0
You can test it by puting it in forward bias with a resistor. Use a dc voltage source of 5 volts and put it in series with 250 Ohms resistor. Or use 9volts with a 450 Ohms resistor. Basically you need 20mA of forward current usually. Smaller current will reduce brightness.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoWhen you test led light, you should know what's relevant parameters you will test? Such as lumen, color temperature, distribution intensity curve, IES file, EMC/EMI test and so on. By the way, you should prepare the suitable instruments to match your led lights, with more, you should know some relevant internation standards, because your test should meet relevant standards. If you want know more about this, you can reference here: http://blog.lisungroup.com
Wiki User
∙ 7y agoTo test an ordinary semiconductor diode use a multimeter to verify that it conducts in one direction but not in the other.
Testing of other types of diodes (e.g. zener diode, tunnel diode, gunn diode, Peltier heat pump diode, photodiode, PIN diode, varactor diode, light emitting diode, LASER diode, vacuum tube diode) is more complicated and often requires special test equipment unique to that type of diode.
Add your answer:
Earn +20 pts
LED stands for Light-Emitting?
LED stands for Light-Emitting Diode.
What is a photodiac?
a bidirectional light-sensitive avalanche diode
Which fiber-optic media type uses light-emitting diodes LEDs instead of lasers?
Multimode fiber (MMF.
What is the most common type of computer monitor?
If the question is "Are the most common flat-panel technologies used for computer monitors?" then yes, they are. If the question is "WHAT are the most common flat-panel technologies used for computer monitors?" then the question is as follows: 1. Liquid Crystal Display monitors are the most common form still. (LCD) 2. Light Emitting Diode Displays are becmoing more popular. They have a more vibrant display, are thinner, but suffer their own problems. (LED) 3. Organic Light Emitting Diode Displays are just on the horizon. These use organic chemical reagents "printed" onto a thin surface in order to display images. Each pixel emits its own light, so there's no need for a back light. This makes these screens far thinner than anything else, and opens up the gateway to having screens that can be bent.
Why ordinary silicon diode does not emit light?
The energy band gap between the cathode and anode is too small to generate photons of higher energy than far IR.Silicon is opaque to visible light (and even IR).
What does LED stand for in LED lights?
Light Emitting Diode - LED
What is an L.E.D?
Light Emitting Diode Light Emitting Diode The acronym LED is short for a light-emitting diode.
Is a light emitting diode called a light emitting diode if its not on?
YES
what does led stand for led?
Light Emitting DiodeLight-emitting diode - a semiconductor that glows when a voltage is applied
LED stands for Light-Emitting?
LED stands for Light-Emitting Diode.
What meaning led?
light emitting diode and its a diode that emitting the light when the current passes through it and it used in the TV screen
Is LED stands for liquid emitting diode?
No. Light Emitting Diode
What is expansion of LED?
Light Emitting Diode
What do you mean by damage of a diode?
A light Emitting Diode.... Light Resistat Diode ...
Is Light Emitting Diode conduct in both direction?
A light emitting diode does not conduct in both directions.
Which is better light emitting diode or laser diode?
Laser diode
What is mean LED?
light emitting diode and its a diode that emitting the light when the current passes through it and it used in the TV screen
