NewBie
*Retired*
Opened the package, and found my new Peak 7 LED UV flashlight in a nice retail looking, fancy bubble pack.
Didn't bother to read the packaging or anything, dove right for the light. Turned the head, ooh, nice, first light! The outside looked nice, noticed the flatop diamond knurling, and set it down. Wow, it doesn't roll off the table. Nice, it just sits there. This is due to the six flats on the head, that are just a tad larger than the body, as others have mentioned. The HA finish looked great.
Opened it up. The head just oozes quality construction, with a nice smoothly potted module and a beautiful gold battery post. The insides are Alodined (conversion coated) to prevent corrosion, classy.
Spent most of the day with me at work, used it to inspect a few things, and passed it around to my co-workers who liked it alot.
Filled up the bathroom sink, let it run in there for an hour, no water inside the flashlight, good.
I was very happy to see that Peak was not thrashing the LEDs (high current-leads to rapid LED output efficiency drop). Especially UV, as this will lead to alot longer lifetime (lifetime on most UV LEDs isn't the best), and a more sustained output before they degrade over time.
Yes, it has the battery rattle like the old ARCs did, but it is a rather simple thing to fix yourself, and hopefully Peak will address it shortly. Anyone with half a brain can fix it themselves.
At exactly 3.2V in, it draws 250mA from the battery. 3.2V * 250mA = 0.8 Watts in.
Since we don't have actual access to the output, I'll estimate the values. The various sample UV LEDs I have around here need about 3.7V at 30mA each. (see typical current and Vf on similar parts: http://www.bivar.com/pdf/general-info/BivarOpto-UV-LEDs.pdf ) 3.7V * 30mA = 0.111 Watts each. 0.111 Watts * 7 = 0.777 Watts consumed by the LEDs. 0.777 Watts out/ 0.8 Watts in = 97.125 % efficiency.
No idea if this is the actual efficiency, but a properly designed switching regulator, especially at these levels, with the current technology that is on the market, 96-98% is easily achieved.
Personally, the output, workmanship quality, design seems to hit a nice sweetspot, in comparision with price.
Photos:
Photo of spectral image:
Peak 7 LED UV underwater:
Didn't bother to read the packaging or anything, dove right for the light. Turned the head, ooh, nice, first light! The outside looked nice, noticed the flatop diamond knurling, and set it down. Wow, it doesn't roll off the table. Nice, it just sits there. This is due to the six flats on the head, that are just a tad larger than the body, as others have mentioned. The HA finish looked great.
Opened it up. The head just oozes quality construction, with a nice smoothly potted module and a beautiful gold battery post. The insides are Alodined (conversion coated) to prevent corrosion, classy.
Spent most of the day with me at work, used it to inspect a few things, and passed it around to my co-workers who liked it alot.
Filled up the bathroom sink, let it run in there for an hour, no water inside the flashlight, good.
I was very happy to see that Peak was not thrashing the LEDs (high current-leads to rapid LED output efficiency drop). Especially UV, as this will lead to alot longer lifetime (lifetime on most UV LEDs isn't the best), and a more sustained output before they degrade over time.
Yes, it has the battery rattle like the old ARCs did, but it is a rather simple thing to fix yourself, and hopefully Peak will address it shortly. Anyone with half a brain can fix it themselves.
At exactly 3.2V in, it draws 250mA from the battery. 3.2V * 250mA = 0.8 Watts in.
Since we don't have actual access to the output, I'll estimate the values. The various sample UV LEDs I have around here need about 3.7V at 30mA each. (see typical current and Vf on similar parts: http://www.bivar.com/pdf/general-info/BivarOpto-UV-LEDs.pdf ) 3.7V * 30mA = 0.111 Watts each. 0.111 Watts * 7 = 0.777 Watts consumed by the LEDs. 0.777 Watts out/ 0.8 Watts in = 97.125 % efficiency.
No idea if this is the actual efficiency, but a properly designed switching regulator, especially at these levels, with the current technology that is on the market, 96-98% is easily achieved.
Personally, the output, workmanship quality, design seems to hit a nice sweetspot, in comparision with price.
Photos:
Photo of spectral image:
Peak 7 LED UV underwater:
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