I use an off-the-shelf dpdt 10A@240V relay with a 12V coil and turn it
on and off with a bc547 in common emitter. This can be driven by an
arduino pin or any similar TTL level output. You'll want a wall wart
or similar at the relay.
Relay
|--
TTL-/\/\---|< ^ <- diode
|-+
=
It's been happily click-clacking for years. They are more efficient
than most solid state relays, and vastly more robust. I also use
KIS-3whatevers as remotely controlled low voltage high current sources
by driving their enable pin. At $.20 each, they are by far the
cheapest controlled source.
njh
On Sat, Dec 08, 2012 at 01:32:15PM -0500, Gregg Levine wrote:
> On Sat, Dec 8, 2012 at 1:22 PM, Colin Law <[email protected]> wrote:
> > On 8 December 2012 17:15, Todd Turner <[email protected]> wrote:
> >> This product would work in combination with a 1wire I/O part ds2406
> >>
> >> //www.adafruit.com/products/268
> >
> > That is an interesting product certainly. It doesn't quite meet my
> > needs as the power here (UK) is 220V whereas that is rated at 120V
> > only. Also we don't use the US plugs of course.
> >
> > Thanks
> >
> > Colin
> >
> >>
> >> Sent from my iPhone
> >>
> >> On Dec 8, 2012, at 3:19 AM, Colin Law <[email protected]> wrote:
> >>
> >> Following a recent thread which provided a number of different ways of
> >> sensing AC power (120/220VAC) I wonder what are the options for AC
> >> power switching via 1-wire. Commercially I have only found devices
> >> such as [1] and [2] which seem rather expensive. I just want a single
> >> relay (or SSR) output.
> >>
> >> Colin
> >>
> >> [1]
> >> http://www.homechip.com/catalog/product_info.php?cPath=27&products_id=181
> >> [2]
> >> http://www.hobby-boards.com/store/products/8-Channel-I%7B47%7DO-%288-Relay-Version%29.html
>
> Hello!
> I quite agree. I wanted have someone other then I remark about about
> it. Ideally a universal solution would need to work here. Which is why
> the one from Limor works best here in the US, but sadly not in Europe.
>
> Maker Shed sells the same collection, and probably the same at
> Sparkfun, so I suspect we are all SOL on this one.
> -----
> Gregg C Levine [email protected]
> "This signature fought the Time Wars, time and again."
>
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