DSPU131_大德汇成科技（厦门）有限公司

DSPU131

CISCO SPA-4XOC48POS/RPR 4-PORT OC48/STM16 POS RPR SHARED PORT ADAPTERS Fast Ship

CISCO SPA-4XOC3-POS 4-PORT OC3/STM1 POS SHARED PORT ADAPTERS

CISCO SPA-4XOC3-ATM 4-PORT OC-3C/STM-1 ATM SHARED PORT ADAPTER

CISCO SPA-4XCT3/DS0 4-PORT CHANNELIZED T3 TO DS0 SHARED PORT ADAPTER Fast Shippi

CISCO SPA-4X1FE-TX-V2 CISCO 4-PORT FAST ETHERNET TX SHARED PORT ADAPTER

Cisco SPA-2XOC48POS/RPR 2-PORT OC48/STM16 POS/RPR SHRD.

Cisco SPA-24XDS-SFP 24-PORT UBR10012 WIDEBAND DOWNSTREAM SHARED

CISCO SPA-1X10GE-WL-V2 Line Card

Cisco SPA-10X1GE-V2 10-Port Gigabit Ethernet Shared Port Adapter 10x SFP NIB

Cisco SN5420 CISCO Network Router 1YR - ASK 4 QTY

Cisco SM-ISM Module

CISCO SLM248PT SF200-48P SLM248PT-NA 48PORT 10/100 POE SMART SW W/ GB UPLI

CISCO SLM248GT SF200-48 SLM248GT-NA 48PORT 10/100 SMART SW W/ GIGABIT UPLINK

CISCO SLM224PT SF200-24P SLM224PT-NA 24PORT 10/100 POE SMART SW W/ GB UPLINK

CISCO SLM224GT SF200-24 SLM224GT-NA 24PORT 10/100 SMART SW W/ GIGABIT UPLINK

CISCO SLM2016T SG200-18 SLM2016T-NA 18PORT GIGABIT SMART SWITCH

CISCO SLM2008PT 8PORT SG 200-08P SLM2008PT-NA GIGABIT POE SMART SWITCH

Cisco Short wavelength 1000BASE-SX GBIC WS-G5484=

CISCO SHORT WAVELENGTH 1000BASE-SX GBIC WS-G5484=

CISCO SGE2010P 10/100/1000 Switch

Cisco SFS-7008-4X048-SK9 Topspin 270 48 Ports 10Gbps Dual Power Supplies

Cisco SFS-7008-4X048-SK9 Topspin 270 48 Ports 10Gbps

CISCO SFP-OC12-MM OC-12/ STM-4 SFP MULTI-MODE FIBER

CISCO SFP-OC12-IR1 OC-12/ STM-4 SFP INTERMEDIATE REACH 15KM

CISCO SFP-H10GB-CU5M CABLE 10GBASE SFP 5M

CISCO SFP-GE-T 1000BASE-T SFP NEBS 3 ESD Fast Shippi

CISCO SFP-10G-SR 10GBASE-SR SFP MODULE

CISCO SFP-10G-LR 10GBASE-LR SFP MODULE 1YR - ASK 4 QTY

Cisco SF 100D-08 8-Port Fast Ethernet Switch SF 8PORT 10/100 100D-08 WITH

Cisco Sce2020-4xgbe-sm Service Control Engine w/ AC POWER

Cisco SA-VAM2 VPN Acceleration Module

Cisco SA-VAM2 VPN Acceleration Module Fast Shiping 1YR - ASK 4 QTY

CISCO SA-VAM2 SAVAM2 7206VXR 7204VXR 7301

Cisco SA-VAM

Cisco RSP720-3CXL-GE Route Processor Switch Module 1 YEAR

Cisco RSP4 PLUS Route Processor 4

Cisco ROUTER CISCO2821-AC-IP

CISCO Router CISCO1801

CISCO ROUTER 7206VXR 7206 VXR NPE-400 512MB DUAL AC I/O-2FE 6 X PA-FE-TX 8 FE

CISCO ROUTER 7204VXR NPE-400 512MB MEM DUAL AC 7204 I/O-2FE 4 X PA-FE-TX 6 FE

CISCO ROUTER 7204VXR NPE-300 256MB MEM DUAL AC 7204 I/O-2FE 4 X PA-FE-TX 6 FE

CISCO REFURB GLC-SX-MM GE SFP LC TRANSCEIVER

Cisco PWR-2811-AC-IP 2811 AC/IP POE POWER SUPPLY

Cisco PVDM-4 DSP VOIP Module-Warranty-FastShip

Cisco PVDM2-8 8-CHANNEL PACKET VOICE/FAX DSP MODULE

Cisco PVDM-256K-4 Module 4-Ch Voice/Fax DSP Fast Ship

Cisco PVDM-256K-20 20 Channel DSP Module 1751/1760 Fast

CISCO PVDM2-48 48-channel Packet Fax/Voice DSP Module

Cisco PIX-VPN-ACCEL VPN Accelerator Card PIX515E 525

CISCO PIX-VAC Accelerator Card for PIX515E 525 535

Cisco PIX-515E-UR-FE-BUN 256MBVACUnrestricted6xFE

Cisco PIX-515E-R-BUN Firewall-WARRANTY

Cisco PA-VXC-2TE1 Port Adapter Fast Ship-WRNTY

Cisco PA-T3 1 PORT T3 SERIAL PORT ADAPTER ENHANCED

CISCO PA-POS-2OC3 2 Port Packet/SONET OC3c/STM1

Cisco PA-POS-1OC3 POS OC-3C STM-1 Expansion Module 1YR - ASK 4 QTY

CISCO PA-MCX-8TE1-M Port Adapter Fast Shiping

CISCO PA-MC-STM-1SMI 1PORT MULTI C STM-1 SINGLE M.

CISCO PA-MC-E3 Port Adapter Fast Shiping

Cisco PA-MC-8T1 8 Port Multi Channel T1 Module

Cisco PA-MC-8E1/120 Multichannel E1 Port Adapter Fast Ship

Cisco PA-MC-4T1 4-Port Multichannel -WRNTY-Fast Ship

Cisco PA-MC-2T1 2 PORT MULTICHANNEL T1 PORT ADAPTER WITH INTEGRATED CSU/DSUS

Cisco PA-GE 1-Port Gigabit Ethernet Port Adapter 1 YEAR

CISCO PA-GE 1 PORT GIGABIT ETHERNET ADAPTER- PAGE

Cisco PA-FCIP-1GB Fibre Channel Port Adapter Fast Ship

CISCO PA-A6-OC3SMI 1 Port Enh ATM OC3c/STM1 Card Fast Ship 1YR - ASK 4

CUTLER HAMMER D840MPM NSFP D840MPM

CUTLER HAMMER D80NE2C NSPP D80NE2C

CUTLER HAMMER D80NE2C NSFP D80NE2C

CUTLER HAMMER D80NE2A PNEUMATIC TIMER 110-120V 50/60HZ NIB

CUTLER HAMMER D80NE2A NSPP D80NE2A

CUTLER HAMMER D80NE1A USPP D80NE1A

CUTLER HAMMER D80NE1A NSFP D80NE1A

CUTLER HAMMER D80ND2A NSPP D80ND2A

CUTLER HAMMER D80ND1C USPP D80ND1C

CUTLER HAMMER D80ND1A USPP D80ND1A

CUTLER HAMMER D80ND1A NSFP D80ND1A

Cutler Hammer D80N A2 Pneumatic Timer

CUTLER HAMMER D80JE22A USPP D80JE22A

CUTLER HAMMER D80JE20A NSFP D80JE20A

CUTLER HAMMER D80JE10A NSFP D80JE10A

CUTLER HAMMER D80J-AS2 NSPP D80JAS2

CUTLER HAMMER D80JA11 USPP D80JA11

CUTLER HAMMER D80-AS1 NSFP D80AS1

CUTLER HAMMER D80AMT NSFP D80AMT

CUTLER HAMMER D80AMC NSFP D80AMC

CUTLER HAMMER D80AMB NSFP D80AMB

CUTLER HAMMER D80AMA USPP D80AMA

CUTLER HAMMER D80AMA NSPP D80AMA

CUTLER HAMMER D80AMA NSFP D80AMA

CUTLER HAMMER D800VCP1218 USPP D800VCP1218

CUTLER HAMMER D7XTN14XXXX4XPC USPP D7XTN14XXXX4XPC

CUTLER HAMMER D7XTN14XXXX4DXX NSFP D7XTN14XXXX4DXX

CUTLER HAMMER D7DBA15STA1XXX USPP D7DBA15STA1XXX

CUTLER HAMMER D7DBA12STA1XXX USPP D7DBA12STA1XXX

CUTLER HAMMER D7DBA10AGA1XXX USPP D7DBA10AGA1XXX

CUTLER HAMMER D7D SERIES TOUCH PANEL D7DBA12AGA1XXX

CUTLER HAMMER D77BDSNAPX1 USPP D77BDSNAPX1

CUTLER HAMMER D77BDSNAPX1 NSFP D77BDSNAPX1

CUTLER HAMMER D77A-RQ8 NSFP D77ARQ8

CUTLER HAMMER D77A-DI8-DQ8 NSFP D77ADI8DQ8

CUTLER HAMMER D77A-DI8 NSFP D77ADI8

CUTLER HAMMER D735SVPP32SDW95 USPP D735SVPP32SDW95

CUTLER HAMMER D72WTSP7Z863WNT USPP D72WTSP7Z863WNT

CUTLER HAMMER D72WTSP7Z84DWNT USPP D72WTSP7Z84DWNT

Cutler Hammer D72WTSP364HDNPC D720 Industrial Computer

CUTLER HAMMER D72WNOP76433WNT USPP D72WNOP76433WNT

CUTLER HAMMER D72N8XXAXXXX USPP D72N8XXAXXXX

CUTLER HAMMER D725SVP232SDWNT USPP D725SVP232SDWNT

Cutler Hammer D720 Industrial PC D72WTSP7Z86DWNT

CUTLER HAMMER D720 DS90021SPAREIR

CUTLER HAMMER D710TFT14TS USPP D710TFT14TS

CUTLER HAMMER D710TFT14TS NSFP D710TFT14TS

CUTLER HAMMER D710TFT10TS USPP D710TFT10TS

CUTLER HAMMER D64RPB1 USPP D64RPB1

Cutler Hammer D64RP18 ground fault relay with built in 110"CT 30MA-6A 24-240V

CUTLER HAMMER D641 USPP D641

CUTLER HAMMER D60PND PHASE MONITORING RELAY 600V

CUTLER HAMMER D60PNC NSFP D60PNC

单极型管的单极放大电路，用场效应管作为放大器件组成的放大电路，称为场效应管放大电路。场效应管和双极型晶体管一样是电路的核心器件，在电路中起以小控大的作用。在场效应管的放大电路中，为实现电路对信号的放大作用，要建立偏置电路以提供合适的偏置电压，使场效应管工作在特性的恒流区。

自给偏压电路

N沟道耗尽型MOS管组成的共源极放大电路

自给偏压电路

场效应管的栅极通过电阻Rg接地，源极通过电阻Rs接地。这种偏置方法靠漏极电流Id在源极电阻Rs上产生的电压为栅源极提供一个偏置电压Ugs，故称为自偏压电路。

场效应管

场效应管也是非线性器件，在输入信号电压很小的条件下，也可将其用小信号模型等效。与建立双极型三极管小信号模型相似，将场效应管也看成一个两端口网络，以结型场效应管为例，栅极与源极之间为输入端口，漏极与源极之间为输出端口。无论是哪种类型的场效应管，均可以认为栅极电流为零，输入端口视为开路，栅源极间只有电压存在。

共源极

共源极场效应管放大电路与双极型管共射放大电路相比较，

共源极放大电路

共源极放大电路具有以下特点：输入电阻，相当于开路；输出电阻由于并联一个电阻Rds，因此输出电阻较小。共源极场效应管放大电路的微变等效电路相当于一个电压控制的电流源。

放大电路

共漏极放大电路又称为源极输出器或源极跟随器，同样具有与共集电极放大电路相同的特性：输入电阻高、输出电阻低和电压放大倍数小于1并接近于1。

CUTLER HAMMER D60PNB NSPP D60PNB