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PSW12 & solenoid valve - is diode protection necessary?

pitacco Jun 23, 2023 09:12 AM

Hi everybody!

I am going to use a PSW12 switching circuit to control a solenoid valve (a 500 mA inductive load). I am wondering whether a standard protection diode (wired in parallel to the solenoid) is necessary to protect the circuit from surge voltage at switching.

Thanks, Andrea

JDavis Jun 23, 2023 02:56 PM

The protection circuitry built into a SW12 module is sufficient to handle the inductive spike of the solenoid.

pitacco Jun 23, 2023 08:00 PM

Thanks!

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