Re: Electronics decoding of outputs

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

Hi Mick

        The  3 to 8 decoders im
using is fine to IF you only want an output
to be at a certain state for a brief period  eg transmitting an ir
signal or
recieving an ir signal or triggering the alarm contacts on a video
switcher,(these are all applications im currently using). But as Ian
said
not suitable for fixed output states on several outputs.

Frank Mc
----- Original Message -----
From: "Mick Furlong" <hiltoneltd@xxxxxxx>
To: "UKHA Group" <ukha_d@xxxxxxx>
Sent: Saturday, June 08, 2002 12:55 AM
Subject: [ukha_d] Electronics decoding of outputs


> Ok the same Linux box mentioned in my previous email has 4 outputs
which
are
> relay based potential-free switch contacts. These are rated 1.5A at
230 V
AC
> and 2A at 30VDC.
>
> What I would like to do is to decode these outputs giving me 
additional
> states (something similar to how frank is doing the HV/IR stuff I
guess)
if
> my math holds up I should be able to control 16 relays using
combinations
of
> the 4 signals.
>
> Is it as simple as using a set of logic gates to do this?
>
> Is there a solution on a chip ?
>
> Any other help?
>
> btw I am VERY rusty with my electronics....23 years rusty ....so go
easy
on
> me ;)
>
> Thanks
> Mick
>
>
>
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