How to use a solid state relay?

Hi,

What I'm trying to do is build a circuit from my computer, where I
have a controller card I've built that can raise signals, to the wall
sockets, lights, etc. I want to be able to turn on and off the power
to the sockets, etc. by raising a signal on the computer. What I want
to do is run twisted pair wire through the walls and control it via
that.

I've done a bit of research and I think I can use a solid state relay
like jameco part number 164988 for this. Do I just put it in series
with the A/C current? And run the twisted pair to the input voltage
leads?

I'd also like it to default _on_ if the computer is yanked out of the
wall or something, not necessary but a big plus (it would be nice to
have electricity if the computer breaks).

Any feedback would be greatly appreciated. I don't feel like burning
down my house.

Thanks,

Greg

Gregory R. Ball <(E-Mail Removed)> wrote:
> Hi,
>
> What I'm trying to do is build a circuit from my computer, where I
> have a controller card I've built that can raise signals, to the wall
> sockets, lights, etc. I want to be able to turn on and off the power
> to the sockets, etc. by raising a signal on the computer. What I want
> to do is run twisted pair wire through the walls and control it via
> that.
>
> I've done a bit of research and I think I can use a solid state relay
> like jameco part number 164988 for this. Do I just put it in series
> with the A/C current? And run the twisted pair to the input voltage
> leads?

Assuming it's a standard relay, yes.
>
> I'd also like it to default _on_ if the computer is yanked out of the
> wall or something, not necessary but a big plus (it would be nice to
> have electricity if the computer breaks).

Normally open relays are more common than normally-closed ones.

Gregory R. Ball wrote:

> Hi,
>
> What I'm trying to do is build a circuit from my computer, where I
> have a controller card I've built that can raise signals, to the wall
> sockets, lights, etc. I want to be able to turn on and off the power
> to the sockets, etc. by raising a signal on the computer. What I want
> to do is run twisted pair wire through the walls and control it via
> that.
>
> I've done a bit of research and I think I can use a solid state relay
> like jameco part number 164988 for this. Do I just put it in series
> with the A/C current? And run the twisted pair to the input voltage
> leads?
>
> I'd also like it to default _on_ if the computer is yanked out of the
> wall or something, not necessary but a big plus (it would be nice to
> have electricity if the computer breaks).
>
> Any feedback would be greatly appreciated. I don't feel like burning
> down my house.
>
> Thanks,
>
> Greg

Greg,

Have you considered using X-10 controllers for the lights and such? You
can buy an interface for your PC to generate the control signals to
control these devices.

If you want direct control. Use solid-state relay that have logic level
inputs and connect them to a spare printer port. Turn individual port
bits on and off with software in the PC. Mount the relay as close to
the lamp, socket whatever, then you only need to run low voltage (5v)
wiring to them.
--
Luhan Monat
"LuhanKnows" At 'Yahoo' dot 'Com'
http://members.cox.net/berniekm