Arduino SSR 5V DC (Mager GJ-3FA-L)

Other Hardware General Electronics
1

I just noticed this SSR that was for DCV instead of all the others that are normally for AC.

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Although I can not find the datasheet for it, it does seem compatible with Arduino. http://www.ebay.com/itm/251138639900 auction site and also SainSmart 2 Channel SSR-2F Solid State Relay 3V-32V 5A For AVR DSP Arduino Mega Uno R3 – SainSmart.com is where I found it.

However, I am just wanting to double check 2 things here:

  1. My thoughts on how to go about wiring it:

I have 2 scenarios here. One that runs 12V out and another that does ground. Is this SSR capable of doing the 0vdc out since I am seeing the output is 5V-220V DC? I'm using the 0V DC to "push" a button (pushing = grounding it) so that the object it's connected to turns on or off.

  1. I gather that when I send 5V DC to the SSR (via Digital Pin 1 or 2) it will open up the line for the 12V/0V to flow out the negative (-) side? Not sure if these are NO or NC? And as a side note, the diagram in the picture and the label on the SSR itself seems to be backwords? It says +/- and +/- while the diagram says -/+ and -/+?

Addition:

This image shows that they have some resisters in place:

Can anyone tell by those images above what type of resister they are using? Seems to me they are dropping the voltage by that on the arduino board side?

2

The picture you show, uses an SSR (a real SSR that controls AC.... The DC S.R.R. in not what we understand as an SSR)
The resistors are connected to the onboard transistors.
They are there to minimize current from controlling I/O-pin. The transistor helps driving enough current to SSRs optocoupler.
The board shown is AC.

Those single DC-parts is probably just transistors+some additional parts rewrapped into a new package

3

Sorry knut_ny but SSR means Solid State Relay and they can be for both DC ar AC drivers and the one you show is DC. You just need to choose the one you need as they are not alternatives or swappable.
I do not think you can use one of this for the Ground. For DC it is not so critical leaving the ground connected.
Anyway the PCB you show has everything the arduino needs, do not need any more resistor nor any other.
Regards

4

A "DC SSR" is just a MOSFET...

5

Can you output pwm with this DC SSR?