Re: Buzzing relays? Anyone help?

["John Nye" <lists@xxxxxxxxxx>]

Hi,

This thread is really too technical for me but it rang a bell!

I have some LED's in the en suite that I was trying to turn on and off via
x10 and motion detection.When I connected the LED bits via an Appliance
module they still glowed even when off (WAF factor nil).

Now they are connected via a TM12U that doesn't leak any current (so I was
told) and it works fine.

Could this be the same problem?

John
----- Original Message -----
From: "LeeUKHA" <mailinglists@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Saturday, January 22, 2005 3:27 PM
Subject: Re: [ukha_d] Buzzing relays? Anyone help?


>
> Paul Gale wrote:
>
> > I don't think you understood me :)
>
> That's a stong possiblility :)
>
> > Do the relays have double poles i.e. do they have a common,
normally
> > closed and normally open contacts?
>
> Yes, they are a pair double post double throw relay, one for the
central
> heating and one for the hot water.
> When the relays are not activated, the relays default to return
control
> to the (now reductant, but the mother-in-law understands the 1 hour
> boost control) CH programmer in the kitchen. That way if anything goes
> wrong, SWMBO can still use the CH/HW.
>
> > Or do they only have 2 contacts rather than three (single pole,
single
> > throw)?
> >
> No, definitely DPDT.
>
> > What I'm saying is, if they are like normal double pole single
throw
> > (I think?) relays, You can connect them up so that the 'buzzing'
> > happens when the heating is on rather than off. The heating will
work
> > in exactly the same way as it does now.
>
> Ah, so I would activate the X10 modules to switch OFF the heating??
> But then it would buzz when the heating is on, better as its only on
for
> a few hours a day, but not really fixing the problem...
>
> >
> > Do you have a link to any on-line info for these?
>
> Yup, bought from Maplins (I'm sorry, it was moment of weakness),
"Power
> Relay 240VAC DPDT  Part No.  JG60Q"
>
> >
> > >From what you've said so far, I'm not convinced the buzzing
comes
> > from any form of 'leakage current' - sounds more like the buzzing
> > you'd get when the coil is energised (this has nothing to do with
> > whether the heating is on or off). Of course, I've not seen the
> > relays, so this could all be wrong ;)
> >
> Ah, I had assumed it was the leakage current that was doing it, but
that
> promted me to check. If I remove the Appliance modules from the setup
> and plug the relays direct to the 'trigger mains', there is no buzzing
> at all. So I guess it must be the Appliance Module letting a but of
> juice out (thinking about it I get the same effect on my electric
> blanket - even when the appliance module is off, the indicator lamp on
> the electric blankets controller glows...), just enough to buzz the
> contactor arm...
>
>
>
>
>
> Yahoo! Groups Links
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