[time-nuts] Hi Power LED Light power supply...

[Ryan Szekeres]

On Tue, Sep 18, 2012 at 2:27 PM, gary <lists at lazygranch.com> wrote:
>
> A similar problem occurs with matrixed LED displays mounted on machinery
> that has vibration. Very common in industrial controls since they like LEDs
> for readability.
>

This is very evident on the new L train cars in Chicago. They have a
multicolor LED sign for listing the train destination. For me at least
the signs are unreadable when I try to read them from another moving
train and hard to read from a platform when the structure vibrates.


-- 
Ryan Szekeres
KB9TQN