440G-TZS21UPRH

440G-TZS21UPRH 

440G-TZS21UPRH 

440G-TZS21UPRH 

Cisco PA-A6-OC3MM 1 Port Enh ATM OC3c/STM1 Multimode 1YR - ASK 4 QTY

Cisco PA-A6-OC3MM 1 Port Enh ATM OC3c/STM1 Multimode 1YR - ASK 4 QTY

Cisco PA-2T3 Serial Adapter Card for 7204 7206VXR

Cisco PA-2CE1/PRI-75 Channelized Adapter WRNTY

CISCO ONS-XC-10G-C XFP -10G MULTIRATE FULL C BAND TUNEABLE DWDM XFP 50 GHZ LC

CISCO ONS-XC-10G-C XFP -10G MULTIRATE FULL C BAND TUNEABLE DWDM XFP 50 GHZ LC

Cisco NPE-G2 ENGINE w/2GB-512F for VXR In stock 

CISCO NPE-G2 ENGINE FOR 7200 VXR SERIES NPEG2

Cisco NPE-G1 Network Processing Engine 512MB/128F for 7206VXR 7204VXR

Cisco NPE-G1 Network Processing Engine 1 YEAR 

CISCO NPE-300 Network Processing Engine Fast Shiping

CISCO NPE-175 NETWORK ENGINE 

Cisco NM-NAM Network Analysis Module Genuine Fast Ship

CISCO NM-HDV2-1T1/E1 Digital Voice/Fax Network Module

Cisco NME-XD-48ES-2S-P 48 10/100T POE 2SFP

Cisco NME-XD-48ES-2S-P 48 10/100T POE 2SFP

CISCO NME-CUE Enhanced Network VOIP Module FastShip

CISCO NME-CUE Enhanced Network VOIP Module FastShip

CISCO NME-APPRE-502-K9 Network Module 1YR - ASK 4 QTY

CISCO NME-APPRE-502-K9 Network Module 1YR - ASK 4 QTY

Cisco NMD-36-ESW-PWR EtherSwitch Module Fast Ship

Cisco NMD-36-ESW-2GIG Ethernet Module Fast Shiping

Cisco NM-CUE-EC Unity Express Module  1YR - ASK 4 QTY

Cisco NM-CUE-EC Unity Express Module  1YR - ASK 4 QTY

CISCO NM-CIDS-K9 Intrusion Detection Network Module 

CISCO NM-4E Ethernet Module Fast Shiping

Cisco NM-2W Module for 2600 3600 3700 FastShip-WRNTY

Cisco NM-2V Module Fast Ship 

CISCO NM-1T3/E3 1 PORT T3/E3 NM1T3E3 Network Module

Cisco NM-1GE 1 PORT GE NETWORK MODULE 

Cisco NM-1A-T3 ATM Network Module w/

Cisco Nexus N7K-M148GT-11 48-Ports Switch 7000 48 Port 10/100/1000 RJ-45

CISCO NEXUS N7K-M148GT-11 JLB

Cisco Nexus N7K-M108X2-12L 8-port 10 Gigabit Ethernet Module with XL Option 

Cisco Nexus N7K-C7010-BUN bundle w/N7K-C7010 1 N7K-SUP1 and more

Cisco Nexus N5K-C5548UP-FA Switch 5548 UP Chassis 32 10GbE Ports 2 PS2 Fans 

Cisco Network Module Enhanced NME-APPRE-522-K9

CISCO N7K-M148GS-11 7000 

Cisco N7K-M132XP-12L

CISCO N7K-C7018-FAB-1 

Cisco N5K-C5020P-BFS Nexus 5020 Switch W/ 5 Fans 2x N5K-PAC-1200W Power

Cisco N5K-C5020P-BF Nexus 5000 2RU 5 Fans 2x N5K-PAC-1200W Power

Cisco N5000 8-Ports Fiber Channel Expansion Module N5K-M1008=

Cisco N2K-C2248TP-1GE Switch Very Good Condition 

Cisco N2K-C2232PP-10GE Nexus 2ps 1 Fan Module 32x10ge8x10ge Req Sfp

CISCO MODULES WIC-1SHDSL-V2 Interface Card Fast Shiping

CISCO MODULES HWIC-1ADSL INTERFACE CARD Fast Shiping

CISCO MODULES EVM-HD-8FXS/DID High Density Voice/Fax Mo

CISCO MODULES EM-HDA-6FXO Fast Shiping

CISCO MODULES AIM-APPRE-102-K9 

CISCO MODULES AIM-APPRE-102-K9 

Cisco MEM2821-256D 256MB DRAM FOR CISCO2821 2821

CISCO ME-C3750-24TE-M CATALYST ME-C3750-24TE-M SWICTH 1 YEAR  -GRADE A

CISCO ME-C3750-24TE-M CATALYST ME-C3750-24TE-M SWICTH 1 YEAR  -GRADE A

Cisco ME-4924-10GE External Switch Managed 1 Year 

Cisco ME-4924-10GE 24-port External Switch 

Cisco ME-4924-10GE 24-port External Switch 

CISCO ME-3400G-12CS-A Access Switch 

CISCO ME-3400EG-2CS-A Switch 

CISCO ME-3400EG-2CS-A Switch 

Cisco ME-3400-24TS-A Metro Switch w/AC PWR- 1YR - ASK 4 QTY

Cisco ME-3400-24TS-A Metro Switch w/AC PWR- 1YR - ASK 4 QTY

CISCO ME-2400-24TS-A Switch 

CISCO LOT WS-X6716-10G-3CXL GRADE A

CISCO LOT WS-X6716-10G-3CXL GRADE A

CISCO LINE CARDS WS-X6548-RJ-21 

CISCO LINE CARDS WS-X6548-RJ-21 

CISCO LINE CARDS WS-X6548-RJ-21 

CISCO LINE CARD EXPANSION MODULE GIGABIT ETHERNET 1000BASE-X  24 WSX4624SFPE

CISCO L-ASA5510-SEC-PL ASA 5510 SECURITY PLUS LICENSE HA VLAN

CISCO L-ASA5510-SEC-PL ASA 5510 SECURITY PLUS LICENSE HA VLAN

CISCO ISR G2 W/SPE/200 4GE 3EHWIC 34SDP WITH SECURITY BUNDLE CISCO3925ESECK9

CISCO ISR G2 2921 ROUTER W/3GE 4 EHWIC PORT CISCO2921K9 CISCO2921/K9

Cisco ISM-SRE-300-K9 SRE 300 Internal Services Module 1941 2901 2921 3945 Router

Cisco IronPort C100 Email Security Appliance Attack Virus And Spam Protection

CISCO IPS IPS-4260-K9 

CISCO IPS IPS-4260-K9 

CISCO IP PHONE CP-7940 

Cisco IP Phone CP-791X-STAND 

Cisco IP Communications High-Density Digital Voice/Fax Module NM-HDV2=

Cisco IO-CONTROLR-BLANK 

CISCO INTEGRATED SERVICE ROUTER 512MB 1U RACK MOUNTABLE CISCO2901-SEC/K9

Cisco IDS-4215-K9 Intrusion Detection System

Cisco IAD2421-8FXS Router IAD 2421 Analog 

CISCO IAD2421-1T1 IAD 2421 

CISCO IAD2421-16FXS IAD 2421 

CISCO IAD2400 IAD2435-8FXS Router 

Cisco HWIC-D-9ESW-POE EtherSwitch Module-WARRANTY

Cisco HWIC-D-9ESW-POE EtherSwitch Module-WARRANTY

Cisco HWIC-D-9ESW Etherswitch 9 Port Interface Card

Cisco HWIC-AP-G-A AP HWIC W 2.4 GHZ RADIO FOR 802.11 B/G AMERICAS

Cisco HWIC-8A 8-PORT ASYNC HWIC MODULE 

Cisco HWIC-8A 8-PORT ASYNC HWIC MODULE 

CISCO HWIC-4ESW-POE 4-Port EtherSwitch Interface Card

CISCO HWIC-4ESW-POE 4-Port EtherSwitch Interface Card

Cisco HWIC-4ESW 4 PORT 10/100 MODULE 

Cisco HWIC-4A/S HighSpeed WAN Card 1YR - ASK 4 QTY

Cisco HWIC-4A/S HighSpeed WAN Card 1YR - ASK 4 QTY

Cisco HWIC-3G-GSM 3GWWAN HWIC-HSDPA/UMTS/EDGE/GPRS-

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 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

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

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