RE: ir transmitter some success

["Des Gibbons" <des@xxxxxxx>]

Hi Frank,


I'm guessing here, but I assume linking these designs to a PC rather than
HV
is a trivial matter?

Cheers, Des.

-----Original Message-----
From: Frank Mc Alinden [mailto:armagh@xxxxxxx]
Sent: 02 June 2002 15:36
To: ukha_d@xxxxxxx
Subject: [ukha_d] ir transmitter some success


Hi Andy , Ian + Ian
                           
Had some success today with the 8 zone ir
controller . I decided to bypass the opto connected to incoming ir
signal
>from
two ir leds inserted in the Zone Splitter . Looked at my schematic and
realised it was slightly different to my homebrew circuit. In my
homebrew
unit the driver transistors were connected  common emitter but my
new
circuit was common collector .Re did the driver transistors and tried
again.
Now works with all 8 ir leds in Zone Splitter on all Zones . The range
is
approx 15ft and i monitored the current which was approx  5mA . I set
up my
Hv ports thru the control menu rather than a macro at this stage just
to
confirm my hardware was connected ok. Would still like to use opto
isolation
on the incoming ir ,will order something from rs components. Now must
update
my drawing before i forget.

Frank Mc