Electronics > Projects, Designs, and Technical Stuff

Did I mess up? SSR control

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antonmi97:
Hello everyone!

This is my first forum post, and to be honest, I'm not really happy that I have to post this question, because it seems trivial. Anyhow, here we go.

I am designing a SSR mains light controller board and I want to controll the SSR with a GPIO of my ESP8266.

The SSR is the AQH3213 http://www.farnell.com/datasheets/1682136.pdf?_ga=2.232540383.1564095963.1554464329-1879432376.1547653567


I did this   

And I'm not sure if it will work. Can anyone clear things up a bit for me?

pelule:
Missing some needed connection in your schematic ... U2 / pin (4) == cathode of the opto-LED should be tied to ground or you have a floating circuit.
/PeLuLe

antonmi97:
It’s just hidden. All GND pins in my schematic are hidden and connected to the GND net. The only thing worrying me is if the SSR will even turn on. I tried turning a LED on (that works), but I’m not sure I understand what it takes to turn on the SSR (I don’t understand it’s datasheet). Any help is appreciated

langwadt:

--- Quote from: antonmi97 on April 05, 2019, 07:47:52 pm ---It’s just hidden. All GND pins in my schematic are hidden and connected to the GND net. The only thing worrying me is if the SSR will even turn on. I tried turning a LED on (that works), but I’m not sure I understand what it takes to turn on the SSR (I don’t understand it’s datasheet). Any help is appreciated

--- End quote ---

it is just like driving an LED, 20mA to be use it turns on

I don't see why you need all that stuff

antonmi97:
I thought so too, but I wasn’t sure. So you think it would work with just directly connecting a GPIO pin (with a current limiting resistor) to the VCC pin of the SSR? I don’t need a voltage divider?

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