Overdriving NO Tubes

"Mort" wrote in message y.com...
Well, I admit I do not know this man very well, but he claims that someone
he knows has a device that measures the light output and he said that
fixture "was clocked at 130watts"

Photographers are using simple device to measure light intensity
in a given point, so there is the way to measure light output
relatively cheap and easy but measuring the light spectrum, which
changes over time and changes when you change tube driving conditions
is not so easy.

If I were you, I would ask your friend about the details of the
measurment process. How exactly he come up with the "was clocked
at 130watts" statement. Did you compared the light output to the
nominaly driven 130W VHO fixture? Or just added wattage of his
balasts he has used? These two are not the same. And I highly
doubt the overdriven NO tube will produce the same amount of light
as VHO tube, so I would bet he just added wattage of balasts.
Which is totaly wrong, because of the nature of the electric current
flowing inside the fluorescent tube when driven by electronic balast.

So anyway... Naturally I have questions about this and that
is why I am here

Sure...