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电源技术  高功率PoE PD接口与集成反激式控制器

&nbsp; To this day, Power over Ethernet (PoE) continues to gainpopularity in today&rsquo;s networking world. The 12.95Wdelivered to the Powered Device (PD) input supplied bythe Power Sourcing Equipment (PSE) is a universal supply.Each PD provides its own DC/DC conversion from anominal 48V supply ...

https://www.eeworm.com/dl/505/24317.html

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电源技术  按键开关控制器简化系统设计

&nbsp; Handheld designers often grapple with ways to de-bounceand control the on/off pushbutton of portable devices.Traditional de-bounce designs use discrete logic, fl ipflops, resistors and capacitors. Other designs includean onboard microprocessor and discrete comparatorswhich continuously co ...

https://www.eeworm.com/dl/505/24326.html

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电源技术  DN436微型全桥压电马达驱动器

&nbsp; Piezoelectric motors are used in digital cameras for autofocus,zooming and optical image stabilization. Theyare relatively small, lightweight and effi cient, but theyalso require a complicated driving scheme. Traditionally,this challenge has been met with the use ofseparatecircuits, inclu ...

https://www.eeworm.com/dl/505/24328.html

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电源技术  太阳能电池板电池充电技术手册

&nbsp; Advances in low power electronics now allow placementof battery-powered sensors and other devices in locationsfar from the power grid. Ideally, for true grid independence,the batteries should not need replacement, but instead berecharged using locally available renewable energy, suchas so ...

https://www.eeworm.com/dl/505/24334.html

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电源技术  高电流便携式产品的电池充电器方案

&nbsp; The LTC&reg;4155 and LTC4156 are dual multiplexed-inputbattery chargers with PowerPath&trade; control, featuring I2Cprogrammability and USB On-The-Go for systems suchas tablet PCs and other high power density applications.The LTC4155&rsquo;s float voltage (VFLOAT) range is optimizedfor Li ...

https://www.eeworm.com/dl/505/24346.html

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电源技术  LTC4099 USB电源管理和电池充电

&nbsp; The LTC&reg;4099 high effi ciency USB power manager andLi-Ion/Polymer battery charger seamlessly managespower distribution from multiple sources in portableapplications. It is differentiated from other USB powermanagers by its bidirectional I2C port that allows the hostmicroprocessor to c ...

https://www.eeworm.com/dl/505/24349.html

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电源技术  OPTI-LOOP架构降低输出电容和改善瞬态响应

&nbsp; Removing output capacitors saves money and boardspace. Linear Technology&rsquo;s OPTI-LOOPTM architectureallows you to use the output capacitors of your choice andcompensate the control loop for optimum transientresponse and loop stability. Figure 1 shows the dramaticimprovement possible ...

https://www.eeworm.com/dl/505/24385.html

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电源技术  LTC6994参考设计及PCB布线规则

Demonstration circuit 1562A is an engineering toolto design and evaluate the LTC699X-X family ofTimerBlox circuits. The center section of the boardcontains a pre-configured TimerBlox function.DC1562A comes in twelve timing function variationsas outlined in Table 1.Surrounding the center board is a ...

https://www.eeworm.com/dl/505/24888.html

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单片机编程  基于AVR的PCB板雕刻机的设计

　　为了提高PCB板制作的效率，改变传统的化学腐蚀制板工艺，使用机械仿形铣制作电路板的方法，设计了以ATMEGA16单片机为核心部件的PCB板雕刻机控制系统。其中包括PCB雕刻机的基本功能、主要硬件电路设计和软件的实现流程，并给出了相关设计电路。重点分析了雕刻机步进电机的驱动电路以及主轴电机的驱动电路，该雕刻机经 ...

https://www.eeworm.com/dl/502/29057.html

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单片机编程  基于8098单片机的SPWM变频调速系统

　　数字控制的交流调速系统所选用的微处理器、功率器件及产生PWM波的方法是影响交流调速系统性能好坏的直接因素。在介绍了正弦脉宽调制(SPWM)技术的基础上，设计了一种以8098单片机作为控制器，以智能功率模块IPM为开关器件的变频调速系统。通过软件编程，产生正弦脉冲宽度调制波形来控制绝缘栅双极晶体管的导通和关断， ...

https://www.eeworm.com/dl/502/29059.html

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