Virtual LED Experiment

This program is a series of videos displaying an LED (to the left) and a photometer reading.

• By dragging the hand across the voltage bar you can increase the voltage.
• By dragging the hand up or down the color bar you can change the color of the LED. (Green, orange, red, yellow, super yellow, and infrared LEDs are shown.)

For each color of LED determine the threshold voltage, the point at which the LED can first be seen, and the maximum voltage, the voltage at which the LED is the brightest.

Click here to start the video.