140XCA10215 工控机
变频调速器是把工频电源(50Hz或60Hz)变换成频率的交流电源，以实现电机的变速运行的设备，其中控制电路完成对主电路的控制，整流电路将交流电变换成直流电，直流中间电路对整流电路的输出进行平滑滤波，逆变电路将直流电再逆成交流电。
变频调速器（frequency changer / frequency converter）是一种用来改变交流电频率的电气设备。此外，它还具有改变交流电电压的辅助功能。
过去，变频调速器一般被包含在电动发电机、旋转转换器等电气设备中。随着半导体电子设备的出现，人们已经可以生产独立的变频调速器。
对于如矢量控制变频器这种需要大量运算的变频器来说，有时还需要一个进行转矩计算的CPU以及一些相应的电路。变频调速是通过改变电机定子绕组供电的频率来达到调速的目的。
变频技术是应交流电机无级调速的需要而诞生的。20世纪60年代以后，电力电子器件经历了SCR(晶闸管)、GTO(门可关断晶闸管)、BJT(双型功率晶体管)、MOSFET(金属氧化物场效应管)、SIT(静电感应晶体管)、SITH(静电感应晶闸管)、MGT(MOS控制晶体管)、MCT(MOS控制晶闸管)、IGBT(绝缘栅双型晶体管)、HVIGBT(耐高压绝缘栅双型晶闸管)的发展过程，器件的更新了电力电子变换技术的不断发展。20世纪70年代开始，脉宽调制变压变频(PWM－VVVF)调速研究引起了人们的高度重视。20世纪80年代，作为变频技术核心的PWM模式优化问题吸引着人们的浓厚兴趣，并得出诸多优化模式，其中以鞍形波PWM模式效果佳。20世纪80年代后半期开始，美、日、德、英等发达国家的VVVF变频器已投入市场并获得了广泛应用。
VEXTA PH268-E2.3B STEPPING MOTOR 2 PHASE 1.8/STEP DC2.3A #K51
Vexta PH268-E1.6B 2Ph.-Schrittmotor DC1,6A 1,8° Neu/OVP
VEXTA PH268-23-A11 2 PHASE STEPPING MOTOR ** 1.8 DEG. 0.34A 24V (3K4)
Vexta PH268-23, 2 phase stepper motor 1.8 degree
Vexta PH268-23 Stepping Motor -
Vexta PH268-21-A30 2-Phase Stepping Motor
Vexta PH268 2 Phase 1.8 Stepping Motor + Cable Pulled from UVA Medical Surplus
VEXTA PH266M-E1.2B PH266ME12B
Vexta PH266M-E1.2B 2-Phase Stepping Motor
VEXTA PH266M-E1.2 PH266ME12
Vexta PH266L-33-A1, 2 Phase stepper motor 1.8 degree with mount, pulley, bearing
Vexta PH266L-32B-C5 PH266L32BC5 2 Phase Stepping Motor With Encoder - No Box
Vexta PH266L-01B 2-Phase Stepping Motor
VEXTA PH266L-01 MOTOR, STEPPING, 2-PHASE DUAL MOTOR ASSY
VEXTA PH266-E1.2-C19 PH266E12C19
VEXTA PH266-02B PH26602B
VEXTA PH266-02B PH26602B
Vexta PH266-02 2Ph Stepping Motor
VEXTA PH266-01GK 2PH STEPPING MOTOR 6V 1.2A 1.8°/step W/ 2GK5KA GEAR HEAD
Vexta PH266-01-C82 2-Phase 1.8/Step Stepping Motor 6VDC 1.2A Single Shaft PARTS
Vexta PH266-01-C82 2-Phase 1.8/Step Stepping Motor 6VDC 1.2A Single Shaft
VEXTA PH266-01-C7 PH26601C7
Vexta PH266-01B-Q5 Oriental Motor
VEXTA PH266-01B-C167 PH26601BC167
VEXTA PH266-01 STEPPING MOTOR; DC 6V 1.2A, 2-PHASE 1.8-DEGREE
VEXTA PH266-01 STEPPER MOTOR 2-PHASE 6VDC 1.2A
VEXTA PH266-01 Stepper Motor
VEXTA PH265M-33-C3 PH265M33C3
VEXTA PH265M-31 2-Phase Stepping Motor
VEXTA PH265M-31 2 PHASE STEPPING MOTOR ***XLNT***
VEXTA PH265L-05 PH265L05
Vexta PH265L-05 Stepper Motor 1.4VDC 3.8A 1.8°/Step, 1/4" Input, 2 Phase
VEXTA PH265L-05 - Large Stepper - 5V 2 Phase 1.8 Deg Step - Arduino - CNC
Vexta PH265L-04B with 30 day warranty
VEXTA PH265L-01 PH265L01
Vexta PH265-E2.6B Stepping Motor 2-Phase 1.8degree/step
VEXTA PH265-E1.0 PH265E10
VEXTA PH265-05B-C1 PH26505BC1
VEXTA PH265-05 STEPPING MOTOR 2PH, 1.8DEG/STEP, 1.4VDC, 3.8A
Vexta PH265-05 B, 1,8 Deg./ Step, Schrittmotor Stepping Motor
Vexta PH265-04 Stepping Motor PH26504
Vexta PH265-04 Stepping Motor MADE IN JAPAN
Vexta PH265-04 c6072-9212 Stepping Motor MADE IN JAPAN UNTESTED
Vexta PH265-04 2 PH 1.8DEg/Step Stepping Motor
VEXTA PH265-01B STEPPING MOTOR
Vexta PH264-E1.5B 2 phase Stepper Motor
VEXTA PH264-E1.5, 2-PHASE STEPPING MOTOR, 1.8° / STEP
Vexta PH264-E1.5 2 Phase Stepping Motor
Vexta PH264-E1.5 2 phase Stepper Motor, in Box
VEXTA PH264-03 PH26403
Vexta PH264-03 Stepper Motor 2 Phase Stepping 1.8IN Step DC24 0.2AMP
VEXTA PH264-03 PH26403
Vexta PH264-02 2Ph Stepping Motor
Vexta PH264-01-C66 2-Phase 1.8°/Step 1.1A Gear Stepping Motor
VEXTA PH264-01B PH26401B
VEXTA PH2610-01B-C16 PH261001BC16 SERVO STEPPER MOTOR w/ D6CL-6.3 DAMPER
VEXTA PH2610-01 Stepper Motor
VEXTA PH 264-E1,5 Gleichstrommotor Getriebemotor DC
VEXTA PAVR-20KY PAVR20KY
VEXTA PAL5 PAL5
VEXTA PAL3N PAL3N
VEXTA PADP01 PADP01
VEXTA P/N A4607-9415 5- PHASE STEPPING MOTOR -
VEXTA OSD-304U OSD304U
Vexta Oriental Stepping Motor Tested, PK566BW-210, 5 Phrase, DC 1.43V 1.4A
VEXTA ORIENTAL STEPPING MOTOR PH 266-01-M2 6V 1.2 AMP
Vexta Oriental Stepping Motor Model C7387-9212 2-PHASE 1.8°/Step P/N: WAT045454
Vexta Oriental Stepping Motor 1/2" Shaft C8429-9212K
Vexta Oriental stepping MOT0R pk264b1a-sg10 IN THE BOX!
Vexta Oriental stepping MOT0R PH266M-E1.2B IN THE BOX!
VEXTA ORIENTAL STEPPER MOTOR TWO PHASE WITH OPB 10W55
Vexta Oriental Stepper Motor ASM66AC 2 Phase CNC Router
Vexta Oriental Stepper Motor ASM66AAE 2 Phase CNC Router
Vexta Oriental STEPPER MOTOR 12VDC PX244-03AA IN THE BOX!
VEXTA ORIENTAL STEP MOTOR & GEARHEAD A3939-9412 1.8DEG/STEP 1.8V 4.5A. 4 LEADS
VEXTA ORIENTAL SG8030D STEPPING MOTOR ConTROLLER 24VDC 0.1A QUANTITY!!
VEXTA ORIENTAL PMM33AH2 STEPPER MOTOR 0.72° DEGREE 0.75A
Vexta Oriental PK569AUA 5 phases stepper motor 0.72°/step
VEXTA ORIENTAL PK266-02A 2 Ph 1.8 STEP STEPPER MOTOR & 2' POSITIonER ROD LASER
Vexta Oriental Motors PH296-03 2-Phase Stepper Motor 1.8 Deg/Step 14 VDC 0.7A
Vexta Oriental Motors Operational Unit OPX-1
Vexta Oriental Motor UPH596-AM 5Phase Stepping Motor,
VEXTA ORIENTAL MOTOR UDX5107N 5 PHASE DRIVER
VEXTA Oriental Motor UDX5107-A2 STEPPING MOTOR DRIVER
VEXTA Oriental Motor Stepper Motor Driver B2103-0724AS with Cables
VEXTA Oriental Motor Stepper Motor Driver ASM46AA-T7.2 Gear Head B2103-0724AS
VEXTA ORIENTAL MOTOR SERVO ConTROL 2 PHASE DRIVER 100 VAC MODEL UD2115
Vexta Oriental Motor PX244M-02A-C12 Stepping Motor
Vexta Oriental Motor PX244-02A Stepping Motor
Vexta Oriental Motor PK569-NBC Schrittmotor mit Dämpfer #7675
VEXTA ORIENTAL MOTOR PK566-NAC STEPPER MOTOR DC 1.4A ***XLNT***
VEXTA ORIENTAL MOTOR PK564NAWA-T7.2 5-PHASE 0.1/STEP DV 0.87V 1.4A STEPPER MOTOR
Vexta Oriental Motor PK268-E2 0A Stepping Motor
Vexta Oriental Motor PK268-03B Stepping Motor
Vexta Oriental Motor PK268-01B PK26801B 2-Phase 1.8°/Stepping Motor
VEXTA ORIENTAL MOTOR PK243B1A SG9 2 Phase Stepper Motor
VEXTA ORIENTAL MOTOR PH569-A STEPPER MOTOR 0.72DEG/STEP DC1.4A **XLNT**
Vexta Oriental Motor PH265M-31 Stepping Motor
Vexta Oriental Motor PH265-02-C32 Stepping Motor
VEXTA ORIENTAL MOTOR PH 266-01-M2 6V 1.2AMP WITH BRAKE
Vexta Oriental Motor KXSM280-BL AC Servo Motor 80W
VEXTA ORIENTAL MOTOR FBLM5120A-GF BRUSHLESS DC MOTOR 3000RPM 120W ****NNB****
VEXTA ORIENTAL MOTOR FBLD20C BRUSHLESS DC MOTOR DRIVER
Vexta Oriental Motor Driver, CC05FBL
Vexta Oriental Motor DFC5114P Driver
VEXTA ORIENTAL MOTOR DC STEPPING MOTOR 6 VDC 2 AMP MODEL PH299-02
VEXTA ORIENTAL MOTOR DC STEPPING MOTOR 5 VDC MODEL PH265L-04 (2 AVAILABLE)
Vexta Oriental Motor CRD5107P Stepping Motor Driver
VEXTA ORIENTAL MOTOR CO., STEPPING MOTOR PK299