Re: (ET) relays

["RJ Kanary" <rjkanary nauticom net>]

Is the diode 'across' the coil, or in series with the coil?

RJ


----- Original Message ----- 
From: "Tim Humphrey" <hump evgrin com>
To: "ET" <elec-trak cosmos phy tufts edu>
Sent: Thursday, June 14, 2007 7:26 AM
Subject: Re: (ET) relays


> relays will usually have two sets of ratings, one for the coil and one for 
> the contacts.
>
> AFAIK (as far as I know) a relay coil can only work on DC, otherwise it is 
> a buzzer. So a coil rated for 24vac would have a diode integrated in its 
> windings in order to convert the incoming ac into dc. It obviously would 
> work on dc, but you would have to observe polarity.  (I'm thinking I'm 
> about to learn something new; "to me").
>
> Is there any other markings on it to identify it?
>
> --
> Stay Charged!
> Hump
> I-5, Blossvale NY
>
>
> > -----Original Message-----
> > From: elec-trak-bounces cosmos phy tufts edu
> > [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of Neil Dennis
> > Sent: Wednesday, June 13, 2007 6:31 PM
> > To: et
> > Subject: (ET) relays
> >
> > I picked up some  "open" relays that look like the RTN ones on my e12
> > today that are listed as AC with an ohms rating for the coil.  Wonder if
> >
> > they are usable on DC ?
> >
> > wombat
> >
> > _______________________________________________
> > Elec-trak mailing list
> > Elec-trak cosmos phy tufts edu
> > https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>
>
>
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak