N7K-M148GS-11
N7K-M148GS-11
N7K-M148GS-11
SuperMicro H8SSL-R10
SuperMicro H8SSL-I2
SuperMicro H8SSL-I
SuperMicro H8SMU
SuperMicro H8SMI-2
SuperMicro H8SMA-2
SuperMicro H8SGL-F
SuperMicro H8SCM-F
SuperMicro H8SCM
SuperMicro H8QMI-2
SuperMicro H8QME-2
SuperMicro H8QME-2
SuperMicro H8QM8-2
SuperMicro H8QM3-2
SuperMicro H8QII-F
SuperMicro H8QII-F
SuperMicro H8QI6-F
SuperMicro H8DSR-I
SuperMicro H8DSR-8 Motherboard
SuperMicro H8DMU Motherboard
SuperMicro H8DMT
SuperMicro H8DMR-I2 MB CHECK W/ US FOR AVAILABILITY 1ST
SuperMicro H8DMR-82
SuperMicro H8DMI-2
SuperMicro H8DME-2 Motherboard
SuperMicro H8DM8-2
SuperMicro H8DM3-2
SuperMicro H8DII-F
SuperMicro H8DII
SuperMicro H8DI3-F
SuperMicro H8DI3
SuperMicro H8DGU-F
SuperMicro H8DGU Motherboard FULL MFR
SuperMicro H8DCR-I
SuperMicro H8DCR-3
SuperMicro H8DCL-IF
SuperMicro H8DCL-I
SuperMicro H8DCL-6F
SuperMicro H8DCL-6 Motherboard FULL MFR
SuperMicro H8DCE-HTe
SuperMicro H8DAR-I
SuperMicro H8DAR-E
SuperMicro H8DAI-F MB CHECK W/ US FOR AVAILABILITY 1ST
SuperMicro H8DAI-2
SuperMicro H8DAI MB CHECK W/ US FOR AVAILABILITY FIRST
SuperMicro H8DA8-2
SuperMicro H8DA8
SuperMicro H8DA6-F
SuperMicro H8DA6
SuperMicro H8DA3-2
SuperMicro C7Q67-H Motherboard FULL MFR
SuperMicro C7Q67
OMRON SYSMAC C40K Programmable Controller. C40K-CDR-A.
Omron C200H-RT201 SYSMAC Remote Slave I/O Module
NetGear ProSafe GSM7228PS-100NAS 24-Ports Gigabit POE Stackable Switch
Modicon AS-J890-101 Remote I/O Processor Module
Mitsubishi MELSEC Extension Unit FX2N 48 ER-DS
Indramat DDS02.1-A100-D Digital AC Servo Controller
GE Fanuc IC670CHS001E I/O Base w/ Output Input Modules.
GE FANUC I/O MODULE IC660EBD110P 115VAC 16CKT
Factory 1794-OE4 2009 Date Code ALLEN BRADLEY FLEX I/O 1794-0E4
Factory 1756-IF4FXOF2F Late Date Code Allen Bradley 1756-IF4FX0F2F
CISCO WS-X401310GE 4013 2 x 10GE
Cisco CISCO7206VXR Router Chassis
Cisco CCNA CCNP Lab 1x 3640 2x 2621 2x C2950
Cisco CCNA CCNP CCIE Complete Lab Kit
Allen-Bradley PCB Operator Digital I/O Module 8000-IOBD 8000IOBD 900061
Allen-Bradley 8000 IOAA 8000IOAA 5V DC DRIVER DIGITAL I/O MODULE PCB 900100
Allen Bradley 1769-OB32 Compact I/O Output Module
Allen Bradley 1769-IF4I/A Compact I/O Isolated CUR/VOLT Input Module
AIR-LAP1041N-A-K9 CISCO ACCESS POINT 802.11G/N FIXED UNIFIED W/INT ANT A
ABB DSDX B001 Digital I/O Module 57160001-TP/1
ABB Advant 110 DI module DI610 32DI channels
6 Drive bay server base with Dual Xeon motherboard
1794-IE4XOE2 Allen Bradley FLEX I/O 1794-IE4X0E2
1771-HS3A IMC-123 AXIC SERVO CONTROLLER WITH PANEL AND MEMORY
1756-IF4FXOF2F Late Date Code Allen Bradley ControlLogix 1756-IF4FX0F2F
1756-IF4FXOF2F Allen Bradley ControlLogix 1756-IF4FX0F2F
Gould Modicon Output Module B550B55O
Gould Modicon Modbus System Planning User's Manual 1982
Gould Modicon ML-C584-MTN Rev B 584 PC System 584 Programmable Controller Manual
Gould Modicon Maintenance Manual Power Supply 184 384 CRT Panel1978
Gould Modicon J474 Communication Option AS-J474-000
Gould Modicon Division Field Engineering Modicon 484 PLC 500 Series Manual1981
Gould Modicon Division Field Engineering Maintenance Manual PLC Modicon 484
Gould Modicon Division Circuit Board PCB ASSY M485 Rev B ASSYM485
Gould Modicon Division 184 384 Manual 1981 40015
Gould Modicon Circuit Board PCB-S212-200 Rev APCBS212200PROM Combination 4004
Gould Modicon Circuit Board PCB-S210PCBS210 Rev B1PCB-S21OPCBS21O
Gould Modicon Circuit Board PCB5213000 PCBS213000 PCBS213OOO Rev D
Gould Modicon C184-614 Programmable Controller 184
Gould Modicon B575 202 Stepping Motor Control Stepper Drive Step
Gould Modicon Analog Input -10V/10VB573015B573O15B573
Gould Modicon Analog Input 0-10VB573B573-010B573010B573-O1OB573O1O
Gould Modicon AEG Circuit Board AS-516P-008AS516P008REV C25
Gould Modicon AEG Circuit Board AS-516P-008AS516P008REV C04
Gould Modicon AEG Circuit Board AS-516P-007 AS516P007
Gould Modicon AEG Circuit Board AS-516P-007 AS516P007
Gould Modicon AEG Circuit Board AS-509P-003 AS509P003 REV A7
Gould Modicon AEG Circuit Board AS-509P-003 AS509P003
Gould Modicon 92-00597-05 Operator Interface Support System MM-PMC2-200
Gould Modicon 92-00597-05 Operator Interface Support System MM-PMC2-200
Gould Modicon 584 PC PID Programming Manual ML-584P-USE Rev B
Gould Modicon 584 PC ML-C584-MTN RevA Maintenance Manual Programmable Controller
Gould Modicon 584 PC ASC II Programming Guide ML-A584-USE Controller Manual
Gould Modicon 484 Users Manual PLC ML-C484-000 1980
Gould Modicon 484 PC Programmable Controller ML-C484-MTN RevA Maintenance Manual
Gould Modicon 484 PC Program Tape / P190 ML-P190-001 ML-P190-USE Manual
Gould Modicon 484 PC Ladder Lister P190 Programmer Instructions1982
Gould Modicon 484 Manual 1979 CRT Panel Monitor
GOULD Modicon 13-4618-10 RMS CONVERTER Level Plug in 13461810
GOULD Modicon 13-4615-10 DC Amplifier 13461510
Gould Modicon 11-0161-101 Personality Module Card Circuit Board 11-0161-00
Gould Magnetic Contactor M203 M2O3C Size 1
Gould I/O Housing Model B546 With Attached Unit That Has No Model No. see pics
Gould Gettys N360 Version 11-1060-41 12.5 Amp 11106041
Gould Gettys N360 Servo Controller Half Wave A121 CNC
Gould Gettys Drive N360 A121 Version A121-03136-G04
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。
Gould Electronix 984 PC System Planning Installation Guide GM1984-003 Rev A
Gould Data Access Hand Held Terminal MA-P964-000
Gould Data Access Hand Held Terminal MA-P964-000