Is this circuit adequate to interface a micro-controller with a dc motor using an optocoupler?


Joined Jan 23, 2018
It looks good, but I do not see any means of support for the circuit board except the solder connections to the motor attachment lugs. Both pressing the button and inserting/removing the connectors will transmit forces to those solder joints, as will any mechanical vibrations.


Joined Nov 6, 2012
Just keep in mind that these devices are ( relatively ) SLOW.

They are not useful for PWM or High-Speed-Switching.

Their Outputs can be connected in parallel an/or in series to
provide either more Voltage or more Current to the Gate.