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LED Driver Design and Efficiency Test (Power Factor, Flicker and Heat)

Approx. component budget: Rs. 4,000 - 8,000

Objective

Design and test an LED driver and compare it with a ready-made driver for efficiency, power factor, flicker and temperature rise.

What you will build

A constant-current LED driver (buck or flyback type) for a 10-20 W LED module, with a rectifier, input filter, current sensing, and test points for measuring power factor, efficiency and flicker.

Results you can expect

• Efficiency vs load
• Input power factor and THD
• Flicker percentage from a light sensor
• Driver temperature rise
• Comparison with a commercial driver

What you will learn

Switch-mode drivers, power factor, flicker and LED thermal behaviour, useful for lighting and consumer electronics roles.

Tools and notes

Oscilloscope, power meter, lux meter, Excel. Mains input is involved, so use an isolating transformer for testing, an enclosure and a fuse. Work only with supervision.

Resume points from this project

• Built and tested LED Driver Design and Efficiency Test (Power Factor, Flicker and Heat); objective: design and test an LED driver and compare it with a ready-made driver for efficiency, power factor, flicker and temperature rise.
• Measured and analysed efficiency vs load and input power factor and THD; wrote the report and presented the results in a viva. Add your own numbers: [x].

Replace [x] with your own measured results. Write only what you really did.

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