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发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10...
发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。-Part of the launch phase-locked loop frequency synthesizer using technology, MC145152 and MC12022 PLL chips to lock in the exact carrier frequency 35MHz, the output carrier to achieve the stability of 4 × 10-5, reaching the accuracy of 3 × 10-5 by the varactor diode V149 and integration to achieve MC1648 chip VCO FM modulation on the carrier selection transistor amplifier at the end of class 2SC1970, to work in the C state to enlarge and improve the efficiency of the amplifier output power to meet the design requirements.
- 2022-08-18 16:37:11下载
- 积分：1
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归档单机版程序,access数据库,导入注册文件信息就可以用
归档单机版程序,access数据库,导入注册文件信息就可以用-single version archiving procedures, access databases, import registration information can be used
- 2022-05-24 07:25:41下载
- 积分：1
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农历，阳历，月历，节日，节气，生肖，星座，近代史，可直接使用...
农历，阳历，月历，节日，节气，生肖，星座，近代史，可直接使用-Lunar, solar calendar, the calendar, the festival, the cycle of the 12 constellations, the modern history of direct access
- 2023-08-16 12:20:03下载
- 积分：1
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一款简单的TIC TAC TOE游戏。加入了人工智能，图形版。
一款简单的TIC TAC TOE游戏。加入了人工智能，图形版。-TIC TAC TOE game. Joined the artificial intelligence, graphics version.
- 2023-07-27 14:00:03下载
- 积分：1
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对于刚开始学电脑的人，用的是无聊的。在已知…
for the just beginning learn the computer person,use DOS is boring . after known a little DOS,think dos is mysterious.this is the book introduce how to use dos deeply.
- 2022-03-24 06:35:12下载
- 积分：1
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包含各种各大城市的数字地图
比例尺为1:5
包含各种各大城市的数字地图
比例尺为1:5-include most city of china
the rate is 1/50000
- 2022-08-12 11:03:16下载
- 积分：1
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东滕网站源码，漂亮的界面，基本网页功能设计，聊天室
东滕网站源码，漂亮的界面，基本网页功能设计，聊天室- East clears out the website source code, attractive contact surface, basic homepage functional design, chatroom ,ASP,编程网站/Program Web Site 【上载源码成为会员下载此源码】【成为VIP会员下载此源码】
-East Teng website source, and beautiful interface, basic functions of the website design, Chat Room-East clears out the website source code. attractive contact surface, homepage basic functional design, chatroom. ASP, Programming Web site/Web Site Program [on the source as a member download this source] [become VIP Member download this source--
- 2022-08-21 04:54:35下载
- 积分：1
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数据结构是从清华
Data Structure is from qinghua
- 2022-04-24 22:10:28下载
- 积分：1
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c++提示扩展工具代码
c++提示扩展工具代码-c prompt expansion tool code
- 2022-02-21 10:11:16下载
- 积分：1
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计算器应用程序
应用背景一个计算器应用程序。可以计算加减乘除，具有简单的界面，帮助初学C++的同学熟练掌握Visual C++ MFC的框架构建等。关键技术Visual C++ MFC的框架构建，对话框的创建与设计，文本框获取输入信息，常用控件的操作，添加变量，编写函数等。
- 2022-03-31 18:14:55下载
- 积分：1
