描述
注意运放的输出摆幅
任何运放都不可能是理想运放,输出电压都不可能达到电源电压,一般基于MOS的运放都是轨对轨运放,在空载情况下输出可以达到电源电压,但是输出都会带一定的负载,负载越大,输出降落越多。基于三极管的运放输出幅度的相对值更小,有的运放输出幅度比电源电压要小2~6V,比如NE5532.图4-1就是TI的TLC2272在+5V供电的输出特性,它属于轨对轨运放,如果用该器件作为ADC采样的前级放大(如图4-2),单电源+5V供电,那么当输入接近0V的时候,输入和输出变得非线性的了。解决的方法是引入负电源,比如在4脚加入-1V的负电源,这样在整个输入范围内,输出与输入都是线性的了。
主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
Indramat Servo Controller – HDD02.2-W040N
Cincinnati Milacron 3-700-0200A Power Supply
Cutler Hammer CE15TN3C80 3 Pole Contactor Series B1 NEW
Volkmann Variable Freq. Drive 71190AA – AC Drive,
Mitsubishi FR-A520-45K Freqrol A500 Inverter Drive
Indramat MAC071C-0-NS-4-C/095-A-0/WI522LV/S001Motor
Indramat MAC071C-0-GS-4-C/0-95-B-0/WI522LV/S001Motor
GROS-ITE 481-524-0002 Precision Spindle Motor, 4/5Hp
Fanuc A61L-0001-0094 12″ CRT Display Module D15CM-04A
Atlas Copco 2101-S7-230R Power Focus Control Unit
Parker CTC EPX08T-XTAA-1 EPX HMI PowerStation (8GB) NEW
GE Control Card VA-4 – 531X300CCHAWM3 – NEW
Siemens Simodrive Control Board – C98043-A1304-L
Danfoss VLT5006 5Hp AC Drive – PT5B20STR0DLF00A00
Fanuc A02B-0120-C071 14″ CRT Display
SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1 E/R-Module
Indramat HDS AC Servo Drive – HDS03.2-W100N
Whedco CMC-1150-1-B Servo Control
SICK PLS101-312 Photoelectric Prox Laser Scanner
Atlas Copco QMR 62-32-RT & QRT 62 200 & 4230 1750 80
Custom Servo Motors PRE-50 Amplifier
Brushless 115UMB300CACAA AC Servo Motor – NEW
Heidenhain ROD 8800003-36000 309 864-01
Heidenhain ROD 8800003-36000 with extra part 309 864-01
Heidenhain ROD 8800003-36000 w/o connector 309 864-01
Heidenhain ROD 800-36000 272 044 21
GE Application Card 531X139APMANG2 – NEW
Yaskawa AC Servo Motor – SGMG-55A2AB – NEW
Indramat Servo Motor – MDD071C-N-060-N2G-095GB0
Tech Motive T0661020SSP3 Electric Fastening Tool Sn3225
Xycom Model 2050, PN 98033-001, 12″ CRT, 120/240Vac
YASKAWA Servo Motor SGMSH-40ACA61 – NEW
Fanuc A06B-6081-H101 Power Supply Module
Fanuc A06B-6079-H291 Servo Amplifier Module
Fanuc A06B-6076-H101 Servo Amplifier
Atlas Copco 2101-S7-230R Power Focus Control Unit
Allen Bradley AC Servo Motor 1326AB-B515E-M2L Series B
Fanuc Opt 2 Board A16B-2202-0851 Analog I/O and H
Allen Bradley 1391-DES45-DI AC Servo Controller
Whedco CMC-4230-1-B Servo Controller
Allen Bradley 8600 Series CNC 8600-2164M Memory Module
Indramat Servo Motor – MDD-093C-N-060-N2L-110GL0
ABB DSQC 320 Robot Remote I/O
Atlas Copco K256871 Fastening Tool
Allen Bradley 1391-DES15-DI Digital AC Servo Controller
Fanuc A06B-6057-H004 Servo Amplifier – NEW
Fanuc A06B-6079-H301 Servo Amplifier Module
Fanuc A16B-2200-0141/09D Base2 with Sub CPU
Sti MiniSafe MS4300 Safety Curtain Transmitter MS4356BX
Siemens 1FK7080-5AF71-1EH0 Servo Motor – NEW
Siemens 1FK7063-5AF71-1EH0 Motor 3000RPM – NEW
Sti MiniSafe MS4300 Light Curtain Receiver 56″ MS4356TR
Kollmorgen/Industrial Drives BDS4-206J-204B2 Amplifier
Indramat Servo Motor – MDD-093B-F-020-N2L-110GA0
Indramat Servo Controller – HDS02.2-W040N-HS12-01-FW
Allen Bradley AC Servo Motor 1326AB-A3G-11-A4
Indramat MAC112C-0-ED-3-C/130-B-1 Motor