UVC TUBE +PSU

UVC Tube + PSU, retail $N/A
Manufactured by (Unknown)
Last updated 08-20-09






This is a UVC (ultraviolet-C), fluorescent tube and tiny high-voltage PSU (power supply unit).

They came to me mounted on a piece of white paperboard (such as the type that packing boxes are made from).


SIZE



To use this UVC tube with PSU, feed it any source of 3.0 to 5.0 volts DC that can sink at least 200mA (0.20A); connecting it as such that the polarity markings (+) and (-) are observed.

If you wish to have a power switch, you'll need to procure & wire it in yourself, as one is not furnished.

***YOU MUST NOT*** look directly at the fluorescent tube; although most prescription eyeglasses will block a significant portion of UVC radiation, I cannot guarantee that this will be the case.


The other significant warning I have here is that power supply: Despite its diminutive size, it really packs a whallop. A 1,600 VOLTS wallop!!!
It will do more than just "bite" like a capacitor in an unplugged TV might do; this little baby can KILL if you're careless!!!

You've no doubt heard the phrase "Raid kills bugs dead" before.
Well, "this power supply kills YOU dead!" if you aren't careful!!!




There are no batteries to change or recharge here, so I do not have to tell you which part to remove, huck into an open-pit mercury or gadolinium mine, and then rather emphatically tell you not to.

Just connect it to a source of 3.0 to 5.0 volts DC that can sink at least 200mA (0.20A) as directed above.

Current usage measures 192mA at a loaded forward voltage of +3.80 volts



The UVC Tube & PSU is meant to be installed in something else; it was not designed as a flashlight meant to be carried around, thrashed, trashed, and abused, so I won't try to drown it in the toliet tank, bash it against a steel rod or against the concrete floor of a patio, let my housemate's citty kats go to the litterbox on it, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, use a large claw hammer in order to smash it open to check it for candiosity, fire it from the cannoņata (I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piņata Central), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; and the cannoņata (also located at Piņata Central) is only used to shoot piņatas to piņata parties away from picturesque Piņata Island), send it to the Daystrom Institute for additional analysis, or perform other indecencies on it that a flashlight might have to have performed on it. So this section of the web page will be significantly more bare than this section of the web page on a page about a flashlight.

In fact, the photograph and spectrographic analyses below may be pretty much it.

The main "disinfecting" component here is the ultraviolet-C wavelength comprising mainly of the mercury line at 253.7nm.
A small amount of "vacuum UV" (wavelengths shorter than ~200nm) is produced; this is evident for the following reason:
A faint odour of ozone (O3) is evident near the bulb when the unit is in operation.

Because UVC and some "vacuum UV" wavelengths are produced, there's a fairly high likelihood that the tube envelope is made of quartz, rather than regular "light bulb glass". This is because the glass used in making light bulbs blocks virtually ***ALL*** UVC and ***ALL*** "vacuum UV" wavelengths; and since these wavelengths are allowed to pass (well, they SHOULD considering that this is a germicidal lamp!!!), I'm fairly certain that the tube material is something other than "light bulb glass".



Photograph of the unit operating.

This photograph depicts the light as being *SIGNIFICANTLY* brighter and more
greenish than it actually is. I do not have any instruments capable of measuring
radiation at wavelengths this short.


Spectrographic plot
Spectrographic analysis of this UVC CCFT.


Spectrographic plot
Same as above; spectrometer's response band narrowed to a range of 250nm to 260nm to show the 253.7nm mercury line.


Spectrographic plot
Same as above; spectrometer's response band narrowed to a range of 179nm to 384nm and deliberately "overexposed" to show alternate UV spectral lines.
USB2000 spectrometer graciously donated by P.L.








TEST NOTES:
Test unit (UVC tube + power supply plus a spare UVC fluoro tube) was furnished to me by a website fan, and was received on the afternoon of 04-11-09.


UPDATE: 08-17-09
According to the person who furnished this, the tube itself is part number "BF850-UVC" from JKL Components.


UPDATE: 08-20-09
The spec sheet for the inverter (power supply) can be found on the Mouser Electronics website at www.mouser.com/catalog/specsheets/BXA-502.pdf.
This is .PDF file; you'll need Adobe Acrobat or other PDF reader in order to view it.








    MANUFACTURER: Unknown
    PRODUCT TYPE: UVC tube and power supply unit
    LAMP TYPE: Linear UVC fluoro tube
    No. OF LAMPS: 1
    BEAM TYPE: Broad flood
    SWITCH TYPE: None
    CASE MATERIAL: None
    BEZEL: None
    BATTERY: N/A (uses +3 volts to +5 volts)
    CURRENT CONSUMPTION: 192mA at 3.80 volts
    WATER RESISTANT: No
    SUBMERSIBLE: NO WAY HOZAY!!!
    ACCESSORIES: None
    WARRANTY: Unknown/not stated

    PRODUCT RATING:

    Product is not meant to be sold as-is, so a conventional "star" rating will not be furnished.





UVC Tube & PSU *






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