Nice site for figuring out parameters related to LEDs: HERE
Standard LED voltage drops:
- standard red: 1.7v
- super bright red: 2.2v
- standard green: 2.2v
- high intensity blue: 3.0v-3.5v
- high intensity white: 3.0v-3.5v
LED
- Light Emitting Diode
- based on a semi-conductor
- source of light, kind of a light bulb. But, unlike a light-bulb, an LED does not generate nearly as much heat.
- Red LED only needs about 1.7v. If you try to run a red LED with 5v, it is too much voltage for the LED. So, typically, you introduce a resistor to drop the voltage to the LED to a more acceptable level.
- An LED is an example of a transducer since it can take energy in the form of electricity and convert it into energy in the form of light.
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