Re: IR Emitter for Comfort

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

Hi Dean
If your using a "Stick on Emitter" then very little drive current
is required....i would use something like 1k if your using 12v.......I use
3mm ir leds (not sure on the specs) from my local electronics store here in
Melbourne and make my own stick on emitters  although not as nice as the
Xantech stuff but much cheaper...You could use the Xantech ir emitters if
you wish...

Frank
----- Original Message -----
From: Dean Smith
To: ukha_d@xxxxxxx
Sent: Tuesday, September 09, 2003 9:50 PM
Subject: RE: [ukha_d] IR Emitter for Comfort


Thanks Frank

Do yo have any suggestions for IR Leds + Appropriate Resistors ? Comfort
outputs are 12V.

Thanks

Dean

-----Original Message-----
From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
Sent: 09 September 2003 12:07
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] IR Emitter for Comfort


Hi Dean
I dont *think* the Xantech emitters would have current limiting
resistors built in as the value would depend on the voltage being used on
the transmitter output......

Frank
----- Original Message -----
From: Dean Smith
To: ukha_d@xxxxxxx
Sent: Tuesday, September 09, 2003 8:52 PM
Subject: RE: [ukha_d] IR Emitter for Comfort


Response on the Comfort list was that I needed to make sure any IR Led had
the appropriate current limiting resistor.

Can anyone confirm if the Xantech emitters have the resisitor in the
emitter
or not ?

Thanks

Dean

-----Original Message-----
From: Dean Smith [mailto:ukha@xxxxxxx]
Sent: 07 September 2003 20:03
To: Ukha_D@Yahoogroups. Com
Subject: [ukha_d] IR Emitter for Comfort


The comfort manual suggests I can simply add an IR LED to a comfort ouput
to
allow comfort to transmit pre-learnt IR codes.

Anyone done this and comment how well it works and/or got a Farnell/Maplin
part no for a suitable LED.

Can I just use one of the emitters available for Xantech etc. (like these
>from
http://www.letsautomate.com/10063.cfm

The application I have in mind would only need to operate 1 device in
node0 - so no need for high power blasters or anything.

Deano



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