RE: LCD Screen interfering with X10

["Phil Harris" <phil@xxxxxxxxxxx>]

Switch mode PSUs are pretty much universally used in modern day electronics
as they can provide a lot of power for a given size and weight relative to
wirewound transformers which need quite hefty regulation in addition to a
heavy (and expensive) transformer itself.

There is nothing inherently *WRONG* with switch mode PSUs however it seems
that more and more frequently they are banging switching noise back out
onto
the mains - which normally wouldn't cause a problem - but I have a network
switch (NetGear 10/100 16 port) that if I plug it into the mains kills half
my house for X10 (curiously *NOT* local to the switch but the other side of
the house) and I *HAD* a cheap PC PSU that did the same - that got put in
my
Mother In Law's PC a while back when I did her an "upgrade" as
she'll never
need X10 at her house! (I remembered my M.I.L.'s PC because I just had it
back at home to sort out a problem she was having and when I plugged it it
all my X10 started playing up - took me ages before I remembered that it
was
her PSU!!!)

Phil

> -----Original Message-----
> From: anthony.kirrane@xxxxxxx
> [mailto:anthony.kirrane@xxxxxxx]
> Sent: 30 March 2004 13:59
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] LCD Screen interfering with X10
>
> What does switch mode mean?
>
> Another thing to mention is that my logfile shows lots of
> commands received like the following 'A777777777777 on,
> O33333333333 off.  Obviously erroneous.
>
> -----Original Message-----
> From: Phil Harris [mailto:phil@xxxxxxx]
> Sent: 30 March 2004 12:43
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] LCD Screen interfering with X10
>
>
>
> > I use a cheap GNR 15 inch LCD monitor with about 6
> appliance modules
> > in the immediate vicinity without problems. I can operate
> these from
> > both HV and local control via timers.
>
> I think the problem - as we usually find - comes down to
> switch mode PSUs.
> They're absolute buggers for banging out *HUGE* amounts of
> mains noise but an X10 mains filter *SHOULD* cure it - if it
> doesn't then maybe there's a fault with the filter?
>
> Phil
>
>
>
> UK Home Automation Meet 2004 - BOOK NOW!
> http://www.ukha2004.com
>
> http://www.automatedhome.co.uk
>
> Member Offers - http://www.freeranger.co.uk/ukha
Yahoo! Groups Links
>
>
>
>
>
>
>
> ********************************************************************
>
> This email may contain information which is privileged or
> confidential. If you are not the intended recipient of this
> email, please notify the sender immediately and delete it
> without reading, copying, storing, forwarding or disclosing
> its contents to any other person
> Thank you
>
> Check us out at http://www.btsyntegra.com
>
> ********************************************************************
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------ Yahoo! Groups Sponsor
> ---------------------~-->
> Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
> Printer at MyInks.com.  Free s/h on orders $50 or more to the
> US & Canada.
> http://www.c1tracking.com/l.asp?cid=5511
> http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/IBOolB/TM
> --------------------------------------------------------------
> -------~->
>
> UK Home Automation Meet 2004 - BOOK NOW!
> http://www.ukha2004.com
>
> http://www.automatedhome.co.uk
>
> Member Offers - http://www.freeranger.co.uk/ukha
> Yahoo! Groups Links
>
>
>
>
>
>



UK Home Automation Meet 2004 - BOOK NOW!
http://www.ukha2004.com

http://www.automatedhome.co.uk

Member Offers - http://www.freeranger.co.uk/ukha