<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[wangmaoquan163的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/wangmaoquan163</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; wangmaoquan163]]></copyright><item><title><![CDATA[什么是IMEI号，IMEI号详解]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/164625999</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/164625999</guid><author>wangmaoquan163</author><pubDate>Tue, 08 Sep 2026 16:49:09 +0800</pubDate><description><![CDATA[什么是imei号]]></description><category></category></item><item><title><![CDATA[一种高灵敏度全极性闩锁输出霍尔开关芯片介绍CC6207E]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/164586058</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/164586058</guid><author>wangmaoquan163</author><pubDate>Tue, 08 Sep 2026 11:02:20 +0800</pubDate><description><![CDATA[介绍一种霍尔开关芯片]]></description><category></category></item><item><title><![CDATA[微信支付里面的钱冻结，待分账，如何处理。]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/164583642</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/164583642</guid><author>wangmaoquan163</author><pubDate>Tue, 08 Sep 2026 10:51:10 +0800</pubDate><description><![CDATA[内容是关于微信支付待分账冻结资金的处理方法。]]></description><category></category></item><item><title><![CDATA[PI型衰减值参考]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/161883420</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/161883420</guid><author>wangmaoquan163</author><pubDate>Thu, 11 Jun 2026 10:11:53 +0800</pubDate><description><![CDATA[pi衰减值参考图]]></description><category></category></item><item><title><![CDATA[三极管在电路中的应用]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/150116367</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/150116367</guid><author>wangmaoquan163</author><pubDate>Sat, 09 Aug 2025 21:51:51 +0800</pubDate><description><![CDATA[三极管在电路中的应用]]></description><category></category></item><item><title><![CDATA[单端/差分转化电路]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149585614</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149585614</guid><author>wangmaoquan163</author><pubDate>Wed, 23 Jul 2025 23:25:07 +0800</pubDate><description><![CDATA[单端/差分转化电路]]></description><category></category></item><item><title><![CDATA[单片机GPIO驱动能力：为何“灌”比“推”更给力？]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149433393</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149433393</guid><author>wangmaoquan163</author><pubDate>Fri, 18 Jul 2025 00:33:43 +0800</pubDate><description><![CDATA[单片机GPIO驱动能力：为何“灌”比“推”更给力？]]></description><category></category></item><item><title><![CDATA[DCDC电源芯片的引脚功能及作用介绍]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149433321</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149433321</guid><author>wangmaoquan163</author><pubDate>Fri, 18 Jul 2025 00:22:04 +0800</pubDate><description><![CDATA[DCDC电源芯片的引脚功能及作用介绍]]></description><category></category></item><item><title><![CDATA[CAN终端电阻为什么是60R+60R，而不直接用120R？]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149335556</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149335556</guid><author>wangmaoquan163</author><pubDate>Mon, 14 Jul 2025 17:34:18 +0800</pubDate><description><![CDATA[CAN终端电阻为什么是60R+60R，而不直接用120R？]]></description><category></category></item><item><title><![CDATA[MOSFET驱动电路设计时，为什么“慢”开，“快”关？]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149300098</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149300098</guid><author>wangmaoquan163</author><pubDate>Sat, 12 Jul 2025 21:14:57 +0800</pubDate><description><![CDATA[摘要：MOSFET开关电路中采用&quot;慢开快关&quot;原则，慢开可降低di/dt，减少寄生电感引起的电压尖峰和EMI干扰，但会增加导通损耗；快关则能显著减小关断损耗，避免误导通。实际设计中需权衡开关速度，高频应用需优化以平衡效率和可靠性。这一原则基于MOSFET的栅极电容充放电特性，通过控制栅极电阻调节开关速度，在保证安全的同时提升电路性能。（149字）]]></description><category></category></item><item><title><![CDATA[余电快速泄放电路]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149299610</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149299610</guid><author>wangmaoquan163</author><pubDate>Sat, 12 Jul 2025 20:36:13 +0800</pubDate><description><![CDATA[余电快速泄放电路]]></description><category></category></item><item><title><![CDATA[常用视频接口]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149285569</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149285569</guid><author>wangmaoquan163</author><pubDate>Sat, 12 Jul 2025 00:19:26 +0800</pubDate><description><![CDATA[常用视频接口]]></description><category></category></item><item><title><![CDATA[如何测家里是否漏电，4种方法]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149260302</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149260302</guid><author>wangmaoquan163</author><pubDate>Thu, 10 Jul 2025 22:53:42 +0800</pubDate><description><![CDATA[如何测家里是否漏电，4种方法]]></description><category></category></item><item><title><![CDATA[噪音到10µVRMS 以下的DC-DC:TPS62913]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149260219</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149260219</guid><author>wangmaoquan163</author><pubDate>Thu, 10 Jul 2025 22:46:31 +0800</pubDate><description><![CDATA[噪音到10µVRMS 以下的DC-DC:TPS62913]]></description><category></category></item><item><title><![CDATA[大厂推荐：RS485接口电路如何设计？]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149127670</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149127670</guid><author>wangmaoquan163</author><pubDate>Sat, 05 Jul 2025 01:21:02 +0800</pubDate><description><![CDATA[本文介绍了RS485接口电路的EMC防护设计要点。方案采用三级防护电路设计：第一级使用气体放电管抑制浪涌干扰，第二级采用热敏电阻，第三级选用半导体放电管。电路滤波设计包含共模电感（1000Ω/100MHz）和滤波电容（100pF典型值），并强调接口地与数字地的1000pF跨接电容。PCB布局要求隔离带掏空处理，禁止高速信号布线。针对金属/非金属外壳设备，分别给出了不同的接地处理方案。该设计满足6KV防雷标准，有效解决了RS485接口在混合布线环境中的EMC问题。]]></description><category></category></item><item><title><![CDATA[常用MOS管到的使用]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149127620</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149127620</guid><author>wangmaoquan163</author><pubDate>Sat, 05 Jul 2025 01:12:34 +0800</pubDate><description><![CDATA[MOS管的导通条件取决于沟道类型：N沟道需UG&gt;US，P沟道需UG&lt;US。导通电压阈值因类型而异：信号切换用NMOS（如2N7002系列）只需3-5V压差即可导通；而电压通断用NMOS（如AOL1448等）需10V以上压差且需饱和导通。PMOS的导通条件与NMOS相反。实际应用中需根据具体型号确定导通电压，笔记本主板上不同类型的MOS管需满足相应导通条件才能正常工作。]]></description><category></category></item><item><title><![CDATA[什么是PWM“死区”！]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149105741</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149105741</guid><author>wangmaoquan163</author><pubDate>Fri, 04 Jul 2025 00:47:42 +0800</pubDate><description><![CDATA[摘要： PWM（脉宽调制）通过调节方波占空比控制输出电压，广泛应用于整流和逆变电路。为防止H桥上下管同时导通导致短路，需设置“死区时间”——在关闭一个管后延迟开启另一个管的保护时段。死区时间虽影响波形连续性，但对纹波影响有限。PWM占空比决定了输出平均电压（如20%占空比即20%高电平时间），分辨率取决于位数（如8位PWM为1:255）。频率与计数周期相关，如16位PWM需计数至65535以实现高精度。该技术对电机控制等大功率应用至关重要。]]></description><category></category></item><item><title><![CDATA[EMC影响三极管驱动]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149105657</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/149105657</guid><author>wangmaoquan163</author><pubDate>Fri, 04 Jul 2025 00:38:47 +0800</pubDate><description><![CDATA[摘要：某产品在EMC测试中出现信号灯乱闪问题，分析发现是由于8050三极管导通电压过低（0.5V开始导通，0.8V即达开关状态），导致干扰信号引发误触发。整改方案包括：将基极电阻改为10K并增加3K下拉电阻形成分压（3.3V输出时Vbe=0.76V），加装0.1uF滤波电容吸收干扰。改进后三极管具有更可靠的关断特性：1）确保无信号时可靠截止；2）将导通电压阈值从0.7V提升至2V；3）增强抗干扰能力；4）限流保护；5）加速放电改善开关速度。经测试有效解决了EMC问题。]]></description><category></category></item><item><title><![CDATA[为什么屏蔽层要单端接地]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/148702577</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/148702577</guid><author>wangmaoquan163</author><pubDate>Mon, 16 Jun 2025 23:06:29 +0800</pubDate><description><![CDATA[为什么屏蔽层要单端接地]]></description><category></category></item><item><title><![CDATA[为什么晶振电路要并联1MΩ电阻？为什么有的并联了，有的又没有？]]></title><link>https://blog.youkuaiyun.com/wangmaoquan163/article/details/148702410</link><guid>https://blog.youkuaiyun.com/wangmaoquan163/article/details/148702410</guid><author>wangmaoquan163</author><pubDate>Mon, 16 Jun 2025 22:53:11 +0800</pubDate><description><![CDATA[为什么晶振电路要并联1MΩ电阻？为什么有的并联了，有的又没有？]]></description><category></category></item></channel></rss>