Using Relays

Archiver

Hi All,

I am a newcomer to Stamps, looking forward to use one on a project.

I'm trying to make a changeover switch to changeover E1 trunks from
one device to another (upon 1st device failing). I need to be able to
change 4 independent pins per trunk from one device to the other.
I've been looking at various modules, but can't really figure out how
I can do this. Any help is much appreciated.

Thanks - C.J.

Archiver

In a message dated 11/16/2003 1:42:05 PM Eastern Standard Time,
cjsierra_2000@y... writes:


> I'm trying to make a changeover switch to changeover E1 trunks from
> one device to another (upon 1st device failing). I need to be able to
> change 4 independent pins per trunk from one device to the other.
> I've been looking at various modules, but can't really figure out how
> I can do this. Any help is much appreciated.
>
>

Use Digikey 255-1002 DPDT relays and drive them with a ULN2803 or a
TPIC6595. Very easy to do.

Sid Weaver
W4EKQ
Port Richey, FL


[noparse][[/noparse]Non-text portions of this message have been removed]

Archiver

Hi CJ,

What's on the pins power, analog or digital?

Nick

--- In basicstamps@yahoogroups.com, "CJ Sierra" <cjsierra_2000@y...>
wrote:
>
>
> Hi All,
>
> I am a newcomer to Stamps, looking forward to use one on a project.
>
> I'm trying to make a changeover switch to changeover E1 trunks from
> one device to another (upon 1st device failing). I need to be able
to
> change 4 independent pins per trunk from one device to the other.
> I've been looking at various modules, but can't really figure out
how
> I can do this. Any help is much appreciated.
>
> Thanks - C.J.