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Light Module Electrical Test Plan
Course: P 08427, Fall 2009School: RIT
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LED P08427 Lighting Technologies for a Sustainable Lighting Solution in Developing Nations Test Plan Light Module Electrical Test Plan Test Objective: Verify that LED in Lighting Module circuit is being driven at a constant no more than 1A. Also verify that at different values of Rpot the LED is brighter/ dimmer. Equipment Needed: Breadboard Circuit components needed to construct lighting module circuit...
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LED P08427 Lighting Technologies for a Sustainable Lighting Solution in Developing Nations Test Plan
Light Module Electrical Test Plan
Test Objective:
Verify that LED in Lighting Module circuit is being driven at a constant no more than 1A. Also verify that at different values of Rpot the LED is brighter/ dimmer.
Equipment Needed:
Breadboard Circuit components needed to construct lighting module circuit (including resistors ranging from 10k50K, and extra 1K resistor) Connecting wire DMM (DigitalMultiMeter) LUX Meter DC Power Supply
Materials Needed:
Data sheet for Linear Technology LT3474 Lighting Module Electrical Schematic
Test Procedure:
1. Construct circuit as shown on schematic 2. Setup power supply to deliver 4.8V (Vin) Insert 3. first resistor value of Rpot, where Rpot is shown on schematic 4. Measure LUX coming off of LED 5. Turn power supply off, and replace LED with 1K Resistor 6. Measure Voltage across the 1K resistor, to obtain current (using Ohm's Law) 7. Repeat for all desired Rpot resistance values.
P08427 LED Lighting Technologies for a Sustainable Lighting Solution in Developing Nations Test Plan
Test Date: Observations:
Rpot (Ohms) Light Inten...
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