PW4203 is a 4.5-22V input, 2A multi-cell synchronous Buck Li-Ion battery charger, suitable forportable application. Select pin is convenient for multi-cell charging. 800 kHz synchronous buckregulator integrates of 22V rating FETs with ultra low on- resistance to achieve high efficiency andsimple circuit design.The PW4203 is available in an 8-pin SOP package, provides a very compact system solution andgood thermal conductance
標(biāo)簽： pw4203
上傳時間： 2022-02-11
上傳用戶：
PW2330 develops a high efficiency synchronous step down DC-DC converter capable of delivering3A output current. PW2330 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. PW2330 adopts the proprietary instant PWM architecture to achieve fast transient responsesfor high step down applications and high efficiency at light loads. In addition, it operates atpseudo-constant frequency of 500kHz under continuous conduction mode to minimize the size ofinductor and capacitor
標(biāo)簽： pw2330
上傳時間： 2022-02-11
上傳用戶：
The PW2312 is a high frequency, synchronous, rectified, step-down, switch-mode converter withinternal power MOSFETs. It offers a very compact solution to achieve a 1.5A peak output currentover a wide input supply range, with excellent load and line regulation.The PW2312 requires a minimal number of readily available, external components and is available ina space saving SOT23-6 package.
標(biāo)簽： pw2312
上傳時間： 2022-02-11
上傳用戶：qingfengchizhu
The PW2301A uses advanced trench It utilizes the latest processing techniques to achieve the highcell density and reduces the on-resistance with high repetitive avalanche rating. These featurescombine to make this design an extremely efficient and reliable device for use in power switchingapplication and a wide variety of other applications
標(biāo)簽： pw2301a
上傳時間： 2022-02-11
上傳用戶：
PW2205 develops a high efficiency synchronous step-down DC-DC converter capable of delivering5A output current. PW2205 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss.PW2205 adopts the instant PWM architecture to achieve fast transient responses for high step downapplications and high efficiency at light loads. In addition, it operates at pseudo-constant frequencyof 500kHz under continuous conduction mode to minimize the size of inductor and capacitor
標(biāo)簽： pw2205
上傳時間： 2022-02-11
上傳用戶：
The PW2163 is a high efficiency 500 kHz synchronous step-down DC-DC converter capable ofdelivering 3A current. The PW2163 operates over a wide input voltage range from 4.5V to 18V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500kHz switching frequency. It adopts the instant PWM architecture to achieve fast transient responsesfor high step down applications
標(biāo)簽： pw2163
上傳時間： 2022-02-11
上傳用戶：
設(shè)計了農(nóng)業(yè)溫濕度智能控制系統(tǒng),該系統(tǒng)采用DHT11溫濕度傳感器作為溫濕度采集模塊,單片機選用AT89C52代替并調(diào)用Virtual terminal模擬串口通信,LCD1604液晶顯示器實時顯示溫濕度,實現(xiàn)了溫濕度的測量、顯示,可自動控制加熱、降溫、加濕、通風(fēng),實現(xiàn)溫濕度控制以及超限報警處理,并利用Proteus與Keil進行實際電路的仿真。試驗表明,該系統(tǒng)實現(xiàn)了可靠的溫濕度監(jiān)控。We described the design of an intelligent control system of agriculture temperature and humidity.The system uses DHT11 temperature and humidity sensor as the temperature and humidity acquisition module.The SCM adopts AT89C52 to replace and call the virtual terminal for simulating serial communication.LCD1604 displays temperature and humidity in real time,which implements the measurement and display of temperature and humidity.The system is able to automatically control heating,cooling,humidification and ventilation,to achieve temperature and humidity control and over-limit alarm processing.The system also uses Proteus and Keil for actual circuit simulation.The experiment shows that the system is capable of reliable temperature and humidity monitoring.
標(biāo)簽： at89c52 溫濕度智能控制系統(tǒng)
上傳時間： 2022-03-26
上傳用戶：aben
近年來反季節(jié)種植已成火熱趨勢,溫室大棚的普及十分迅速,而溫室大棚對自動化、智能化的要求也越來越迫切,本系統(tǒng)將溫室大棚的溫濕度、二氧化碳濃度各個方面的檢測,通風(fēng)、澆灌、溫度、噴灑農(nóng)藥等各個方面的控制進行綜合系統(tǒng)研究,實現(xiàn)溫室大棚對自動化、智能化的要求。這一系統(tǒng)是基于單片機控制的智能檢測,控制系統(tǒng)包含單片機主控模塊、感應(yīng)檢測模塊、傳感模塊,顯示、控制模塊等[1]。從而提高溫室大棚的種植效率,減少勞動力,提高利潤等。In recent years,counter-season planting has become a hot trend featuring the rapid popularization of greenhouse and urgent requirement for the automation and intellectualization of greenhouse.This paper offers a comprehensive and systematic study of the monitoring of temperature,humidity and carbon dioxide concentration in the greenhouse and the control of ventilation,irrigation,temperature and pesticide spraying in order to achieve automation and intellectualization in greenhouse.This system is based on the intelligent detection controlled by single chip computer with the control system including the main control module,induction detection module,sensing module,display and control module of single chip computer,which is effective in improving planting efficiency of greenhouse,reducing labor force and increasing profits.
標(biāo)簽： 智能溫室大棚 控制系統(tǒng)
上傳時間： 2022-03-27
上傳用戶：
入室搶劫事件屢見不鮮,針對此現(xiàn)象進行分析不難發(fā)現(xiàn),造成失竊事件的極大原因是人們慵懶和意識差等不良性格造成習(xí)慣性不鎖門.本文以STC89C52單片機為基礎(chǔ),設(shè)計了一種基于人體紅外傳感器的自動關(guān)門鎖門裝置,來解決此類問題.The incidents of burglary are so common. It is not difficult to find that the main reason for the burglary is the habit of unlocking of doors caused by people's laziness and poor consciousness. Based on the single chip microcomputer of STC89C52, a device used with infrared sensor of human body is introduced in this paper, which can achieve the effect of automatic closing and locking doors.
上傳時間： 2022-03-27
上傳用戶：canderile
多功能智能遙控窗簾系統(tǒng)廣泛地應(yīng)用于家居、辦公室等場合,同時也是智能家居的一部分。該設(shè)計主要利用STC89C52單片機核心電路、光敏電阻電路、步進電機電路、溫濕度傳感器、紅外線控制電路、AD轉(zhuǎn)換電路、LCD1602液晶顯示屏等模塊完成精確控制窗簾的開和關(guān)。multi-functional intelligent remote control curtain system is widely used in home,office and other occasions,and is also part of intelligent home.The design mainly uses STC89 C52 single-chip core circuit,photosensitive resistor circuit,stepping motor circuit,temperature and humidity sensor,infrared control circuit,AD conversion circuit,LCD1602 LCD display and other modules to achieve accurate control of the curtain opening and closing.
上傳時間： 2022-03-28
上傳用戶：
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