OptoNews Tip: Top 4 tech tips from 2016

Posted by Jean Femia on Jan 4, 2017 3:39:10 PM

Did you miss any of these technical tips?

Now's a good time to review some automation basics—and look ahead to new technologies in our field.

Accuracy and resolution. Specifications for both of these are included for our analog modules. What's the difference?

Sinking and sourcing. What do these terms mean when you're wiring digital DC outputs, and which is the better way to wire? Lots of questions and answers on this one.

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Topics: Discrete control, Tips, optonews, I/O, SSRs, Node-RED, OptoNews 2017-01-04, Raspberry Pi, Digital I/O for Raspberry Pi

OptoNews Tip: SSR or EMR - Which should you use?

Posted by Jean Femia on May 25, 2016 3:25:21 PM

We've been manufacturing solid state relays (SSRs) for more than 40 years now.

In fact, that's how Opto 22 started: our founders discovered a better way to build SSRs.

So of course we want you to use SSRs. (And choose Opto's guaranteed-for-life models!) 

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Topics: optonews, SSRs, OptoNews 2016-05-25

Selecting a solid-state or electromechanical relay for an application

Posted by David Hill on Apr 8, 2016 12:52:43 PM

Opto 22 knows solid-state relays (SSRs) very, very well. We’ve been manufacturing our optically isolated, epoxy-filled SSRs for more than 40 years, and over that time have gained quite a bit of practical knowledge and experience about using SSRs in applications.

SSRs have replaced electromechanical relays (EMRs) in many applications, thanks to their advantages:

  • long service life
  • low noise generation
  • compact size
  • no moving parts
  • total absence of arcing

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Topics: Tips, SSRs

OptoNews tip: How to test an AC SSR

Posted by Jean Femia on Jan 20, 2016 4:09:49 PM

Solid state relays (SSRs) are simple, reliable devices. If one stops working, typically it just refuses to turn on or off.

How do you test it to see if it has failed?

If you're used to testing mechanical relays, you'll find an SSR requires a different testing method: it requires a load.

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Topics: Tips, optonews, SSRs, OptoNews 2016-01-20

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