IC697CMM712

电压型与电流型有什么不同？ 变频器的主电路大体上可分为两类：电压型是将电压源的直流变换为交流的变频器，直流回路的滤波是电容；电流型是将电流源的直流变换为交流的变频器，其直流回路滤波石电感。 为什么变频器的电压与电流成比例的改变？ 异步电动机的转矩是电机的磁通与转子内流过电流之间相互作用而产生的，在额定频率下，如果电压而只降低频率，那么磁通就过大，磁回路饱和，严重时将烧毁电机。因此，频率与电压要成比例地改变，即改变频率的同时控制变频器输出电压，使电动机的磁通保持，避免弱磁和磁饱和现象的产生。这种控制方式多用于风机、泵类节能型变频器。

OHMITE 0327 MODEL J RHEOSTAT POTENTIOMETER CERAMIC 1600OHM 50W RESISTOR B464923

NA WM50 L9 ZBS 30/165E 5.6OHM RESISTOR D339752

HVR PENTAGON ACH60 1447 03 01 120V-AC 80W RESISTOR D454940

DANOTHERM GBF 30/156 6.8OHM RESISTOR D494040

OHMITE RNS900 MODEL N RHEOSTAT 900OHM 300W POTENTIOMETER 0.577A AMP B334537

CLAROSTAT 140-6324 50OHM 160W RESISTOR D470475

OHMITE R 0861 7923 RHEOSTAT CERAMIC 2.52A AMP 80OHM RESISTOR B355193

OHMITE RPS400 400OHM RHEOSTAT RESISTOR 600V-AC 225W 400OHM B333908

OHMITE IC9006C101A650 650OHM RESISTOR D512697

OHMITE 138A1068P13 1.41A AMP 150OHM RESISTOR D374822

OHMITE 147A4867 P9B 22OHM RHEOSTAT WIREWOUND POTENTIOMETER RESISTOR D451815

RELIANCE 77869-RB CERAMIC WIREWOUND 0.023OHM RESISTOR B469265

ALLEN BRADLEY JA1N200P503BA TYPE J POTENTIOMETER 50K-OHM RESISTOR B470488

DUNCAN 3253 POTENTIOMETER 100KOHM 100000OHM RESISTOR D307424

DALE NHL-120-04Z-5 5% TOLERANCE FIXED 44A339007-001 7K-OHM 80W RESISTOR B485907

SIEMENS SIOV-B40K230 BLOCK METAL OXIDE VARISTOR RESISTOR B350100

WESTINGHOUSE 334366 4266OHM RESISTOR D442982

OHMITE MODEL P WIRE WOUND RHEOSTAT 1.22A 150OHM 600V-AC RESISTOR B380966

GENERAL ELECTRIC GE A100GEA 1100OHM RESISTOR D497236

OHMITE 138A1068P22 TYPE MP40 2500 OHM RHEOSTAT RESISTOR 300W 0.346A AMP B334550

MEMCOR 8639 AR160 250OHM RESISTOR D307846

POST GLOVER PR04500P132/189?93 36OHM 3100W RESISTOR D504474

IPC RESISTORS CERAMIC CENTER GLIDE-ON RESISTANCE MESH 2.6OHM RESISTOR B279666

OHMITE MODEL R 0856 RHEOSTAT 325OHM 600V-AC RESISTOR B283194

CTG31781 A25D100000DA 100K-OHM RESISTOR D406620

CLAROSTAT 42-900 SERIES POTENTIOMETER 2.5K-OHM RESISTOR B464891

OHMITE N 39467.A RHEOSTAT 10800OHM POTENTIOMETER 600V-AC B329303

OHMITE P WIRE WOUND POWER RHEOSTAT 1.73A AMP 75OHM 600V-AC RESISTOR B361708

IWAKI RH120 50OHM RESISTOR D506805

MILWAUKEE 31-03-1513 ELECTRICAL ADJUSTABLE POWER 116OHM RESISTOR B274917

ALLEN BRADLEY RC20GF330J EB3305 FIXED 33OHM 350V-AC RESISTOR B476270

WESTINGHOUSE VR 825 THREE CIRCUIT 1000/1290OHM RESISTOR B348816

OHMITE 0327 RHEOSTAT POTENTIOMETER CERAMIC 1600OHM 50W RESISTOR B464924

OHMITE 0327 MODEL J RHEOSTAT POTENTIOMETER CERAMIC 1600OHM RESISTOR B464749

STAUBLI RX60B L CS7B 6-AXIS 3PH 208V-AC ROBOT & CONTROLLER D515930

STAUBLI CS7B RX60B CONTROLLER 3PH 208V-AC 3700VA D513382

ADEPT 10335-01201 ROBOT CABLE ARM SIGNAL D509358

ADVANCE 9R924AR1 RESEARCH & ROBOTICS CMOS MEMORY MODULE BOARD ROBOT B206467

ADEPT 90840-45000 ENCODER DISK KIT REPLACEMENT PARTS ROBOT D506348

ROMAN IRB6400 SPOT WELDING ROBOT ATTACHMENT W/ LIQUID COOLED TRASFORMER D492147

ADEPT 10332-11000 REV D MANUAL CONTROL III OPERATOR ROBOT TEACH PENDANT D515999

ADEPT 841 ROBOTIC ARM D508623

RAD ROBOTIC D-4418 PNEUMATIC UNI-COUPLER SAFETY JOINT ASSEMBLY D342405

RAD D-4418-B-01 PNEUMATIC GRIPPER ARM ATTACHMENT ROBOT D361507

ADEPT 841 COBRA 800 ROBOT ASSEMBLY ROBOTIC ARM D508891

ADEPT 841 COBRA 800 ROBOT ASSEMBLY CABLES CONTROLLER POWER SUPPLY D504650

ADEPT 841 COBRA 800 ROBOT ASSEMBLY CABLES CONTROLLER POWER SUPPLY D504647