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Motor electronic governor controller 5

2016-09-01 09:54  
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Motor electronic governor controller 5
The circuit work theory This motor electronic governor controller circuit is composed of SCR VT, diode VD1, VD2, bidirectional trigger diode VD, LED VL1, VL2, capacitors C1, C2, resistors R1-R8, speed regulation switch S and motor M, the circuit is shown in the figure 8-62. When the speed regulation switch S gear is changed, the charge-dischange rate of capacitor C is changed, then the SCR VT conduction angle is changed too. The voltage on both sides of C1 will trigger and turn on VT by VD, the AC voltage on both sides of motor M can be changed by changing the conduction angle of VT, then M's running speed is changed too.