<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[JJRainbow的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/JJRainbow</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; JJRainbow]]></copyright><item><title><![CDATA[HDM1010 GNSS 模块硬件接口电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157842510</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157842510</guid><author>JJRainbow</author><pubDate>Sat, 07 Feb 2026 16:14:47 +0800</pubDate><description><![CDATA[HDM1010 GNSS 模块的硬件接口电路设计，包括射频前端、电源管理、复位控制、UART 通信及测试接口等关键部分，为硬件开发、驱动调试及系统集成提供技术依据。]]></description><category></category></item><item><title><![CDATA[USB 转 SWD 下载电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157807687</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157807687</guid><author>JJRainbow</author><pubDate>Fri, 06 Feb 2026 16:06:53 +0800</pubDate><description><![CDATA[ USB 转 SWD（Serial Wire Debug）调试下载电路，通过标准 USB 接口实现调试主机与目标设备（如 ARM 内核 MCU）之间的 SWD 通信，同时支持对目标设备的供电控制。]]></description><category></category></item><item><title><![CDATA[ SN75176 芯片设计RS-232 转 RS-485 通信模块设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157776365</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157776365</guid><author>JJRainbow</author><pubDate>Thu, 05 Feb 2026 22:37:35 +0800</pubDate><description><![CDATA[ SN75176 芯片设计的 TTL UART 转 RS-485 通信模块的原理、硬件构成与电气特性]]></description><category></category></item><item><title><![CDATA[9V 转 3.3V 双级电源转换电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157738346</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157738346</guid><author>JJRainbow</author><pubDate>Wed, 04 Feb 2026 22:09:18 +0800</pubDate><description><![CDATA[MP2359 同步降压转换器与 XC6203X332 线性稳压器组成的双级电源转换电路]]></description><category></category></item><item><title><![CDATA[基于 522 系列 RFID 读卡模块的电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157738218</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157738218</guid><author>JJRainbow</author><pubDate>Wed, 04 Feb 2026 22:03:12 +0800</pubDate><description><![CDATA[  522 系列（如 MFRC522）非接触式 RFID 读卡芯片的电路设计]]></description><category></category></item><item><title><![CDATA[4G模块_POWER_转3.6V 电源模块电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157651081</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157651081</guid><author>JJRainbow</author><pubDate>Mon, 02 Feb 2026 15:11:40 +0800</pubDate><description><![CDATA[MIC29302WU 线性稳压器设计的 3.8V 稳压电源模块。它将输入的 5V 电压转换为稳定的 3.8V 输出，为 4G 通信模块或其他低压设备提供可靠的电源。]]></description><category></category></item><item><title><![CDATA[ISP一键下载电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157504520</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157504520</guid><author>JJRainbow</author><pubDate>Thu, 29 Jan 2026 10:21:12 +0800</pubDate><description><![CDATA[自动复位：通过 DTR 信号控制目标设备的 NRST 引脚，实现硬件复位。启动模式切换：通过 RTS 信号控制目标设备的 BOOT0 引脚，在下载时切换到系统存储器启动模式，完成后恢复到正常启动模式。逻辑控制：利用 74HC1G66GW 单路模拟开关，确保复位与启动模式切换的时序正确性。S8050 (Q2)：NPN 型三极管，用于驱动复位信号 NRST。S8550 (Q1)：PNP 型三极管，用于驱动启动模式信号 BOOT0。：单路模拟开关，用于控制 NRST 信号的输出路径，保证时序逻辑。]]></description><category></category></item><item><title><![CDATA[SD 卡（SPI/SDIO 模式）电路设计原理图-附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157471684</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157471684</guid><author>JJRainbow</author><pubDate>Wed, 28 Jan 2026 15:31:56 +0800</pubDate><description><![CDATA[SDIO 接口的 TF 卡（Micro SD 卡）扩展电路设计]]></description><category></category></item><item><title><![CDATA[USB 转串口（CH340G）电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157471519</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157471519</guid><author>JJRainbow</author><pubDate>Wed, 28 Jan 2026 15:23:37 +0800</pubDate><description><![CDATA[CH340G 芯片的 USB 转串口电路设计]]></description><category></category></item><item><title><![CDATA[STM32F407VGT6 核心板外部电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157396291</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157396291</guid><author>JJRainbow</author><pubDate>Mon, 26 Jan 2026 16:01:27 +0800</pubDate><description><![CDATA[STM32F407VGT6 的核心板外部电路进行详细技术说明，包含电源、时钟、存储、启动配置、调试接口、复位电路等模块的设计原理]]></description><category></category></item><item><title><![CDATA[24V电源转5V转3.3V电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157327884</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157327884</guid><author>JJRainbow</author><pubDate>Sat, 24 Jan 2026 15:29:39 +0800</pubDate><description><![CDATA[24V 输入电源 依次转换为 5V 和 3.3V 稳定输出，为系统中的 MCU 及其他数字电路提供可靠供电。]]></description><category></category></item><item><title><![CDATA[以太网接口电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157326624</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157326624</guid><author>JJRainbow</author><pubDate>Sat, 24 Jan 2026 14:04:47 +0800</pubDate><description><![CDATA[LAN8720A-CP-ABC 以太网物理层（PHY）芯片和 HR911105A 网络变压器的百兆以太网接口方案。它支持 RMII 通信接口，可实现设备的网络接入功能]]></description><category></category></item><item><title><![CDATA[ME4074BM5G 单节锂电池充电电路设计原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157295130</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157295130</guid><author>JJRainbow</author><pubDate>Fri, 23 Jan 2026 16:24:19 +0800</pubDate><description><![CDATA[ME4074BM5G 线性锂电池充电管理芯片设计，是一款专为单节锂离子 / 聚合物电池设计的低成本、高集成度充电方案。它支持 5V 输入，具备充电状态指示、电池防反接和热调节功能，可实现安全、稳定的恒流恒压充电。]]></description><category></category></item><item><title><![CDATA[SP3232EEY-L/TR RS-232 收发电路设计，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157294949</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157294949</guid><author>JJRainbow</author><pubDate>Fri, 23 Jan 2026 16:16:07 +0800</pubDate><description><![CDATA[基于芯片设计，是一款集成电荷泵的 RS-232 收发器，支持 3V~5.5V 单电源供电。它可将 UART 逻辑电平（TTL/CMOS）转换为符合 RS-232 标准的电平，实现设备间的串行通信，并通过 ESD 保护二极管提升接口抗干扰能力。]]></description><category></category></item><item><title><![CDATA[MST9220BSF 单节锂电池充电电路设计方案，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157256082</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157256082</guid><author>JJRainbow</author><pubDate>Thu, 22 Jan 2026 16:05:34 +0800</pubDate><description><![CDATA[基于 MST9220BSF 芯片设计，是一款高效率、高集成度的单节锂离子 / 聚合物电池充电方案]]></description><category></category></item><item><title><![CDATA[RS-485 收发器电路设计，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157170293</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157170293</guid><author>JJRainbow</author><pubDate>Tue, 20 Jan 2026 09:22:16 +0800</pubDate><description><![CDATA[SP3485EN-L/TR 半双工 RS-485 收发器的通信接口电路]]></description><category></category></item><item><title><![CDATA[WK2124-ISSG 四通道 UART 扩展电路原理图，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157138576</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157138576</guid><author>JJRainbow</author><pubDate>Mon, 19 Jan 2026 16:41:40 +0800</pubDate><description><![CDATA[ 基于WK2124-ISSG四通道 UART 扩展芯片，实现了通过 1 路 SPI 接口扩展出 4 路独立的 RS-485/RS-232 串口的功能。]]></description><category></category></item><item><title><![CDATA[USIM 卡接口电路技术原理图，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157138352</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157138352</guid><author>JJRainbow</author><pubDate>Mon, 19 Jan 2026 16:36:05 +0800</pubDate><description><![CDATA[USIM 卡接口电路技术原理图]]></description><category></category></item><item><title><![CDATA[HSC08K1 最小系统原理图，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157067723</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157067723</guid><author>JJRainbow</author><pubDate>Sat, 17 Jan 2026 19:54:32 +0800</pubDate><description><![CDATA[HSC08K1系列 MCU 的最小系统电路设计，包含核心供电、复位、时钟、调试 / 编程接口、用户指示及 USB 通信等功能模块。该电路可作为 HSC08K1 芯片的基础开发平台，用于快速验证和开发嵌入式应用。]]></description><category></category></item><item><title><![CDATA[TLP281 光耦隔离输入电路设计原理图，附原理图]]></title><link>https://blog.youkuaiyun.com/JJRainbow/article/details/157022757</link><guid>https://blog.youkuaiyun.com/JJRainbow/article/details/157022757</guid><author>JJRainbow</author><pubDate>Fri, 16 Jan 2026 11:28:06 +0800</pubDate><description><![CDATA[TLP281 光耦隔离输入电路设计原理图]]></description><category></category></item></channel></rss>