Re: Re: Hmevision ir transmitter

["Frank Mc Alinden" <armagh@xxxxxxx>]

Need to do a little research but i dont think current would be a problem.
I
think if you use a 12v dc supply to drive the ir emitters (thru
transistors)
you could series say 4 of them and then another  4 in series but the
two
groups (of 4) in parallel with each other .The spec i have here on an ir
led
states the forward voltage at 1.2v which means all eight could be in
series
if a 12v dc supply is used .
Frank Mc
----- Original Message -----
From: "andy_powell_is" <ukha@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Thursday, May 30, 2002 7:55 PM
Subject: [ukha_d] Re: Hmevision ir transmitter


> --- In ukha_d@y..., "Frank Mc Alinden" <armagh@b...>
wrote:
> > Andy
> >         As i understand
it for instance Zone 1 is the lounge room
> so every
> > thing that  can be controlled by ir are connected to Zone 1
hence
> the 8 ir
> > jacks per zone. If this is correct  i would tackle it as
follows. A
> box with
> > 1 input jack from HomeVision and  8 jacks (plus electronics
and led
> status)
> > for the 8 zone outputs .Then  8 individual boxes with 1 in
and 8
> out for
> > zone distribution. Does that make sense.
> > Frank Mc
>
> Yeah,
>
> makes perfect sense - I was thinking about this as Ian suggested
that
> I might run into problems with current etc... plus it would mean
that
> you could expand the number of zones by just adding another
box...ie
> you could start off with two zones and add more as the system
> expanded...
>
> Andy
>
>
>
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