Where would the power for the LED side of the opto-coupler come from?

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__________________________________________
David C Brown
43 Bings Road
Whaley Bridge
High Peak                           Phone: 01663 733236
Derbyshire                eMail: dcb.home@gmail.com
SK23 7ND          web: www.bings-knowle.co.uk/dcb
<http://www.jb.man.ac.uk/~dcb>



*Sent from my etch-a-sketch*

On 20 July 2018 at 12:04, Manu Abraham <abraham.manu@gmail.com> wrote:

> A quick suggestion: If you still want to use that module and still want
> the isolation, connect an optocoupler to the control interface, which wil=
l
> give an adequate isolation. Just that you will need to tinker with it.
>
> Cheers,
> Manu
>
>
> On Fri, Jul 20, 2018 at 3:49 PM, David C Brown <dcb.home@gmail.com> wrote=
:
> > Thank you all for your advice.  It is clear that this module is not saf=
e
> > enough to use in the way I envisaged.   I am now tending towards using
> > wireless remote control modules.  Twenty feet of air, even humid air,
> is a
> > damn fine piece of isolation. :-)
> >
> > __________________________________________
> > David C Brown
> > 43 Bings Road
> > Whaley Bridge
> > High Peak                           Phone: 01663 733236
> > Derbyshire                eMail: dcb.home@gmail.com
> > SK23 7ND          web: www.bings-knowle.co.uk/dcb
> > <http://www.jb.man.ac.uk/~dcb>
> >
> >
> >
> > *Sent from my etch-a-sketch*
> >
> > On 20 July 2018 at 08:30, RussellMc <apptechnz@gmail.com> wrote:
> >
> >> That looks good as an example - BUT: any add on solution needs to be
> >> checked to ensure that it fixes the isolation issue and does not have
> >> issues of its own.
> >>
> >> Russell
> >>
> >>
> >>
> >> On 20 July 2018 at 11:22, Allen Mulvey <allen@amulvey.com> wrote:
> >>
> >> > While looking for something else I came across this:
> >> > Enclosed Pre-Wired Relay
> >> > https://www.ebay.com/itm/RIB-Functional-Devices-RIBU2C-Enclo
> >> > sed-Pre-Wired-Relay-120-277VAC-10A/282946266423?epid=3D2261035
> >> > 387&hash=3Ditem41e0e96537%3Ag%3AkTIAAOSwqxRa52aB&_sacat=3D0&_nkw
> >> > =3Denclosed+pre-wired+relay&_from=3DR40&rt=3Dnc&LH_TitleDesc=3D0
> >> >
> >> > Use the 555 module to switch this one as Russell suggests.
> >> >
> >> > Allen
> >> >
> >> --
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