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Automation, sensing and robotics • Re: Advice on switching a high power relay.

Look for a power relay e.g. https://de.farnell.com/en-DE/finder/22- ... dp/4179766
You get this type of relay in almost every contact current rating needed.

Such relay are available with coil voltage 24V. Perhaps your "industrialized RPI 4b" already has 24V outputs which can drive these devices.

Or use a 24V DC supply and drive the relay using a logic level mosfet (plus flywheel diode of course). A perfect solution would be to add a optoisolator to have the 24V circuit fully isolated from the RPi.

Could be you need a snubber network parallel to the contacts to extend contact lifetime.

Statistics: Posted by ghp — Thu Dec 28, 2023 10:50 pm



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