RE: STEP DOWNs WAS Re: Very Interesting - New US X10 Product

["Kevin Hawkins" <lists@xxxxxxx>]

John - you need to couple the primary and secondary with a suitable
capacitor such that the X10 signals can get from one side of the
transformer
to the other. I can't remember off hand the value of the capacitor I used
but I could probably find out. It was just as stated on the 240V/110V
conversion site that everyone use. (Dr Bennotto or something).  The
capacitors must be suitably voltage rated and of course this involves
actually tapping across the 240V/110V windings so you need to be very
careful. In fact I think I used two capacitors in series as an added safety
step when I did it just in case one went short circuit. (double value). The
devices must be deriving their timing from the mains cycles too (most do as
they usually get this from zero crossing points) or you get a 50Hz / 60 Hz
incompatibility. This is a bit of a kludge but it does work.



Kevin



-----Original Message-----
From: John Andrews [mailto:groups@xxxxxxx]
Sent: 25 July 2003 16:48
To: ukha_d@xxxxxxx
Subject: STEP DOWNs WAS Re: [ukha_d] Very Interesting - New US X10 Product



Gareth

Please can I ask which step down you used? I have not had the same sucess
as
you?

Cheers

J




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