[Shop-talk] Two SSRs from one PID controller

[Pat Horne]

If the problem with running them in parallel is the required current, you can always add a transistor to up the available current outside the PID. 

Peace,
Pat

Pat Horne 
We support Habitat for Humanity


On Oct 2, 2020, at 4:45 AM, Jeff Scarbrough <fishplate at gmail.com> wrote:


You can drive one off of the regular output, and another relay off of the Alarm output.  The alarm wouldn't be fancy controlled, but it's not clear what the application is.

> On Thu, Oct 1, 2020 at 7:10 PM <lee at automate-it.com> wrote:
> I want to operate two solid-state relays simultaneously (one for a 110V circuit, the other for 220V) from a single PID. I had thought I would just wire them in parallel from the PID, but a bit of poking around the interwebs suggests otherwise. So I sketched up this drawing for two SSRs in series with a PID. Does this look correct for this situation? Any suggestions appreciated!
> 
> (I'm a chemist, so I understand electron flow and related, but I trust this little Shop Talk community more than I trust my electrical intuition!)
> Thanks!!!
>  Lee
> <0905ec96.png>
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