CES LED Tester, retail $19.95 (www.hosfelt.com)
Manufactured by (Unknown)
Last updated 04-01-10

VERY IMPORTANT: Since this is not a light-emitting product, my standard review format will not be used on this web page.

I've had this for quite a few years now, that's why it does not look brand spanken new in the above photograph!!!

The CES LED Tester (hereinafter just called an LED tester or a tester) is exactly that: an LED tester.

It can be used to test LEDs that require 2mA, 5mA, 10mA, 20mA, 30mA, and 50mA. This would make it useful for testing 3mm (T1) and 5mm (T1 3/4) LEDs, plus those pesky 3 leaded bi/tri-color LEDs.

For power, a 9 volt transistor radio battery inside the unit does the job.

 Size of product w/hand to show scale SIZE

To use the tester, just insert the LED into the sockets with the anode (+) positive lead being toward the top, in the slots where the current in mA is where you want it (this will usually be 20mA for 3mm, 5mm, 8mm, 10mm, bicolor, and tricolor LEDs), and press & hold down the button labelled "TEST" near the right edge of the face of the unit. A yellow-green light positioned to the left of this button and labelled "BATT" should now come on, and so should the LED you're testing if you got its polarity right and the LED being tested is any good.

To change the battery (and yes, it really *IS* a "battery" and not a "cell") when necessary,turn the unit face-down. Unclip & remove the battery door, carry it to a bridge over deep water (the Oakland Bay Bridge would be ideal; however, the Juneau-Douglas Bridge would also do in a pinch here), and throw it over the side so that it goes "blub blub blub" all the way to the bottom of Gastineau Channel with all of the bowling balls that were lobbed over that bridge in the 1950s and 1960s...O WAIT!!! THAT'S THE GOOD PART!!! So just set it aside instead.

Unclip the used up old 9 volt battery from the battery snap, and dispose of or recycle it as you see fit.

Snap a new 9 volt transistor radio battery onto the battery snap, orienting it so that it's larger terminal goes onto the smaller metal piece of the battery snap, and vice versa.

Place the now-connected battery into the compartment, and clip the battery door back on.
Aren't you glad that you didn't throw that battery doo over the side of the Juneau-Douglas Bridge now?

This is what the Juneau-Douglas Bridge looks like...or what it lookED like anyway before it was replaced in 1976.

And this is what the bridge looks like now.

This is a test instrument, not a flashlight meant to be thrashed, trashed, and abused. So I won't throw it against the wall, stomp on it, try to drown it in the toliet bowl or the cistern, run over it, swing it against the concrete floor of a porch, use a medium claw hammer in order to bash it open to check it for candiosity, fire it from the cannoņata, drop it down the top of Mt. Erupto (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; the cannoņata (also located at Piņata Central) is only used to shoot piņatas to piņata parties away from picturesque Piņata Island, and Mt. Erupto is an active volcano on Piņata Island {In the episode "Les Saves the Day...Again", Paulie Preztail says "Hey, ever wonder why this park's called 'Mount Erupto' anyway?", then Franklin Fizzlybear says "I think its an old native term. Means 'very safe.'"}), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that flashlights may have inflicted upon them.

Therefore, this web page about the CES LED Tester will appear significantly more bare than a web page about a flashlight.

Current output on the 20mA scale is higher than expected, at ~25.0mA.
This is what nocked so many stars off its rating.

The LED tester showing that a violet LED is indeed good.

Spectrographic analysis
Spectrographic analysis of the LED in this product.

USB2000 spectrometer graciously donated by P.L.

YourTube video showing how the tester might typically be used.

This clip is approximately 3.1578679032 megabytes (3,228,884 bytes) in length; dial-up users please be aware.
It will take no less than sixteen minutes to load at 48.0Kbps.

Test unit was purchased (I believe) from the Hosfelt Electronics catalogue sometime in 2000.

It is not known where this tester was made.
A product's country of origin really does matter to some people, which is why I wanted to publish it on this web page.

UPDATE: 00-00-00

    PRODUCT TYPE: LED tester
    No. OF LAMPS: N/A
    SWITCH TYPE: Pushbutton momentary on/off
    BEZEL: N/A
    BATTERY: 9 volt rectangular transistor radio battery
    ACCESSORIES: Battery
    WARRANTY: Unknown/TBA


    Star Rating

CES LED Tester *

Do you manufacture or sell an LED flashlight, task light, utility light, or module of some kind? Want to see it tested by a real person, under real working conditions? Do you then want to see how your light did? If you have a sample available for this type of real-world, real-time testing, please contact me at ledmuseum@gmail.com.

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WHITE 5500-6500K InGaN+phosphor 
ULTRAVIOLET 370-390nm GaN 
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