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Motor protector circuit diagarm 4

2016-09-03 14:55  
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Motor protector circuit diagarm 4
The motor protector circuit is composed of the current detection control circuit and delay control circuit, and the circuit is shown as the chart. Current detection control circuit is composed of the resistors R0 ~ R5, transistors V1 ~ 171VJ, capacitor C1, diodes VD1 and VD2, Zener diode VS1 and VS2. Delay control circuit consists of resistors R6 ~ R8, capacitor C2, transistors V4, V5 and relay Κ. S1 is the start button, S2 is the stop button, KM is the AC contactor. R0 selects 20W wire wound resistor; R1 ~ R8 select 1/4W metal film resistors. RP uses film variable resistor. C1 and C2 select aluminum electrolytic capacitors with the voltage above 10V. VD1 and VD2 use 1N4007 silicon rectifier diodes. VS1 and VS2 use 1W silicon Zener diodes.