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Solid state relay that will turn off when the primary voltage is removed.
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Jim-0000:
I have a small collection of solid state relays. They all trigger the secondary "contact" to conduct when the primary is excited with (in this case) 12 volts.
However, they stay on after the primary voltage is disconnected.
By "stay on", I mean the secondary terminals remain in the closed condition for some time, many seconds, maybe a minute sometimes.
Question:
Can some one suggest a solid state relay for low voltage/current, that has the properties where the secondary follows the primary?
In other words, the secondary "points" open again, after closing, when the primary actuating voltage is removed or switched off.

Jim.
Zero999:
Yes, it sounds like the original poster is using a TRIAC based SSR on DC, which will only turn off, when the secondary power is disconnected.

You need a MOSFET based SSR such as the PVG613.
https://docs-emea.rs-online.com/webdocs/140c/0900766b8140cdcb.pdf
Jim-0000:
Thanks for the replies Blueskull and Zero.
NiHaoMike:
If it helps, SSRs for 12-24V DC are often sold as "3D printer MOSFET modules".
Jim-0000:
It turned out that a simple 4N25 opto coupler did the job that I wanted in this application.

https://www.futurlec.com/LED/4N28.shtml

Thanks for all the good replies.

Jim.

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