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电子发烧友网>电源/新能源>电源设计应用>

选择合适的系列电压基准源的绝对精度电压输出数模转换器设计-S

选择合适的系列电压基准源的绝对精度电压输出数模转换器设计-S

Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important parameters such as: input supply voltage, refe...

2009-05-06 标签: 749

选择最佳的电压基准源

选择最佳的电压基准源

摘要:电压基准源简单、稳定的基准电压,作为电路设计的一个关键因素,电压基准源的选择需要考虑多方面的问题并作出折衷。本文讨论了不同类型的电压基准源以及它们的关键...

2009-05-06 标签: 665

模拟集成电路的低电压系统-Analog ICs for Lo

模拟集成电路的低电压系统-Analog ICs for Lo

Abstract: This article about low-voltage ICs discusses many types of low-voltage ICs, including voltage regulators, data converters, op amps and current monitors, comparators, microprocessor supervisors, voltage references, analog switches...

2009-05-06 标签:集成电路 872

Keep Power Consumption in Chec

Keep Power Consumption in Chec

Abstract: Portable electronic devices usually include a single 3- or 4-connector jack which can be a stereo headphone jack, a mono headphone jack with microphone input and hook switch, or a stereo headphone jack with microphone/hook-switch...

2009-05-06 标签:Low-Power 1167

保护电流检测放大器反对过压瞬变-Protect Curren

保护电流检测放大器反对过压瞬变-Protect Curren

Abstract: This application note describes methods of protecting lower-voltage current sense amplifiers from high-voltage spikes and transients. Such conditions are frequently encountered in automotive car battery operation, and are referre...

2009-05-06 标签:放大器电流 889

峰值采样电路在涡流电导仪中的应用

峰值采样电路在涡流电导仪中的应用

介绍了利用单片机中断功能,结合峰值采样电路对涡流正弦信号进行峰值检波的方法,该方法适用范围广,具有较好的实用性。?    关键词:峰值采样, 单片机,  中...

2009-05-05 标签:采样电路电导仪采样电路 2076

Calculate Ratiometric Outputs

Calculate Ratiometric Outputs

Abstract: The DS1802 is a dual audio taper-potentiometer with logarithmic resistive characteristics over the device range. Each potentiometer provides 65 wiper positions with a 1dB increment per step and device mute with at least 90dB of a...

2009-05-05 标签:DS1802 2024

世界各国泄漏电流的安全规范

世界各国泄漏电流的安全规范

世界各国泄漏电流的安全规范 说明:1、泄漏电流直接和电...

2009-05-05 标签:电流 3742

人体各部位电阻实测例子及电阻表

人体各部位电阻实测例子及电阻表

人体各部位电阻实测例子及电阻表 由以上人体对电流的反应和人体...

2009-05-05 标签:人体 6116

人体对电流的反应

人体对电流的反应

人体对电流的反应 一般人体能感觉到刺激的电流值大约是1 mA,,当人体通过5~20mA...

2009-05-05 标签:电流人体 5464

基于MODBUS通信协议的低压交流配电柜智能监控系统

基于MODBUS通信协议的低压交流配电柜智能监控系统

基于MODBUS通信协议的低压交流配电柜智能监控系统 介绍了一种基于MODBUS协议的低压开关柜智能监测系统:以工控机为主站,带协议接口的智能控制...

2009-05-04 标签:MODBUSMODBUS通信协 1918

可满载启动的开关型转换器

可满载启动的开关型转换器

摘要:本文介绍的启动电路由微处理器(µP)监控电路MAX809L和电荷泵组成,用于监视升压转换器的输出电压。高效升压控制器MAX608用于提升输出电压,电荷泵电路受监控电路MAX809L...

2009-05-04 标签:转换器 636

3.3V Supply Taps Power from th

3.3V Supply Taps Power from th

Additional Information: Quick View Data Sheet for the MAX668 Samples and Literature Order Form Technical Support: PowerThe backplanes of popular multisupply buses (such as VME, VXI, an...

2009-05-04 标签:PCI 1344

监测集成电路监控电池供电设备-Supervisor ICs

监测集成电路监控电池供电设备-Supervisor ICs

Abstract: To ensure correct operation, most microprocessor-based systems require supervision during power-up and power-down, and when entering or exiting shutdown or sleep mode. The supervisor may only provide a power-on reset, or it may o...

2009-05-04 标签:集成电路 1267

Step-up Converter with LDO Bea

Step-up Converter with LDO Bea

Abstract: A step-up converter followed by an LDO regulator offers better battery life than a classic SEPIC design when operating from one lithium-ion cell. This is demonstrated with the MAX1800 multi-channel digital camera power IC for the...

2009-05-04 标签:ldo 2980

MAX6652监控系统结合电压监测与温度传感-MAX6652

MAX6652监控系统结合电压监测与温度传感-MAX6652

Abstract: The MAX6652 temperature sensor combines voltage and overtemperature monitoring into a single integrated circuit. This device features an 8-bit analog-to-digital converter (ADC) for monitoring four window voltages with programmabl...

2009-05-04 标签:MAX6652 846

SLIC电源设计-SLIC Power-Supply Des

SLIC电源设计-SLIC Power-Supply Des

Abstract: Integrated communication systems incorporate voice service with data service. Such systems use subscriber-line interface card (SLIC) functions to maintain compatibility with legacy equipment. The voltages required in these system...

2009-05-04 标签:SLIC 2734

高侧电流检测的测量:集成电路和原则-High-Side Cu

高侧电流检测的测量:集成电路和原则-High-Side Cu

Abstract: This application note describes the use of current sense amplifiers, differential amplifiers and instrumentation amplifiers to measure battery charge and discharge currents in portable equipment, computer notebooks and USB access...

2009-05-04 标签:集成电路 1753

直流转换无电感器-DC/DC Conversion with

直流转换无电感器-DC/DC Conversion with

Abstract: Charge pumps are often the best choice for powering an application requiring a combination of low power and low cost. This article discusses the integrated charge pumps available in the market today. It also explains how to calcu...

2009-05-04 标签:Conversion 1620

升压控制器形式负降压稳压-Step-Up Controlle

升压控制器形式负降压稳压-Step-Up Controlle

Positive step-down switching regulators are common, but the complementary negative step-down function (converting a negative voltage to a smaller negative voltage) is rare by comparison. Figure 1 shows a negative step-down switchin...

2009-05-04 标签:控制器 762

过电压保护汽车系统-Overvoltage Protecti

过电压保护汽车系统-Overvoltage Protecti

Abstract: Vehicle electronics system components such as sensors and actuators require protection against over voltage, transient voltage and reverse voltage conditions. This application note discusses some discrete circuit protection schem...

2009-05-04 标签:电压 894

Reset Circuit Ensures Valid Su

Reset Circuit Ensures Valid Su

Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection circuit during po...

2009-05-04 标签:CircCircreset 1425

模拟电路生成凡速度控制-Circuit Generates

模拟电路生成凡速度控制-Circuit Generates

Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable supply voltage for the fan. Fan noise is becoming a larger issue as more electronic equipment enters the off...

2009-05-04 标签:模拟电路 931

Switching Between Battery and

Switching Between Battery and

Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...

2009-05-04 标签:Switching 1853

小型高电压升压转换器-Small High-Voltage

小型高电压升压转换器-Small High-Voltage

The biasing of avalanche photodiodes (APDs), piezoelectric transducers (PZTs), vacuum fluorescent displays (VFDs), and microelectromechanical systems (MEMS) require high-voltage power supplies. This app note presents three topologies (Figu...

2009-05-04 标签:转换器 2649

理想性因数补偿和串联电阻差异热感二极管-Compensati

理想性因数补偿和串联电阻差异热感二极管-Compensati

Abstract: When using an external thermal diode to measure temperature, the accuracy of the temperature measurement depends on the characteristics of the external diode. Two critical parameters that affect measurement accuracy are ideality ...

2009-05-04 标签:串联二极管 899

Convert the MAX1937/8/9 from L

Convert the MAX1937/8/9 from L

To prevent excessive power dissipation during output short circuit, the MAX1937/MAX1938/MAX1939 provide a latch off feature under either short circuit or under-voltage-lockout condition. Once the output is latched off either the input or t...

2009-05-04 标签:MAX1937 745

新增高电压能力的MAX471/MAX472高侧电流检测放大器

新增高电压能力的MAX471/MAX472高侧电流检测放大器

Abstract: An avalanche diode and current source provide a floating power supply to allow high-side current sense amplifiers to work at up to 300V. The MAX471 and MAX472 are complete bi-directional high-side current sense ...

2009-05-04 标签:MAX471 2465

选择最佳的电压基准源

选择最佳的电压基准源

摘要:电压基准源简单、稳定的基准电压,作为电路设计的一个关键因素,电压基准源的选择需要考虑多方面的问题并作出折衷。本文讨论了不同类型的电压基准源以及它们的关键...

2009-05-03 标签: 659

全陶瓷电容设计的降压/反相型3A、+/-5V电源

全陶瓷电容设计的降压/反相型3A、+/-5V电源

摘要:MAX8538双路同步buck控制器能够提供3A的+5V、-5V输出。利用一个控制器作为同步整流降压(buck)转换,而另一个通过变压器输出负压。电路支持软启动和软关断。 这里...

2009-05-03 标签:电容 975

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