The resistance values are determined in order to limit the current in control circuit to the lowest value, while preserving correct operation of the circuit. This diagram shows the optocoupler TCST 2103 represented by outlets marked EM1 and DET1. The voltage of 10-35 V DC is connected via the voltage regulator 7808. The positive pole of 5-31 V direct current supply voltage is linked with stator coils via connectors L1 to L8. The left side of this diagram shows the connection points of supply voltage. The electric circuit can be divided into the output part separated from the low input power section by means of a control electrode MOSFET on IRF540N transistors. The figure shows one quarter of the wiring only to save space.
The circuit in the right side of the figures behind dashed line is repeated 4 times in total.
Wiring diagram of the electric circuit for motor control.
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