欠压保护

新型发电机组过欠压保护电路分析

Analysis of over voltage and under voltage protection circuit of new generator set

其中包括：带隙基准源、偏置电路、误差放大器、振荡器、PWM比较器、过温和欠压保护电路、逻辑控制等部分。

Such as : band gap reference voltage , the bias circuit , error amplifier , oscillator , PWM comparator , over thermal protection , under voltage protection , logic control part .

一种CMOS欠压保护电路的设计

Design of a CMOS Short - voltage Safe guard Circuit

由于IPM自带欠压保护、短路保护功能，增加了系统抗干扰能力。

The system antijamming ability is increased because IPM has under_voltage protection and short circuit protection built_in .

交直流掉电预警及过、欠压保护直流在线式UPS电源智能仪表集散系统的防雷技术

An on line DC uninterruptable power supply ( ups ) with functions of ac / dc power fail warning and AC power overvoltage / undervoltage transcient overvoltage protection technology for the distributed system of intelligent instruments

以LKJ2000型监控电源插件为例，介绍模块化电源的功能，阐述了模块化电源的过压、欠压保护电路的工作原理及各路输出过流保护电路的工作原理。

Taking the power board of type LKJ2000train monitoring and recording device as an example , the paper describes the function of the modular power supply .

接着还设计了欠压保护电路和时钟产生电路。

Then also designed undervoltage protection circuit and Clock Generation Circuit .

采用外接输出采样电阻的方式，实现输出电压的可编程。芯片内设过热保护和欠压保护，以实现电路的可靠性操作。

The sensor resistor is externally connected , which realize output voltage programmable .

一种过压欠压保护器的分析及其新应用

Analysis of a Kind of Overvoltage or Undervoltage Protector and Its New Application

保护电路主要涉及到过流保护、过热保护、过压以及欠压保护等。

The safeguard circuit mainly consists of over-current , over-heat , over-voltage and low-voltage circuits .

它具有必行不失真，性能可靠，具有过呀，欠压保护功能；

It has the inevitable distortion , reliable performance , with over-ah , under-voltage protection function ;

为了保证电路安全工作，还设计了过压保护电路和输出欠压保护电路。

In order to guarantee circuit work safety , also designed the over-voltage protection circuit and output voltage protection circuit .

实现直流系统过、欠压保护及电压显示的组合，装置的集成度非常高。

DC system had to achieve , under-voltage protection and voltage show a combination of device integration is very high .

本文详细地介绍了电磁阀的结构、工作原理、超欠压保护和远程控制功能的实现。

The paper detailedly introduces electromagnetic valve 's composition , operating principle and the fulfillment of over-under pressure protection and remote control .

此外，芯片还具有欠压保护、过压保护、过温保护等功能以及关断工作模式。

Beside , lots of protection circuits are integrated in the chip , such as under voltage lockout , over voltage protection , thermal shutdown , and so on .

介绍了一种用于低压配电系统的智能型功率因数自动补偿控制器，并提出了以三相电压为判据的欠压保护方案。

An intelligent controller of power-factor automatic compensation used in low voltage power system is introduced , and an under voltage protective scheme based on there phase voltage is presented .

为了消除浪涌电流和降低输入电压的要求，电路具有软启动功能；同时通过过压、欠压保护电路防止了电压过高和过低的情况发生。

In order to eliminate surge current and reduce the input voltage , with soft start-up circuit function , And through overvoltage and lowvoltage protection to prevent the higher or lower voltage happens .

文中对开、关机的过渡过程进行了分析，还介绍了有关欠压保护、硬件开机延时及其它保护电路的设计。

The paper analyses the transition process from start to shut of the system , and deals with the under-voltage protection , hardware start delay and the design of some other protection circuits .

其保护系统的硬件设计包括直流电源、缺相检测、电压采样、电流采样、过欠压保护电路、数字I／O口和串口通信的设计。

The hardware design of the protection system , including DC power , phase detection , the voltage and current sampling , over-voltage protection circuit , digital I / O and serial communication design .

研究了光伏水泵系统的多种智能保护措施并予实现，其中含井水打干自动识别保护系统；低速、过载、欠压保护系统；防雷保护系统等。

Some necessary protective measures with artificial intelligence for PV water pumping systems are developed and realized , including dry operation identification , low speed , over load , low voltage operation and lightning protection etc.

此外，在原有硬件平台上，针对实际应用问题，完善系统的保护，主要包括过流保护、过欠压保护和相序错误等。

In addition , the protection measures was designed to improve of the system , including over-current protection , over-voltage protection and phase sequence error , based on the original hardware platform for the practical application .

在设备保护方面，主要对发电机的欠压保护、过压保护、过载保护、逆功率保护和变压器的电流速断保护和过电流保护作了阐述。

On the aspect of equipment protection , low-voltage protection , high-voltage protection , over-load protection and reverse-power protection are adopted for the generator , and instantaneous current protection and over-current protection are adopted for the transformer .

电源驱动模块：主要提供各个模块的电源，驱动被控设备，实现主控模块的意图，并能实现继电器的过零保护，过流、过压、欠压保护；

Power device module which provides power of all modules and drives control equipments to accomplish intention of main control module and can provide zero crossing protection circuit , excess voltage and under voltage protection circuit and excess current protection circuit ;

同时，本课题还设计了给定、反馈闭环调节系统以及过流、过热、欠压保护电路，真正实现了自动调节、故障显示和诊断能力。

Meanwhile , this subject including the design of the circuit of control index setting , feedback close loop control circuit , current foldback circuit , overheat and low-voltage protection circuit , have really realized the functions of self-regulation , trouble diagnoses and display .

在实际设计中，硬件部分主要考虑信号的隔离，驱动电路，电池欠压保护和电路过流保护（包括主电路和电机电路）等；

In fact , as far as hardware is concerned , it pay more attention to isolation of signal , drive circuit , protection of low voltage of battery and protection of current overload of circuit ( including main circuit and motor circuit ) etc.

分析了各部分的工作原理并给出了程序流程图、远程操作界面和部分代码，实现了外部驱动，恒流充电，过压保护，过流保护和欠压保护等功能。

Furthermore , it analyses the various parts of working principle , shows the process flow chart , the remote surveillance view and part of the procedure code , and realizes the PLC external driver , inalterable current charge , over-voltage protection , over-current protection and under-voltage protection .

对其中的设计重点单片IC进行了优化设计，使之不仅具有通常的驱动和过流、短路、过热、欠压等保护功能，而且保护电路本身具有延时智能处理的功能。

The monolithic IC is designed to have not only the functions of drive , over current protection , short circuit protection and so on , but the function of delay intelligent control .

同时，本芯片还具有过流、过温、过载、过压、欠压等保护功能，当电路发生异常时，关断整个电路。

At the same time , the chip also has over-current protection , over-temperature protection , over-load protection , over-voltage protection and under-voltage protection . So when the chip in a abnormal state , the circuit cuts off immediately .

该电路具有完备的输入欠压/过压保护、输出过流/过压保护和过热保护等功能。

The converter has the functions of line under-voltage detection , output over-voltage protection and output current limit protection , etc.

出于对产品安全性的考虑在设计的过程中增加了输入欠压、过压保护，输入反接保护，输出过功率，输出短路保护，过温保护。

To avoid the safety issue , during the design progress , several protection circuits are added like the input under voltage 、 over voltage protection , polarity protection , output over power protection 、 short circuit protection 、 over temperature protection .