I want to ask, if this circuit will work. I think the flyback from the inductive load the mosfet is connected to will break the optocoupler. The LED is connected through a resistor which should protect it. Also, is the circuit well designed? The inductive loads are 100 Ohms, 28 Ohms, working at 30 volts.

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    \$\begingroup\$ That's a PCB layout and not a circuit. Post a circuit diagram with part numbers. \$\endgroup\$ – Andy aka Dec 13 '18 at 9:49

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