Re: Switching audio via an Ocelot and SECU's

["John W" <Don't_Spam_Me@xxxxxxx>]

Have a look back at that post, I added some info about the relays the SECU
uses - not power relays so I don't think that problem will be an issue?

John W

"Robert Green" <ROBERT_GREEN1963@xxxxxxxxx> wrote in message
news:L_idnSCkx8xhmn3enZ2dnUVZ_vidnZ2d@xxxxxxxxxx
> "John W" <Don't_Spam_Me@xxxxxxx> wrote in message
>
> <stuff snipped>
>
>> You may also recall from previous posts that all of my SECU relays
>> connect
>> to my relay board and are only used to switch these 10a DPST relays.
>> This
>> provides isolation and higher current carrying capacity.
>
> A Candadian in the ADI forum, JC, posted: "Power relays require a minimum
> of
> current through the contacts in order to stay clean. Switching audio will
> eventually oxydize the contacts creating a high resistance path. Unless
> the
> contacts are Gold or bifurcated silver cadmium (yes I know it's no longer
> environmentally safe), the average 10 A contact requires a minimum of
> 100Ma
> at 5V to stay clean."
>
> That's the sort of thing I was also worried about, having been bitten by a
> number of X-10 "gotchas" long after things were in place and issues began
> appearing.   I've just asked him how to avert a "resistance" crisis.  I
> may
> crosspost this thread to an audio group to get some more ideas.
>
> --
> Bobby G.
>
>
>