RE: Varistors - help

["Paul Gale" <groups@xxxxxxxxxxxxxxxx>]

Frank - should the varistor be placed really close to the coil or does it
not matter too much?

Paul.

> -----Original Message-----
> From: Paul Gale [mailto:groups@xxxxxxx]
> Sent: 18 March 2005 09:13
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Varistors - help
>
>
> Ah, well, I've bought the solenoid from someone else - no tech data.
>
> It's quite small though - about as long as a piece of string ;)
>
> Paul.
>
>
>
> > -----Original Message-----
> > From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
> > Sent: 18 March 2005 09:04
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] Varistors - help
> >
> >
> > > How can I tell if it's hefty or not - by the rating etc?
> >
> > Yep...........Though RS should be able to recommend a varistor
seeing
> your
> > buying the solenoid from them...
> >
> > Frank
> >
> >
> > ----- Original Message -----
> > From: "Paul Gale" <groups@xxxxxxx>
> > To: <ukha_d@xxxxxxx>
> > Sent: Friday, March 18, 2005 7:54 PM
> > Subject: RE: [ukha_d] Varistors - help
> >
> >
> > >
> > > How can I tell if it's hefty or not - by the rating etc?
> > >
> > > Paul.
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
> > > > Sent: 18 March 2005 08:19
> > > > To: ukha_d@xxxxxxx
> > > > Subject: Re: [ukha_d] Varistors - help
> > > >
> > > >
> > > > Hi Paul
> > > >             If the solenoid is quite hefty might need 
to use a
> > industrial
> > > > type suppressor ...got one here its a  MURR Electronics
(25180)
> device
> > 24v
> > > > ac/dc..........used for 24v contactors...would be able
to get
> > something
> > > > similiar from an electrical wholesalers but wont be
cheap.......
> > > >
> > > > HTH
> > > > Frank
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Paul Gale" <groups@xxxxxxx>
> > > > To: <ukha_d@xxxxxxx>
> > > > Sent: Friday, March 18, 2005 6:16 PM
> > > > Subject: RE: [ukha_d] Varistors - help
> > > >
> > > >
> > > > >
> > > > > Well both I think but I'm going to use DC.
> > > > >
> > > > > Paul.
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
> > > > > > Sent: 17 March 2005 22:15
> > > > > > To: ukha_d@xxxxxxx
> > > > > > Subject: Re: [ukha_d] Varistors - help
> > > > > >
> > > > > >
> > > > > > Hi Paul
> > > > > >
> > > > > > > I get the solenoid valve tomorrow. I
guess I just need one
> > between
> > > > the
> > > > > > valve terminals?
> > > > > >
> > > > > > Yep thats correct........is it an ac or dc
valve ????
> > > > > >
> > > > > > Frank
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Paul Gale"
<groups@xxxxxxx>
> > > > > > To: <ukha_d@xxxxxxx>
> > > > > > Sent: Friday, March 18, 2005 9:04 AM
> > > > > > Subject: RE: [ukha_d] Varistors - help
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > Great, thanks - Frank to the rescue
again ;)
> > > > > > >
> > > > > > > I get the solenoid valve tomorrow. I
guess I just need one
> > between
> > > > the
> > > > > > valve terminals?
> > > > > > >
> > > > > > > Paul.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > > -----Original Message-----
> > > > > > > > From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
> > > > > > > > Sent: 17 March 2005 20:40
> > > > > > > > To: ukha_d@xxxxxxx
> > > > > > > > Subject: Re: [ukha_d] Varistors -
help
> > > > > > > >
> > > > > > > >
> > > > > > > > Hi Paul
> > > > > > > >
> > > > > > > > > Another thought - are these
needed on DC circuits, or is
> it
> > just
> > > > AC?
> > > > > > > >
> > > > > > > >  Both ......I use them for relays
etc much better than using
> > > > diodes
> > > > > > for
> > > > > > > > back
> > > > > > > > emf suppression....will post a
little later with hopefully a
> > part
> > > > > > number
> > > > > > > > for
> > > > > > > > you if you cant find anything
suitable..
> > > > > > > > Frank
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > ----- Original Message -----
> > > > > > > > From: "Paul Gale"
<groups@xxxxxxx>
> > > > > > > > To: <ukha_d@xxxxxxx>
> > > > > > > > Sent: Friday, March 18, 2005 3:23
AM
> > > > > > > > Subject: RE: [ukha_d] Varistors -
help
> > > > > > > >
> > > > > > > >
> > > > > > > > >
> > > > > > > > > Another thought - are these
needed on DC circuits, or is
> it
> > just
> > > > AC?
> > > > > > > > >
> > > > > > > > > Paul.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > > -----Original
Message-----
> > > > > > > > > > From: Paul Gale [mailto:groups@xxxxxxx]
> > > > > > > > > > Sent: 17 March 2005 14:36
> > > > > > > > > > To: ukha_d@xxxxxxx
> > > > > > > > > > Subject: [ukha_d]
Varistors - help
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > I'm buying a solenoid
valve (24V) from RS along with a
> > float
> > > > > > switch
> > > > > > to
> > > > > > > > > > control a water level in
a holding tank in the loft -
> for
> > > > water
> > > > > > supply
> > > > > > > > to
> > > > > > > > > > an aquarium downstairs.
> > > > > > > > > >
> > > > > > > > > > I've been recommended to
fit a varistor across the
> > solenoid
> > > > > > terminals
> > > > > > > > and
> > > > > > > > > > float switch terminals.
> > > > > > > > > >
> > > > > > > > > > Can anyone recommend what
type of varistor I should use
> -
> > and
> > > > > > where?
> > > > > > > > > >
> > > > > > > > > > Thanks,
> > > > > > > > > >
> > > > > > > > > > Paul.
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > [Non-text portions of
this message have been removed]
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