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switch

switch是交換機,它的前身是網(wǎng)橋。交換機是使用硬件來完成以往網(wǎng)橋使用軟件來完成過濾、學習和轉(zhuǎn)發(fā)過程的任務。switch速度比HUB快,這是由于HUB不知道目標地址在何處,發(fā)送數(shù)據(jù)到所有的端口。而switch中有一張轉(zhuǎn)發(fā)表,如果知道目標地址在何處,就把數(shù)據(jù)發(fā)送到指定地點,如果它不知道就發(fā)送到所有的端口。這樣過濾可以幫助降低整個網(wǎng)絡的數(shù)據(jù)傳輸量,提高效率。但然交換機的功能還不止如此,它可以把網(wǎng)絡拆解成網(wǎng)絡分支、分割網(wǎng)絡數(shù)據(jù)流,隔離分支中發(fā)生的故障,這樣就可以減少每個網(wǎng)絡分支的數(shù)據(jù)信息流量而使每個網(wǎng)絡更有效,提高整個網(wǎng)絡效率。目前有使用switch代替HUB的趨勢。
  • AT89S52-24單片機最小系統(tǒng)開發(fā)板ALTIUM設計硬件原理圖+PCB文件 2層板設計 大小為1

    AT89S52-24單片機最小系統(tǒng)開發(fā)板ALTIUM設計硬件原理圖+PCB文件,2層板設計,大小為121x149mm,Altium Designer 設計的工程文件,包括完整的原理圖及PCB文件,可以用Altium(AD)軟件打開或修改,可作為你的產(chǎn)品設計的參考。主要器件型號列表如下:Library Component Count : 14Name                Description----------------------------------------------------------------------------------------------------AT89S52-P           8 位微處理器/40引腳CAP                 CapacitorCAPACITOR POL       CapacitorCRYSTAL             CrystalD Connector 9       Receptacle Assembly, 9 Position, Right AngleHeader 2            Header, 2-PinHeader 4            Header, 4-PinHeader 5X2          Header, 5-Pin, Dual rowLED                 MAX232PZ_9                排針——9RES2SW-DPST             Double-Pole, Single-Throw switchSW-PB               switch

    標簽: at89s52 單片機

    上傳時間: 2021-11-17

    上傳用戶:

  • AT89S52單片機主8入8出繼電器工控主板ALTIUM設計硬件原理圖+PCB文件

    AT89S52單片機主8入8出繼電器工控主板ALTIUM設計硬件原理圖+PCB文件,2層板設計,大小為121x149mm,Altium Designer 設計的工程文件,包括完整的原理圖及PCB文件,可以用Altium(AD)軟件打開或修改,可作為你的產(chǎn)品設計的參考。主要器件型號列表如下:Library Component Count : 25Name                Description----------------------------------------------------------------------------------------------------24LC02AJKG                按鍵開關(guān)AT89S52-P           8 位微處理器/40引腳CAP                 CapacitorCAPACITOR POL       CapacitorCPDR                瓷片電容CRYSTAL             CrystalD Connector 9       Receptacle Assembly, 9 Position, Right AngleDG                  電感DJDR                電解電容GO                  光耦Header 5X2          Header, 5-Pin, Dual rowJDQYCK              繼電器——1常開1常閉LED                 發(fā)光二極管LM2576HVT-3.3       Simple switcher 3A Step Down Voltage RegulatorMAX232              NPN                 NPN Bipolar TransistorPZ_2                排針——2PZ_3                排針——3RES2Res                 電阻Res PZ_8            8位排阻SW-DPST             Double-Pole, Single-Throw switchWY2JG               穩(wěn)壓二級管ZL2JG               整流二極管

    標簽: at89s52 繼電器

    上傳時間: 2021-11-17

    上傳用戶:kingwide

  • CH340C+RT9013+MINI USB接口板 AD設計硬件原理圖+PCB文件 ALTIUM設計

    CH340C+RT9013+MINI USB接口板 AD設計硬件原理圖+PCB文件,ALTIUM設計的2層板設計,包括完整的原理圖和PCB文件,主要器件如下:Library Component Count : 12Name                Description----------------------------------------------------------------------------------------------------CAP                 CapacitorCC2640EM            CC2630 ModuleCH340               CH340 USB 2 UARTCON11               Connector 11pinsCON12               Connector 12pinsCON3X2              Connector 5*2LED                 LEDRES                 ResistorRT9013              RT9013 3.3Vswitch              switch 6*6USB1                USB ConnectorsXDS110-Lte          XDS110-Lite Target Interface

    標簽: ch340c rt9013 usb 接口 ad設計

    上傳時間: 2021-11-24

    上傳用戶:canderile

  • USB_MICRO USB_MNI USB扁口座 TF卡槽 SOIC8 LQFP32芯片ALTIU

    USB_MICRO USB_MNI  USB扁口座 TF卡槽 SOIC8 LQFP32芯片ALTIUM 庫(3D PCB封裝庫), 3D封裝,已在項目中使用,可以做為你的設計參考。詳細列表如下:Component Count : 94Component Name-----------------------------------------------32165032-8MHZAMS1117ANT2AntennaBATbuzzerCapCAP-0805CAP-3216CD32Crystal Oscillator 3225HC-06KEY-2PINLED-0603LQFP-100LQFP32LQFP44LQFP44 10X10_LLQFP44 10X10_MLQFP44 10X10_NLQFP48LQFP48 7X7_LLQFP48 7X7_MLQFP48 7X7_NLQFP64 10x10_LLQFP64 10x10_MLQFP64 10x10_NMagMOTONRF24L01NRF24L01-modeOLED-0.96-PIN7QFN20_4X4QFN24_4X4QFN32_5X5remoteRES-0603RFX2401CRPSG90SH1.0mm-4PINSH1.0MM-5PINSH1.0mm-6PINSMA-ANTSMA/DO-214SOIC-8SOP16SOT-23-3SOT-23-5SOT-89SOT-223SPL06-001STM32F030C8T6STM32F030F4P6STM32F103C8T6straight-1x2pinstraight-1x2pin - duplicatestraight-1x2pin - duplicate1straight-1x3pinstraight-1x3pin - duplicatestraight-1x3pin - duplicate1straight-1x4pinstraight-1x4pin - duplicatestraight-1x5pinstraight-1x8pinstraight-1x8pin - duplicatestraight-2x2pinstraight-2x3pinstraight-2x4pinstraight-2x5pinSW-NO/OFF-PIN3SW-SMD1SW-SMD2switch-DIP-6*6*7SX1308TF-CARDTO-263-5TP4056USBUSB_MICROUSB_MNI_BUSB-MICRO-1winding_1x2pinwinding_1x3pinwinding_1x4pinwinding_1x5pinwinding_1x8pinwinding_2x2pinwinding_2x3pinwinding_2x4pinwinding_2x5pinXTAL-5070/SMDXTAL-QC49/SMD

    標簽: usb

    上傳時間: 2021-12-02

    上傳用戶:aben

  • TMS320F28035 DSP最小核心板開發(fā)板ALTIUM設計原理圖 無PCB板圖

    TMS320F28035 DSP最小核心板開發(fā)板ALTIUM設計原理圖,無PCB板圖。原理圖已在項目中使用,包括CAN通信電路和瓷隔離電路等,可以做為你的設計參考,所用器件型號如下:ADUM1201AT24CXXBAV99               R26010005CAP                 CapacitorHeader 4            Header, 4-PinHeader 4X2          Header, 4-Pin, Dual rowINDUCTORL2                  LM317               R25040043NTC                 R27040030OPTOISORES                 R20190049RES1                SN65HVD230/SO8SW-SPST             Single-Pole, Single-Throw switchTL431TMS320F28035-80XTAL                Crystal Oscillator

    標簽: tms320f28035 dsp

    上傳時間: 2021-12-22

    上傳用戶:trh505

  • PW2606B.pdf規(guī)格書下載

    The PW2606B is a front-end over voltage and over current protection device. It achieves wide inputvoltage range from 2.5VDC to 40VDC. The over voltage threshold can be programmed externally orset to internal default setting. The low resistance of integrated power path nFET switch ensures betterperformance for battery charging system applications. It can deliver up to 1A current to satisfy thebattery supply system. It integrates the over-temperature protection shutdown and auto-recoverycircuit with hysteresis to protect against over current events

    標簽: pw2606b

    上傳時間: 2022-02-11

    上傳用戶:

  • PW2601_2.0.pdf規(guī)格書下載

    The PW2601 is a charger front-end integrated circuit designed to provide protection to Li-ionbatteries from failures of charging circuitry. The device monitors the input voltage, battery voltageand the charging current to make sure all three parameters are operated in normal range. Thedevice will switch off internal MOSFET to disconnect IN to OUT to protect load when any of inputvoltage, output current exceeds the threshold. The Over temperature protection (OTP) functionmonitors chip temperature to protect the device. The PW2601 also can protect the system’sbattery from being over charged by monitors the battery voltage continuously. The deviceoperates like a linear regulator, maintaining a 5.1V output with input voltages up to the input overvoltage threshold.The PW2601 is available in DFN-2x2-8L package. Standard products are Pb-free and Halogenfree

    標簽: pw2601

    上傳時間: 2022-02-11

    上傳用戶:

  • PW2330-2.0.pdf規(guī)格書下載

    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

    標簽: pw2330

    上傳時間: 2022-02-11

    上傳用戶:

  • PW2312_2.0.pdf規(guī)格書下載

    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.

    標簽: pw2312

    上傳時間: 2022-02-11

    上傳用戶:qingfengchizhu

  • PW2205-2.0.pdf規(guī)格書下載

    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

    標簽: pw2205

    上傳時間: 2022-02-11

    上傳用戶:

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