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    SSR w/ mosfet

    Duet Hardware and wiring
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    • FailsafeJim
      FailsafeJim last edited by

      I am using a SSR with a 120v 760w silicone heated mat. Do i need to drive the SSR with a mosfet or can i drive the dc side with the duet?

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      • iDevelo
        iDevelo last edited by

        You can drive it just with the duet. What SSR are you using? The Croydom mentioned here https://duet3d.com/wiki/Connecting_a_bed_heater#Mains_voltage_AC_bed_heater has never let me down.

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        • FailsafeJim
          FailsafeJim last edited by

          ohh ok , someone mentioned burning there board up with a ssr , though I thought it would be excessive to use a mosfet on a ssr I just wanted to be certain I wasn't missing something. thanks

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          • dc42
            dc42 administrators last edited by

            Yes you can drive it directly from the bed heater terminals on the Duet. Be sure to get the polarity of the control wires right, for an SSR it matters.

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

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