The PW8205A8TS is the highest performance trench N-ch MOSFETs with extreme high cell density,which provide excellent RDSON and gate charge for most of the small power switching and loadswitch applications. The meet the RoHS and Product requirement with full function reliabilityapproved .
標(biāo)簽： 8205a8
上傳時(shí)間： 2022-02-14
上傳用戶：wangshoupeng199
Agilent 34401A Service Guide.pdfIEC Measurement Category II includes electrical devices connected to mains at an outlet on a branch circuit. Such devices include most small appliances, test equipment, and other devices that plug into a branch outlet or socket. The 34401A may be used to make measurements with the HI and LO inputs connected to mains in such devices, or to the branch outlet itself (up to 300 VAC). However, the 34401A may not be used with its HI and LO inputs connected to mains in permanently installed electrical devices such as the main circuit-breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices and circuits are subject to overvoltages that may exceed the protection limits of the 34401A. Note: Voltages above 300 VAC may be measured only in circuits that are isolated from mains. However, transient overvoltages are also present on circuits that are isolated from mains. The Agilent 34401A are designed to safely withstand occasional transient overvoltages up to 2500 Vpk. Do not use this equipment to measure circuits where transient overvoltages could exceed this level. Additional Notices Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC This product complies with the WEEE Directive (2002/96/EC) marking requirement. The affixed product label (see below) indicates that you must not discard this electrical/electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a "Monitoring and Control instrumentation" product. Do not dispose in domestic household waste. To return unwanted products, contact your local Agilent office, or see www.agilent.com/environment/product for more information. Agilent 34138A Test Lead Set The Agilent 34401A is compatible with the Agilent 34138A Test Lead Set described below. Test Lead Ratings Test Leads - 1000V, 15A Fine Tip Probe Attachments - 300V, 3A Mini Grabber Attachment - 300V, 3A SMT Grabber Attachments - 300V, 3A Operation The Fine Tip, Mini Grabber, and SMT Grabber attachments plug onto the probe end of the Test Leads. Maintenance If any portion of the Test Lead Set is worn or damaged, do not use. Replace with a new Agilent 3413
標(biāo)簽： agilent
上傳時(shí)間： 2022-02-20
上傳用戶：
本系統(tǒng)采用電動(dòng)機(jī)電樞供電回路串接采樣電阻的方式來實(shí)現(xiàn)對(duì)小型直流有刷電動(dòng)機(jī)的轉(zhuǎn)速測(cè)量。該系統(tǒng)主要由二階低通濾波電路,小信號(hào)放大電路、單片機(jī)測(cè)量顯示電路、開關(guān)穩(wěn)壓電源電路等組成。同時(shí)自制電機(jī)測(cè)速裝置,用高頻磁環(huán)作為載體,用線圈繞制磁環(huán),利用電磁感應(yīng)原理檢測(cè)電機(jī)運(yùn)行時(shí)的漏磁,將變化的磁場(chǎng)信號(hào)轉(zhuǎn)化為磁環(huán)上的感應(yīng)電流。用信號(hào)處理單元電路將微弱電信號(hào)轉(zhuǎn)化為脈沖信號(hào),送由單片機(jī)檢測(cè),從而達(dá)到準(zhǔn)確測(cè)量電機(jī)的速度的要求。In this system, the sampling resistance of armature power supply circuit is connected in series to measure the speed of small DC brush motor. The system is mainly composed of second-order low-pass filter circuit, small signal amplifier circuit, single-chip measurement and display circuit, switching regulated power supply circuit and so on. At the same time, the self-made motor speed measuring device uses high frequency magnetic ring as the carrier, coil winding magnetic ring, and electromagnetic induction principle to detect the leakage of magnetic field during the operation of the motor, which converts the changed magnetic field signal into the induced current on the magnetic ring. The weak electric signal is transformed into pulse signal by signal processing unit circuit, which is sent to single chip computer for detection, so as to meet the requirement of accurate measurement of motor speed.
標(biāo)簽： 直流電動(dòng)機(jī)
上傳時(shí)間： 2022-03-26
上傳用戶：
以STC12C5A60S2單片機(jī)為控制核心,采用2.4G(JF24D)無線遙控模塊進(jìn)行無線發(fā)射與接收,設(shè)計(jì)了一種雙電機(jī)遙控船模控制系統(tǒng).該系統(tǒng)通過切換檔桿實(shí)現(xiàn)前進(jìn)后退,方向盤左右轉(zhuǎn)動(dòng)、暫停按鈕等控制直流電機(jī)的正轉(zhuǎn)、反轉(zhuǎn)、暫停,使得電機(jī)驅(qū)動(dòng)的遙控船模實(shí)現(xiàn)前進(jìn)后退、左右轉(zhuǎn)向、暫停等功能,有效解決了驅(qū)動(dòng)功率小和船模之間相互干擾等問題,可廣泛應(yīng)用于遙控船模領(lǐng)域.Using STC12C5A60S2 single-chip microcomputer as the controller and 2.4 G(JF24D)wireless remote control module for wireless transmission and reception, a dual-motor remote control ship model control system is designed. The system realizes forward and backward by switching the gear lever. The steering wheel rotates left and right and the pause button controls the forward, reverse and pause of the dc motor. The remote controller of ship model driven by the motor realizes forward and backward, left and right steering, pause and other functions. The ship model control system can effectively solve the problems of small driving power and mutual interference between ship models, and can be widely used in the field of remote controller of ship model.
標(biāo)簽： 電機(jī) 遙控船模 控制系統(tǒng)
上傳時(shí)間： 2022-03-27
上傳用戶：
以AT89S52單片機(jī)為控制核心,采用電容降壓技術(shù),Buck電路拓?fù)?PWM驅(qū)動(dòng)模塊和功率器件散熱設(shè)計(jì),通過高速的數(shù)據(jù)采集、主功率輸入輸出模塊和控制模塊,設(shè)計(jì)一種新型智能車載充電器.在充電過程中,通過負(fù)脈沖瞬間放電實(shí)現(xiàn)對(duì)鉛酸蓄電池的再生修復(fù),提高電池的有效容量,延長(zhǎng)使用壽命.該充電器體積小、速度快、效率高、可靠性好.With AT89S52 single chip computer as the control core,a new type of intelligent car-carried charger was designed by using capacitance step-down technology,Buck circuit topology,PWM driving module and power device heat dissipation design,through high-speed data acquisition,main power input and output module and control module.In the charging process,the regeneration and repair of lead-acid batteries are realized by instantaneous discharge of negative pulse,which improves the effective capacity of batteries and prolongs their service life.The charger has the advantages of small size,fast speed,high efficiency and good reliability.
標(biāo)簽： 車載充電器
上傳時(shí)間： 2022-03-27
上傳用戶：
電學(xué)中的測(cè)量技術(shù)涉及范圍非常廣,電流測(cè)量在電學(xué)計(jì)量中占有非常重要的位置。如何精確地進(jìn)行電流測(cè)量是精密測(cè)量的一大難題。傳統(tǒng)的電流檢測(cè)電路多采用運(yùn)算放大芯片與片外電流檢測(cè)電路相結(jié)合的方式,電路集成度很低,需要較多的接口和資源才能完成對(duì)電路的檢測(cè)。本文把所有電路部分都集成在一塊芯片上,包括檢測(cè)電阻,運(yùn)算放大器電路及模擬轉(zhuǎn)數(shù)字轉(zhuǎn)換電路,從而在電路內(nèi)部可以進(jìn)行電流檢測(cè),使電路更好的集成化。前置電路使用二級(jí)共源共柵結(jié)構(gòu)的運(yùn)算放大器,減小溝道長(zhǎng)度調(diào)制效應(yīng)造成的電流誤差。10位SAR ADC中采用電容驅(qū)動(dòng)能力強(qiáng)的傳輸門保證了模數(shù)轉(zhuǎn)化器的有效精度。比較器模塊采用再生鎖存器與遲滯比較器作為基礎(chǔ)單元組合解決精密測(cè)量的問題。本設(shè)計(jì)可以作為嵌入芯片內(nèi)的一小部分而檢測(cè)芯片中的微小電流1mA~100mA,工作電壓在1.8v左右,電流檢測(cè)精度預(yù)期達(dá)到10uA的需求。The measurement technology in electricity involves a wide range,and current measurement plays a very important position in electrical measurement.How to accurately measure current is a big problem in precision measurement. The traditional current detecting circuit adopts the combination of the operational amplifier chip and theoff-chip current detecting circuit, The circuit integration is very low, and more interfaces and resources are needed tocomplete the circuit detection.This topic integrates all the circuit parts into one chip, including detection resistance, operational amplifier circuit andanalog to digital conversion circuit. Highly integrated circuit makes the external resources on the chip more intensive,so that current detection can be carried out inside the circuit, so that the circuit can be better integrated. Thefront-end circuit of this project uses two-stage cascade operational amplifier and cascade tube to reduce the currenterror caused by channel length modulation effect. In 10-bit SAR ADC, the transmission gate with strong capacitivedriving ability ensures the effective accuracy of the analog-to-digital converter. Comparator module uses regenerativelatch and hysteresis comparator as basic unit to solve the difficult problem of precision measurement. This topic can beused as a small part of the embedded chip to detect the micro-current in the chip 1 mA~100 mA, the working voltageis about 1.8v, and the current detection accuracy is expected to reach the requirement of 10 uA.
標(biāo)簽： 電流檢測(cè) 電路 運(yùn)算放大器 adc
上傳時(shí)間： 2022-04-03
上傳用戶：
為設(shè)計(jì)高效率、低損耗的PFC電路,本文基于UCC28019進(jìn)行電路設(shè)計(jì)。以UCC28019輸出的PWM波形來控制Boost升壓斬波為核心電路,使電路中的電容交替地充放電、電感交替的儲(chǔ)存和釋放能量,最后實(shí)現(xiàn)在輸入AC20V~24V電壓情況下穩(wěn)定輸出DC38V。測(cè)試結(jié)果表明,系統(tǒng)實(shí)現(xiàn)效率為95%左右,電壓調(diào)整率小于1%,電源功率因數(shù)0.99。交流輸入電壓為19.0-25.8 V時(shí),輸出直流電壓穩(wěn)定性較好,電感無明顯嘯叫且紋波小,具有一定的帶負(fù)載能力和實(shí)用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
標(biāo)簽： ucc28019 pfc 電路設(shè)計(jì)
上傳時(shí)間： 2022-04-03
上傳用戶：
本文跟蹤了國(guó)內(nèi)國(guó)際上各研究組織關(guān)于5G需求與關(guān)鍵技術(shù)最新研究進(jìn)展。高能效將是5G從設(shè)計(jì)之初就不得不考慮的幾個(gè)重要問題之。研究如何在不損失或者微損失網(wǎng)絡(luò)性能的前提下，極大地降低系統(tǒng)的能量消耗是一項(xiàng)很有研究?jī)r(jià)值的工作。本文通過分析現(xiàn)有無線網(wǎng)絡(luò)基站能量消耗的各個(gè)組成部分，參考目前5G研究趨勢(shì)，選擇網(wǎng)絡(luò)能效模型與基站能耗模型，用于后續(xù)網(wǎng)絡(luò)能效評(píng)估。小站密集化部署技術(shù)（Small Cell）是目前業(yè)內(nèi)普遍認(rèn)同的實(shí)現(xiàn)未來5G系統(tǒng)各項(xiàng)性能指標(biāo)與效率指標(biāo)的有效策略之一。隨著小站的密集化部署，網(wǎng)絡(luò)整體能效成為衡量異構(gòu)無線通信系統(tǒng)長(zhǎng)期經(jīng)濟(jì)效益的一項(xiàng)重要指標(biāo)。網(wǎng)絡(luò)運(yùn)營(yíng)前，需要以高能效為目標(biāo)進(jìn)行Small Cell密集化網(wǎng)絡(luò)部署。本文利用上述的能效模型，建立并推導(dǎo)出了Small Cell最佳部客位置與數(shù)量的高能效網(wǎng)絡(luò)部署方案目標(biāo)函數(shù)，進(jìn)一步通過數(shù)值仿真方法獲得了具體網(wǎng)絡(luò)場(chǎng)景下的高能效Small Cell 絡(luò)部署位置與數(shù)量，最后通過對(duì)大量的仿真結(jié)果進(jìn)行分析，得出了高能效Small Cell集化署方案的一般性規(guī)律。研究成果對(duì)未來5G系統(tǒng)中SmallCell的部署具有重要參考意義在網(wǎng)絡(luò)運(yùn)營(yíng)中，由于網(wǎng)絡(luò)負(fù)載存在天然的不均衡性與動(dòng)態(tài)被動(dòng)性，需要在Small Cell密集化部署的未來移動(dòng)通信系統(tǒng)中進(jìn)行高能效網(wǎng)絡(luò)拓?fù)淇刂疲员阍诰W(wǎng)絡(luò)運(yùn)營(yíng)中維持實(shí)時(shí)的網(wǎng)絡(luò)能效最優(yōu)化的網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)。本論文分析了目前業(yè)界關(guān)于Small Cell 休眠/喚醒性能增益的最新研究成果，并針對(duì)其現(xiàn)有休眠喚醒方案中以單小區(qū)固定負(fù)載為門限的休眠順醒機(jī)制的不足，提出了一種高能效Small Cell聯(lián)合休眼喚醒控制機(jī)制，實(shí)現(xiàn)了對(duì)網(wǎng)絡(luò)拓?fù)涞母吣苄?dòng)態(tài)控制。Small Cell密集化部署使網(wǎng)絡(luò)編碼在未來無線網(wǎng)絡(luò)環(huán)境中得到了新的應(yīng)用契機(jī)，本文最后結(jié)合幾種未來5G新場(chǎng)景對(duì)網(wǎng)絡(luò)編碼應(yīng)用方案進(jìn)行了初步探討。初步仿真結(jié)果表明，網(wǎng)絡(luò)編碼方案可有效提升能效。
標(biāo)簽： 5g 移動(dòng)網(wǎng)絡(luò)
上傳時(shí)間： 2022-06-20
上傳用戶：canderile
工業(yè)生產(chǎn)和科學(xué)研究過程中，流量測(cè)量必不可少，由于超聲波流量計(jì)可以將超聲換能器火裝在管道外面進(jìn)行非接觸測(cè)量，無需中斷管道，設(shè)計(jì)和安裝方便，并且滿足大部分工業(yè)生產(chǎn)的精度要求，近年來得到了廣泛應(yīng)用.本設(shè)計(jì)采用了多脈沖時(shí)差法測(cè)量技術(shù)，增強(qiáng)了系統(tǒng)的抗干擾性，改善了測(cè)量效果。系統(tǒng)的硬件部分以MSP430F155為控制核心，選用了高精度時(shí)間數(shù)字轉(zhuǎn)換器TDC-GPI和復(fù)雜可編程邏輯器件spl.S11032等芯片.充分發(fā)揮了ispL.S1032的在系統(tǒng)可編程性，設(shè)計(jì)了超聲波退耦合脈沖定時(shí)器、抗干擾濾波器、數(shù)字單穩(wěn)態(tài)觸發(fā)器等電路，實(shí)現(xiàn)了多脈沖的時(shí)間差測(cè)量，進(jìn)一步提高了硬件抗干擾性，并且完成了系統(tǒng)時(shí)鐘同步和電平轉(zhuǎn)換的任務(wù)。通過芯片內(nèi)部的門電路傳播時(shí)延實(shí)現(xiàn)系統(tǒng)傳播時(shí)間的測(cè)量，可以達(dá)到較高的測(cè)量精度，與傳統(tǒng)的通過高速數(shù)字計(jì)數(shù)器測(cè)時(shí)的方式相比，有很大的優(yōu)勢(shì)，可以在較低的頻率下完成電路的設(shè)計(jì)，避免了高頻電路設(shè)計(jì)中所帶來的更繁雜的電磁兼容等方面的問題。軟件設(shè)計(jì)是基于嵌入式實(shí)時(shí)操作系統(tǒng)Small RTOS 430的實(shí)現(xiàn).Small RTOS 430是由IC/OS-I和Small RTOS 51經(jīng)過改寫和移植而來，最大限度的減少了操作系統(tǒng)本身的代碼量和所需的內(nèi)存空間，整個(gè)軟件系統(tǒng)以任務(wù)為單位，任務(wù)的實(shí)現(xiàn)相互獨(dú)立，簡(jiǎn)化了軟件的開發(fā)過程，縮短了開發(fā)周期，增強(qiáng)了系統(tǒng)的可靠性本文設(shè)計(jì)的時(shí)差法超聲波流量計(jì)，采用了TDC-GPI測(cè)量傳播時(shí)間差，保證了較高的測(cè)量精度；使用ispLS1032完成了多脈沖情況下時(shí)間差的確定和超聲波退耦合脈沖定時(shí)器、抗干擾濾波器等硬件抗干擾電路，改善了超聲波流量計(jì)的測(cè)量效果.
標(biāo)簽： 超聲波流量計(jì)
上傳時(shí)間： 2022-06-21
上傳用戶：得之我幸78
MotioninterfaceTM is becoming a "must-have"function being adopted by smartphone and tablet manufacturers due to the enormous value it adds to the end user experience. In smartphones, it finds use in applications such as gesture commands for applications and phone control, enhanced gaming, augmented reality, panoramic photo capture and viewing, and pedestrian and vehicle navigation. With its ability to precisely and accurately track user motions, MotionTracking technology can convert handsets and tablets into powerful 3D intelligent devices that can be used in applications ranging from health and fitness monitoring to location-based services. Key requirements for Motionlnterface enabled devices are small package size, low power consumption, high accuracy and repeatability, high shock tolerance, and application specific performance programmability-all at a low consumer price point.
標(biāo)簽： mpu6050
上傳時(shí)間： 2022-07-06
上傳用戶：zhaiyawei
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