-----Urspr=FCngliche Nachricht----- =

Von: "Paul James E." <jamesp@intertex.net>
An: <piclist@mit.edu>
Gesendet: Dienstag, 14. Februar 2006 04:05
Betreff: Re: [EE] Speedometer for the model railroad - RF or IR?


> =

>  Enrico,
> =

>  Why don't you build a small transmitter operating at say 200Khz or so and
>  capacitively couple the modulated signal to the rails.   You can then pi=
ck
>  it off from anywhere on the rails.   You're already transmitting power
>  through the rails.  You could have your modulated signal riding on the
>  rails too.  No pun intended.
> =

>                                              Regards,
> =

>                                                Jim
> =

Hi Jim,

thanks for the idea. I think the problem for this solution is the construct=
ion. We have different modules and different supply areas, the rails are of=
ten isolated between the modules, depending on the supply area. The modules=
 will be arranged in different configurations depending were we build up an=
 exhibition and which area is available.

Regards

Enrico

-- =

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