-
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
-
俄罗斯方块
Visual C++游戏开发经典案例详解 俄罗斯方块(Tetris, 俄文:Тетрис)是一款风靡全球的电视游戏机和掌上游戏机 请点击左侧文件开始预览 !预览只提供20%的代码片段,完整代码需下载后查看 加载中 侵权举报
- 2023-06-20 07:50:04下载
- 积分:1
-
implementation of ring counter
implementation of ring counter
- 2023-05-28 15:55:03下载
- 积分:1
-
a database management system! Nothing in the data
一个数据库的管理系统!含概了数据的备份
主要是用做学生后勤信息的管理!-a database management system! Nothing in the data-backup is mainly used to make students logistics information management!
- 2022-01-25 14:52:10下载
- 积分:1
-
8 通道双正交余弦调制滤波器组实现,滤波器的采样频率为 Fs:20000Hz 设计的低通原型的通带频率为625Hz 阻带衰减80db,滤波器的系数长度为512...
8 通道双正交余弦调制滤波器组实现,滤波器的采样频率为 Fs:20000Hz 设计的低通原型的通带频率为625Hz 阻带衰减80db,滤波器的系数长度为512-8-channel biorthogonal cosine-modulated filter banks to achieve, filter sampling frequency Fs: 20000Hz designed a prototype low-pass frequency of 625Hz passband stopband attenuation of 80db, the length of filter coefficients for 512
- 2022-04-25 05:02:14下载
- 积分:1
-
不错的万年历,可以加载系统中单独使用,配有个节气注释,可以自行修改作为日程备忘...
不错的万年历,可以加载系统中单独使用,配有个节气注释,可以自行修改作为日程备忘-A good calendar, you can load the system alone, with Terms of the Notes, you can modify its own schedule as a reminder
- 2022-03-22 10:22:10下载
- 积分:1
-
数码管显示程序,用C语言编程实现,适合初学者学习
数码管显示程序,用C语言编程实现,适合初学者学习-Digital tube display program, using C programming language, suitable for beginners to learn
- 2022-02-07 23:22:52下载
- 积分:1
-
读写pdf文件的程序开发库源码
读写pdf文件的程序开发库源码-Pdf documents to read and write the procedures for the development of the Treasury source
- 2022-08-26 02:03:12下载
- 积分:1
-
16计数器与AVR单片机Atmega8515
16 counters with AVR ATmega8515
- 2022-02-13 06:30:54下载
- 积分:1
-
lcd工具,将图片转换为lcd可以使用的数据
lcd工具,将图片转换为lcd可以使用的数据-lcd tools, the picture is converted to data that can be used lcd
- 2022-03-09 12:47:54下载
- 积分:1