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What is the minimum voltage necessary to operate a light emitting diode?

That will vary with the type (i.e. "color") of the LED: IR LEDs operate at the lowest voltage (1.2V), red LEDs operate at low voltages (1.8V), green LEDs operate at medium voltages (2.5V), blue LEDs operate at high voltages (3.3V), and UV LEDs operate at the highest voltages (4V). Intermediate color LEDs operate at correspondingly intermediate voltage between those given above. The reason an LED cannot produce light below these voltages is it takes more voltage drop to get the energy to produce higher energy photons and the different types of binary semiconductors needed to produce each color/energy of photon result in different junction forward bias voltages.However LEDs are really current operated devices, not voltage operated devices, so they need a series resistor or a current source to limit the current through them. Simply applying a voltage source with the necessary "minimum operating voltage" across an LED will generally destroy it instead of lighting it.


What is the voltage in a 2000 Ford Explorer?

Hi, The normal voltage to have the vehicule to properly operate has to be a minimum of 12.6 volts. When checking the voltage at the battery when the engine is running, except to have about 14.4-14.6 volts.


My car is running bad could it be the coil?

It is possible that it is not producing the voltage necessary to operate vehicle properly


what does led stand for led?

Light Emitting DiodeLight-emitting diode - a semiconductor that glows when a voltage is applied


When voltage regulation will be zero it operate it?

A transformer will operate with a voltage regulation of zero when it is not supplying a load.


When transformer voltage regulation will be zero it operate at?

A transformer will operate with a voltage regulation of zero when it is not supplying a load.


What is the recommended voltage for a dishwasher to operate efficiently?

The recommended voltage for a dishwasher to operate efficiently is typically 120 volts.


What semiconductor diode glows when voltage is applied?

Light Emitting Diode or LED


What is and LED?

Light-emitting diode, a semiconductor diode that glows when a voltage is applied.


What is mean by thresold voltage?

the device oprates on the minimum voltage. in this voltage is called threshold voltage.


What is the voltage range, including 110-240V, that this device can operate within?

This device can operate within a voltage range of 110-240V.


Break down voltage?

The breakdown voltage of an insulator is the minimum voltage that makes it partially conductive electrically. On the other hand, the breakdown voltage in a diode refers to the minimum reverse voltage to cause it to conduct in reverse.