Re: Varistors - help

["Frank Mc Alinden" <fmcalind@xxxxxxxxxxxxxx>]

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]
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>