Comparison of T5HO bulbs - PLEASE READ!!!

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KaliKitsune

KaliKitsune

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Lightguy420 said:
well if you are such a specialist in T5 lighting you would know that you CANNOT run a 39W/HO/T5 lamp on a 54W/HO ballast...
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Have you seen the Icecap ballast? It can drive ANY bulb you attach to it. You can mix and match T5 with T12 bulbs and it doesn't care.

Energy is energy. There is nothing built directly into the bulb itself to restrict power flow, except the very nature of the components that make the bulb. Thus, you *CAN* overdrive it. I'm powering a 7 watt T5 bulb with a 20 watt 9V power supply - it takes it just fine and works, and it's much brighter.

As for shorter bulb life when overdriving - that doesn't happen if you get a ballast that outputs in high frequency ranges, like 10KHz as opposed to 50/60 or 100/120 Hz for standard lighting.
 
KaliKitsune

KaliKitsune

Well-Known Member
Lightguy420 said:
If Lumens don't matter than why can't we all just save money and time and grow under a 60watt A-19... or do you know what that is?
Lumens is a measure of the perceived power of light...
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Since you want to play the Knowledge game - A-19 is a medium-base incandescent bulb, tungsten-carbide filament, highly inefficient, outputs mostly orange light.

Lumens can help in determining the output of other spectra. If you're outputting 5000 lumens, that's green light. To balance that to make cool white, you have to add MORE than what's being output in the green spectrum in the red and blue - in a warm white, less blue, more red.

If you want me to get REALLY technical I'll get into additive and subtractive and multiplicative color blending/rendering, but odds are I'll start using terminology you won't understand without at least 2 years of electrical engineering.
 
U

UserFriendly

New Member
KaliKitsune said:
Since you want to play the Knowledge game - A-19 is a medium-base incandescent bulb, tungsten-carbide filament, highly inefficient, outputs mostly orange light.

Lumens can help in determining the output of other spectra. If you're outputting 5000 lumens, that's green light. To balance that to make cool white, you have to add MORE than what's being output in the green spectrum in the red and blue - in a warm white, less blue, more red.

If you want me to get REALLY technical I'll get into additive and subtractive and multiplicative color blending/rendering, but odds are I'll start using terminology you won't understand without at least 2 years of electrical engineering.
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Man, you gotta stop. You and Tea Tree Oil with your lumen bullshit. What you describe right there is not exact and you have no way to tell exactly what wavelengths are being radiated unless you use the proper equipment. That's just no way to compare lamps bro; give it up.
 
KaliKitsune

KaliKitsune

Well-Known Member
UserFriendly said:
Man, you gotta stop. You and Tea Tree Oil with your lumen bullshit. What you describe right there is not exact and you have no way to tell exactly what wavelengths are being radiated unless you use the proper equipment. That's just no way to compare lamps bro; give it up.
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You can make a spectrometer from a CD and a box with a thin slit and a hole in it to find your wavelengths, it's that simple. You don't need super-special equipment - the CD serves as a perfect diffraction grating, and the thin slit acts as the aperture for the incoming light. The hole is where you get light output, and can project the results onto a piece of paper or project it into a camera for capture and analysis.

http://astro.u-strasbg.fr/~koppen/spectro/nighte.html

http://www.exo.net/~pauld/activities/CDspectrometer/cdspectrometer.html

*shakes head* I swear...
 
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