搜索：Electronic - 虫虫下载站

电源技术  超级电容器备用电源系统的手持设备数据保护

&nbsp; Handheld electronic devices play a key role in our everydaylives. Because dependability is paramount, handhelds arecarefully engineered with lightweight power sources forreliable use under normal conditions. But no amount ofcareful engineering can prevent the mistreatment theywill undergo ...

https://www.eeworm.com/dl/505/24348.html

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电源技术  利用高压看门狗定时器加强汽车安全系统

&nbsp; Abstract: As electronic systems take over many of the mechanical functions in a car&mdash;ranging from engine timing to steering andbraking&mdash;there is a growing concern about fault tolerance. There should not be a single point of failure that would prevent a car fromat least "limping" ...

https://www.eeworm.com/dl/505/24368.html

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电源技术  具有100uV输出噪声的单片开关稳压器

&nbsp; Size, output flexibility and efficiency advantages havemade switching regulators common in electronic apparatus.The continued emphasis on these attributes hasresulted in circuitry with 95% efficiency that requiresminimal board area. Although these advantages are welcome,they necessitate c ...

https://www.eeworm.com/dl/505/24380.html

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电源技术  Circuitry for Single Cell Operation

&nbsp; Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for batteryoperation. In some circumstances,due to space, power or reliability considerations,it is pre ...

https://www.eeworm.com/dl/505/24408.html

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电源技术  电源滤波器POWER LINE FILTERS

应用 APPLICATIONS·电视机、录像机、音频设备、显示器、复印机、打印装置、游戏机及计算机等。·用于开关电源线性滤波器。·削除 TV、VTR、VCR及监听器泄漏杂音。·用于OA 设备、通信设备和其它器件。·TV set, recorder, sound-frequency equipment, show-scope, photocopy-scope, typewrite equipment, recreation-scope ...

https://www.eeworm.com/dl/505/24759.html

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单片机编程  基于89C52的二极管特性测试器的设计

　　利用单片机具有的智能程序控制的特点，设计了基于STC89C52单片机的"二极管特性测试器"，可对二极管一般特性进行快速测试。通过稳定线性电流源给二极管加载恒定电流，然后由高精度模数转换器测试其压降，以此为基础可判断二极管好坏、检测二极管极性和测试二极管伏安特性等，避免了用万用表测试只能测得极性而不知其特 ...

https://www.eeworm.com/dl/502/29065.html

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单片机编程  MAXX9257 MAX9258芯片可编程SerDes持续时间计算

The MAX9257/MAX9258 programmable serializer/deserializer (SerDes) devices transfer both video data and control signals over the same twisted-pair cable. However, control data can only be transmitted during the vertical blank time, which is indicated by the control-channel-enabled output (CCEN) sig ...

https://www.eeworm.com/dl/502/29069.html

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单片机编程  基于AVR单片机Mega16的电子时钟设计

Mega16是一款采用先进RISC精简指令，内置A/D的8位单片机，可支持低电压联机 Flash和EEPROM 写入功能；同时还支持 Basic和C 等高级语言编程。用它设计电子时钟不仅成本低，硬件简单，而且很容易实现系统移植。介绍了如何利用AVR系列单片机Mega16及1602字符液晶来设计电子时钟的方法，同时给出了相应的电路原理及部分语言程序 ...

https://www.eeworm.com/dl/502/29304.html

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单片机编程  基于ATmega48单片机的可调交流电子负载的设计

介绍一种无极可调交流电子负载设计的新方法，由ATmega48单片机输出PWM波，通过上位机设定不同的占空比控制场效应管的通断时间，即改变流过场效应管的平均电流。根据电流的大小，可以等效为相应的负载，并将采集的电流值显示在上位机上。文中对该系统的软﹑硬件设计思路作了详细的分析，阐述了其设计原理。 &nbsp; Abstract ...

https://www.eeworm.com/dl/502/29312.html

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单片机编程  LS7266R1在电子式万能材料试验机中的应用

针对材料试验机等设备中要求测量或控制材料拉伸或压缩的位移，一般采用光电轴角编码器检测位置信号，输出正交编码脉冲信号。若采用其他方法检测位置信号，必然导致电路设计复杂，可靠性降低。因此，提出一种基于LS7266R1的电子式万能材料试验机设计方案。给出了试验机中的控制器工作原理，LS7266R1与单片机的接口硬件设计， ...

https://www.eeworm.com/dl/502/29324.html

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