portable applications. The application circuit requires a mini-mum of external components and operates from a single 2.5 V to 5.0 V supply. It is capable of delivering 2 W of continuous output power with less than 10% THD + N driving a 4 load from a 5.0 V supply.The SSM230…大小：544KB共享软件中文版本：
- The SSM2306 is a fully integrated, high efficiency, Class-D stereo audio amplifier designed to maximize performance for portable applications. The application circuit requires minimum external components and operates from a single 2.5 V to 5.0 V supply. It is capable of delivering 2 W of continuous output power with less than 10% THD + N driving a 4 load from a 5.0 V supply.The SSM2306 features ul…大小：43KB共享软件中文版本：
- The SSM2311 is a fully integrated, high efficiency, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 3 W of continuous output power with less than 1% THD + N driving a 3 load from a 5.0 V supply.The SSM2311 fea…大小：544KB共享软件中文版本：
- The SSM2315 features a high efficiency, low noise modulation scheme that requires no external LC output filters. The modulation continues to provide high efficiency even at low output power. It operates with 93% efficiency at 1.4 W into 8 or 85% efficiency at 3 W into 3 from a 5.0 V supply and has an SNR of 103 dB. Spread-spectrum pulse density modulation is used to provide lower EMI-radiated emis…大小：5.3M共享软件中文版本：
- The SSM2317 is a fully integrated, high efficiency, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 3 W of continuous output power with 1% THD + N driving a 3 load from a 5.0 V supply.The SSM2317 features a hi…大小：544KB共享软件中文版本：
- The SSM2319 is a fully integrated, high efficiency Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 3 W of continuous output power with 1% THD + N driving a 3 load from a 5.0 V supply.The SSM2319 features a hig…大小：544KB共享软件中文版本：
- The SSM2335 is a fully integrated, high efficiency, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 3 W of continuous output power with 1% THD + N driving a 3 load from a 5.0 V supply.The SSM2335 features a hi…大小：543KB共享软件中文版本：
- 介绍了一种心室晚电位和常规12导联心电信号综合采集电路.电路采用定时中断采样,具有程控调节放大倍数,全隔离浮地,低噪声,高共模抑制比,能够长时间连续采集数据等特点. 关键词:心室晚电位;心电信号;数据采集;电路设计 心电信号是心脏在活动过程中心肌细胞的极化和除极化在体表产生的电位变化,它反映了心脏的工作情况.心室晚电位是心肌延迟除极产生的碎裂电位,位于QRS波终末部分,其病理基础为心肌的损伤或缺血.研究心电信号和心室晚…大小：421KB免费软件中文版本： 电脑版
- 关键词 光检测电路 SPICE模拟 稳定性 噪声特性光电二极管及其相关的前置放大器是基本物理量和电子量之间的桥梁.许多精密应用领域需要检测光亮度并将之转换为有用的数字信号.光检测电路可用于CT扫描仪,血液分析仪,烟雾检测器,位置传感器,红外高温计和色谱分析仪等系统中.在这些电路中,光电二极管产生一个与照明度成比例的微弱电流.而前置放大器将光电二极管传感器的电流输出信号转换为一个可用的电压信号.看起来好象用一个光电二极…大小：411KB免费软件中文版本： 电脑版
- 在传统的高频变压器设计中,由于磁心材料的限制,其工作频率较低,一般在20kHz左右.随着电源技术的不断发展,电源系统的小型化,高频化和高功率比已成为一个永恒的研究方向和发展趋势.因此,研究使用频率更高的电源变压器是降低电源系统体积,提高电源输出功率比的关键因素.大小：85KB免费软件简体版本： 电脑版
- 采用单片机为控制核心研制开发的JSQ-200型系列伺服放大器，增加了一些实用功能（如：断信号保护、过信号保护、堵转保护、电制动等），大大提高了设备的可靠性和安全性，同时有利于提高整套控制系统的调节品质。关键词：伺服放大器；单片机；保护；调节；堵转；电制动0、概述JSQ-200型系列伺服放大器（以下简称伺放）是电动执行机构的功率驱动单元。它接收调节器或远方操作器的控制信号和来自电动执行机构的位置反馈信号，根据两信…大小：88KB免费软件中文版本： 电脑版
- 【摘要】：本文介绍了直接数字频率合成器(DDS)的基本组成及设计原理,给出了基于FPGA的具体设计方案及编程实现方法。仿真结果表明,该设计简单合理,使用灵活方便,具有良好的性价比。大小：331KB共享软件中文版本： 电脑版
- 在目前世界能源供应日趋紧张,要求节能的呼声日益高涨的背景下,DVD作为一大块消费电子类产品的节能也不可避免的提到日程上来.安森美半导体所提出的DVD电源方案,既能符合最严格的待机功耗标准,而且也不会带来成本上涨的忧虑.本文介绍如何应用NCP1200P40来设计一个全范围输入,电路简单,所需外围器件少,成本低的DVD电源(如图一所示)一 正常模式 开机启动时,NCP1200由二极管D218从交流侧供电,经过IC8脚向电容C207以4mA速率充…大小：86KB共享软件中文版本： 电脑版
- 是一款非常简洁的VHF频段小功率电视发射机电原理图,曾生产多年深受使用者喜爱。 ... 完全按图1参数制作的发射机,只能工作于6频道以上,较低的频道将因各级 ...大小：542KB共享软件中文版本： 电脑版
- Analog Devices, Inc.,ADI数模转换器IC的设计方案,国模拟器件公司(AnalogDevices,Inc.,纽约证券交易所代码:ADI),全球领先的高性能信号处理应用解决方案供应商,今日在马萨诸塞州诺伍德市(Norwood,Mass.)发布具有内置14bit数模转换器(DAC)的直接数字频率合.大小：5.5M共享软件中文版本： 电脑版
- The ADuC832 MicroConverterreg; is a fully integrated 12-bit data acquisition system-on-a-chip. Like all of ADIs MicroConverter products, it features precision A/D D/A conversion and a Flash microcontroller on a single chip.The ADuC832 is 100% hardware backward compatible with the ADuC812, except that it requires a different crystal. If you require full hardware backward compatibility with the ADuC…大小：544KB共享软件英文版本：
- The ADuC836 MicroConverter is a fully integrated 16-bit data acquisition system-on-a-chip. Like all of ADI's MicroConverter products, it features precision A/D D/A conversion and a Flash microcontroller on a single chip.The ADuC836 is 100% backward compatible (hardware and software) with the ADuC816. It is available in 52-pin PQFP or 56-pin CSP packages and operates on a 3V or 5V power supply.大小：433KB共享软件中文版本：
- The ADuC831 MicroConverter is a fully integrated 12-bit data acquisition system-on-a-chip. Like all of ADI's MicroConverter products, it features precision A/D D/A conversion and a Flash microcontroller on a single chip. For detailed documentation on the ADuC831, please click the Datasheets buttons at left.The ADuC831 is 100% hardware backward compatible with the ADuC812. It is available in 52-pin…大小：544KB共享软件中文版本：
