Re: How to use X10 to protect a plasma screen?



A 110V relay could easily be wired with a momentary contact button/switch in an
electrical box to do this. Wire the relay so the relay contact closes to turn on
the power to the TV and to the relay coil. Wire the momentary contact switch
across the relay contacts. Pushing the switch will activate the relay, which
will then stay on until power goes away. It will then stay off until power comes
back on, followed by the switch being activated again.

This could be built inside a standard electrical outlet or double outlet box,
depending on the relay and switch size. A standard wall outlet on the box to
plug the TV into, and a cord coming out to plug into the wall. "Outdoor" type
boxes might look better.

The relay and switch would both have to be sized for the load.



<jamesleeshowalter@xxxxxxxxx> wrote in message
news:bee10709-8363-45a3-81e4-e765fad1ea74@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
We live in the Santa Cruz mountains, and the power up there is bad
(overhead lines, trees that fall down, etc.). So we tend to get power
outages, particularly in the winter.

Unfortunately, consumer electronics are not designed with power
outages in mind. Instead, they are often designed to come back on when
power is restored. This is okay in some cases, but very bad in the
case of a plasma TV, because when a static image is displayed on a
plasma TV for a couple of hours, it burns the image into the TV
permanently, destroying it.

We already lost one plasma TV this way!

I want to protect our new TV with a simple device that won?t send
power to the TV until I press a reset button.

The device would have the following states:

* No power in house: no power to TV
* Power in house, reset button not pressed: no power to TV
* Power in house, reset button pressed: power to TV

It?s a very simple device, but I have not been able to find one off
the shelf. All of the X10 power controllers I've seen (and I've called
a number of vendors) restore themselves to their previous state when
powered on, so if they were powering the TV when the power went out,
they'll restore power to the TV when PG&E restores power to the house.

Can someone on this forum help me solve this problem using X10? I can
write software (including assembly code) if that's necessary, but I
would need some guidance about what programmable controller to get,
etc.


.



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