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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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泰格瑞德可靠性测试软件1.46(1)
可靠性测试，确认数据通讯。
测试对应的ip，ip搜索，确认读写，tcp 串口等方式(Reliability test to confirm data communication. Test the corresponding ip, IP search, confirmation of read and write, TCP serial port, etc.)
- 2020-06-20 04:40:01下载
- 积分：1
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Gateway_427
说明： STM32F427芯片的例程，主要是把串口、usart通信等功能调通(Stm32f427 routine, mainly to serial port, USART communication and other functions)
- 2020-10-17 09:18:37下载
- 积分：1
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CS_SVM
说明： 利用布谷鸟搜素优化算法实现支持向量机的参数寻优(Parameter optimization of support vector machine based on cuckoo search algorithm)
- 2021-01-20 23:55:02下载
- 积分：1
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Desktop
切线刚度法的abaqusFortran子程序实现(ABAQUS Fortran subroutine implementation of tangent stiffness method)
- 2020-06-23 07:20:02下载
- 积分：1
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酷黑自适应模板1
说明： 苹果cms自适应模板,酷黑版。爱看视频的简洁版模板。感觉还行，分享出来。(Apple CMS adaptive template, cool black version. Simple template for watching videos. Feel OK, share it.)
- 2020-06-22 00:00:02下载
- 积分：1
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图片曲线循环切换展示代码
图片曲线循环切换展示代码是一款一屏三图，自动滑动切换的(Picture curve cyclic switching display code is a one-screen three-picture, automatic sliding switching)
- 2019-03-07 13:25:21下载
- 积分：1
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stm32F767控制步进电机的源代码?
STM32F767 基于OS的源代码 驱动多路步进电机。还不错(STM32F767 is an OS-based source code driver for multi-channel stepping motors. veryGood)
- 2020-09-13 15:38:01下载
- 积分：1
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EEE
MATLAB中Simulink 的方向阻抗继电器的电路仿真，设置不同的过渡电阻进行仿真(Circuit simulation of Simulink directional impedance relay in MATLAB, setting different transition resistors for simulation)
- 2019-06-18 14:31:15下载
- 积分：1
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用VB实现的拼图小游戏。对VB学习与图像处理有很好引导作用。感觉挺好玩，就传上共享下！
用VB实现的拼图小游戏。对VB学习与图像处理有很好引导作用。感觉挺好玩，就传上共享下！-Using VB realize the puzzle game. Of VB learning and image processing has a very good guide. Feel very good to play, under the share on the mass!
- 2022-07-21 02:22:47下载
- 积分：1
