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电源技术  具有宽输入范围的微型单片降压型稳压器

&nbsp; Automotive batteries, industrial power supplies, distributedsupplies and wall transformers are all sources ofwide-ranging high voltage inputs. The easiest way to stepdown these sources is with a high voltage monolithicstep-down regulator that can directly accept a wide inputrange and prod ...

https://www.eeworm.com/dl/505/24320.html

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电源技术  DN440多功能TFT LCD偏置电源和白光LED驱动器

&nbsp; The makers of handheld medical, industrial and consumerdevices use a wide variety of high resolution, small tomedium sized color TFT LCD displays. The power supplydesigners for these displays must contend with shrinkingboard area, tight schedules, and variations in displaytypes and featur ...

https://www.eeworm.com/dl/505/24327.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  DN465 超低功耗升压转换器

&nbsp; Industrial remote monitoring systems and keep-alivecircuits spend most of their time in standby mode. Manyof these systems also depend on battery power, so powersupply effi ciency in standby state is very important tomaximize battery life. The LT&reg;8410/-1 high effi ciencyboost converte ...

https://www.eeworm.com/dl/505/24331.html

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电源技术  自举偏置高输入电压降压型控制器

&nbsp; High voltage buck DC/DC controllers such as the LTC3890(dual output) and LTC3891 (single output) are popular inautomotive applications due to their extremely wide 4V to60V input voltage range, eliminating the need for a snubberand voltage suppression circuitry. These controllersare also w ...

https://www.eeworm.com/dl/505/24347.html

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电源技术  信号源,调节器和电源电路分析

&nbsp; Occasionally, we are tasked with designing circuitry for aspecific purpose. The request may have customer originsor it may be an in-house requirement. Alternately, a circuitmay be developed because its possibility is simply tooattractive to ignore1. Over time, these circuits accumulate,en ...

https://www.eeworm.com/dl/505/24377.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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单片机编程  基于MSP430F247和TMP275的测温仪

介绍了一种TI公司最新推出的MSP430F247单片机，利用它自带的I2C模块驱动I2C总线的温度传感器TMP275。TMP275是一款具有高精度、低功耗的新型温度传感器。由于TMP275具有可编程功能，纤小的封装以及极大的温度范围，因而广泛应用于组建超小型温度测量装置。 Abstract: &nbsp;A new single chip microcomputer MSP430F247 w ...

https://www.eeworm.com/dl/502/29213.html

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单片机编程  基于单总线器件DS18B20的温度测量仪

针对目前采用的热敏电阻测量方法，提出了采用单总线数字式温度传感器DS18B20和单片机组成的新型温度测量仪。介绍DS18B20的结构和工作原理，以及单总线工作原理，给出了由Mega8单片机和DS18B20构成的单总线温度测量仪的硬件电路及软件流程图。经试验基于单总线器件DS18B20的温度测量仪，具有测量准确、测温范围宽、体积小、 ...

https://www.eeworm.com/dl/502/29320.html

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单片机编程  基于C8051F系列单片机的无线收发电路设计

基于幅移键控技术ASK（Amplitude-Shift Keying），以C8051F340单片机作为监测终端控制器，C8051F330D单片机作为探测节点控制器，采用半双工的通信方式，通过监控终端和探测节点的无线收发电路，实现数据的双向无线传输。收发电路采用直径为0.8 mm的漆包线自行绕制成圆形空心线圈天线，天线直径为（3.4±0.3）cm。试验表明， ...

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