直流电机具有响应快速、较大的起动转矩、 从零转速至额定转速具备可提供额定转矩的性能，但直流电机的优点也正是它的缺点，因为直流电机要产生额定负载下恒定转矩的性能，则电枢磁场与转子磁场须恒维持90°，这就要藉由碳刷及整流子。碳刷及整流子在电机转动时会产生火花、碳粉因此除了会造成组件损坏之外，使用场合也受到限制。交流电机没有碳刷及整流子，免维护、坚固、应用广，但特性上若要达到相当于直流电机的性能须用复杂控制技术才能达到。现今半导体发展迅速功率组件切换频率加快许多，提升驱动电机的性能。微处理机速度亦越来越快，可实现将交流电机控制置于一旋转的两轴直交坐标系统中，适当控制交流电机在两轴电流分量，达到类似直流电机控制并有与直流电机相当的性能。
此外已有很多微处理机将控制电机必需的功能做在芯片中，而且体积越来越小；像模拟/数字转换器（analog-to-digital converter，adc）、脉冲宽度调制(pulse wide modulator，pwm）…等。直流无刷电机即是以电子方式控制交流电机换相，得到类似直流电机特性又没有直流电机机构上缺失的一种应用。
WEIGEL WGL.RN.060MV/1000A_05_B Shunt resistance 60 mV / 1000 A Class 0.5 to DIN 43 703 type B 60 mV / 1000 A
WEIGEL DGW2.2 0-1625kw(48..62hz) 250/1A 6000/100V 4-20mA 2..10V
WEIGEL EQ96K 0-1A=》0-800A
WEIGEL SHUNT 60MV 800A， 137-9052
WEIGEL SUS-01-Q-2/G-220DC
WEIGEL EQ 72K
WEIGEL PQ96K 0-40V
WEIGEL PQ96K
WEIGEL AMPQ72KDZS012 4-20mA Skala: 0-300A
WEIGEL PQ48K 0-40microA
WEIGEL PQ96K 60-0-60mv
WEIGEL LSP72K meas.range 4-20ma SCALEO-1000N/M
WEIGEL WGL.RN.060MV/0300A_05_B Shunt resistance 60 mV / 300 A Class 0.5 to DIN 43 703 type B 60 mV / 300 A
WEIGEL 674.110.00 EQ48K Sonder-MB: 0-250/500 mA Skala: 0-250/500 mA
WEIGEL AMEQ72KLZS001
WEIGEL PQ72K 0-20MA
WEIGEL AU2.0 0-1A
WEIGEL LSP96K 4-20mA 90×90mm
WEIGEL WGL.RN.060MV/0300A_05_B Shunt resistance 60 mV / 300 A Class 0.5 to DIN 43 703 type B 60 mV / 300 A
WEIGEL PSQ48(4~20mA 带零位调整）48mmX48mm
WEIGEL 800.7339.S.1KA.60mV
WEIGEL DAS10-40PIR
WEIGEL Q96K5A(10)400/5A
WEIGEL V1U2.2 0..120V(48..62hz) 4-20mA
WEIGEL PQ96K-+/-60MV/6;5KA
WEIGEL MP96 24K CA
WEIGEL PQ48K 4...20mA 0...315Bar
WEIGEL SY96S 100V 50HZ WITH FULLSIZED REAR COVER
WEIGEL AUE2.2 0-1A 4-20mA
WEIGEL 2EQ96/2 0-800V
WEIGEL VU03
WEIGEL AMPQ72KDZS010
WEIGEL DPA 10-31E10G
WEIGEL EQ144K/1A/300A
WEIGEL PQ72K 10V 120%
WEIGEL SHUNT 6000A/60MV/CLASS 0.5
WEIGEL 652.02.121600 SUS-01-Q R/G 220V DC
WEIGEL EQ96K 0-1A=》0-800A
WEIGEL PQ96K 0-10V:=0-150A
WEIGEL P72PRS
WEIGEL DPA 10-31E10G
WEIGEL EQ96K 0-500V
WEIGEL EQ96K 0-1A =》0-1600A
WEIGEL EQ96K 0-1A=》0-800A
WEIGEL shunt-150mV-1000A-0.5
WEIGEL EQ96K 100/5A
WEIGEL LSP96
WEIGEL TYPe:PQ Y24 MB 0-20MA 200% 输入电压:24V DC
WEIGEL FQ96/2
WEIGEL EQ48 150/5A
WEIGEL EQ96K500V
WEIGEL EQ48K 15/5A
WEIGEL SHUNT 4000A/60MV/CLASS 0.5
WEIGEL DPA 10-31E10G
WEIGEL PQ96K 60-0-60mv
WEIGEL DPA14-31A10R-4-M
WEIGEL EQ96K 0-500V
WEIGEL AUE2.2 0-1A 4-20MA 220V
WEIGEL SHUNT 6000A/60MV/CLASS 0.5
WEIGEL PQ48K 0-40MICROA
WEIGEL BIEQ 72K 15min 3000/1A
WEIGEL DPA 10-31E10G
WEIGEL LSP144
WEIGEL SHUNT 6000A/60MV/CLASS 0.5
WEIGEL EQ144K/1A/80A
WEIGEL PQ96K
WEIGEL EQ144K/1A/40A
WEIGEL DSA13-NP40/C1R-07
WEIGEL KL0.5，2000Amp/150MV
WEIGEL RW96min/max 150V(0-1A）
WEIGEL SHUNTISO. PLATE ARGE 155X90X6MM TRAFO，870-93260
WEIGEL RW96MIN
WEIGEL EQ48 10A
WEIGEL PQ 72 INPUT-10V DC
WEIGEL DAS10-40PIR
WEIGEL AU2.0 0-1A
WEIGEL EQ96-X CT 300/5A scale 0—300A 2倍过载 无红线
WEIGEL 250V
WEIGEL PQ96K-+/-30VDC
WEIGEL TYPE:V1U 2.2 SN:26057009
WEIGEL EQ96K 100/5A
WEIGEL PQ96K 0-10V 0-120% POTI (0-10VDC/1mA + scale 0-120% w.pot )
WEIGEL WGL.PQ96K.0-10V.1000A_DC Analog meters with moving-coil movement measuring range 0…10 V DC scale 0…1000 A linear accuracy class 1.5
WEIGEL Type: VQ72K 0-750V Production ID: 1TNS08030129R1
WEIGEL AU2.0 Input: 0...1A Output: 0...20mA
WEIGEL EQ144K/1A/20A
WEIGEL 电流表 PQ 48K 4-20mA
WEIGEL A1U 2.3
WEIGEL WQ96/2S
WEIGEL WQ96RS SCALE:0-24KV
WEIGEL DSA55-NS50/A2RW-12
WEIGEL DPA 10-31E10G
WEIGEL PQ96K-+/-30VDC
WEIGEL EQ 72K N/1A AC
WEIGEL DUW2.1
WEIGEL 电压变送器/V1U2.0
WEIGEL US-02 G/R 220VDC
WEIGEL PQ96K 10V 0-8000
WEIGEL EQ48K 0-250/500MA
WEIGEL LSP96K
WEIGEL AU2.0 Input: 0...5A Output: 0...20mA
WEIGEL EQ48-MESSB:10A-SKALA:0-10A+STTX*
WEIGEL DUW2.1
WEIGEL LSP72K meas.range 4-20ma SCALEO-1000N/M
WEIGEL Type: VQ72K 0-750V Production ID: 1TNS08030129R1
WEIGEL EQ96K 0-500V
WEIGEL AC 0..500V （Moving-iron meter AC 0..500 V ）
WEIGEL SHUNT 1500A/60MV/CLASS 0.5
WEIGEL 869.7330.1 50KA/250ms
WEIGEL DAS10-40P1R NR：943622-003
WEIGEL AU2.0 0-1A
WEIGEL DA12-NA40/F10R 72*24
WEIGEL 电流变送器/A1U2.0
WEIGEL EQ96K 100/120V 0-20/24kV
WEIGEL SHUNT 6000A/60MV/CLASS 0.5
WEIGEL EQ72K 50/100/5A
WEIGEL EQ96K500V
WEIGEL SHUNT ISO.PLATE ARGE 155X90X6MM， 870-93260（R021安装盘）
上海祥树WEIGELFQ96/2
上海祥树WEIGELFQ96/2
