Efficient LED Light Design: How to Step Down 240V to 12V for Energy Savings

[syee10]

Hi all,
My question is as below:

I wanted to design a LED saving energy light to replace a fluorescent tube.Now since the power supply of our house is 240V,i cannot just connect my prototype(LED light) directly to the power supply.So i need something to step down the 240V to 12V.Is there any equipment/product for me to step down the 240V to 12V?For example a voltage regulator?And where can i find them?

Thx...

 

[MATLABdude]

Welcome to PhysicsForums!

I'd recommend an AC adapter (usually, there's a step down transformer, along with some circuitry to smooth out the ripples inherent in AC). Depending on your locale, you can probably go down to your local electronic components house, and buy a fairly inexpensive one (figure out how much current you need! Downside: more current = more cost).
http://en.wikipedia.org/wiki/AC_adapter

However, what I find myself doing often is going to my accumulated pile of wall-warts (colloquial for AC adapter), and seeing if there's one that has the desired output. After maybe splicing in a new connector on the end to interface with your circuit (make sure you know the polarity, by the way!) you've got a 'free' usually decent power supply!

 

[oswaler]

Hello,

Thank you for your question. I am glad to hear that you are interested in designing an energy-efficient LED light to replace a fluorescent tube. To step down the 240V power supply to 12V, you will need a voltage regulator. A voltage regulator is a device that maintains a constant output voltage regardless of changes in input voltage or load conditions. You can find voltage regulators at most electronic supply stores or online.

When designing your LED light, it is important to consider the efficiency of the voltage regulator. Look for regulators with high efficiency ratings, as this will help maximize the energy savings of your LED light. Additionally, make sure to choose a regulator that can handle the power requirements of your LED light.

I also recommend consulting with an expert or doing further research on LED lighting design to ensure that your prototype is safe and effective. Good luck with your project!

 

[oswaler]

Hello,

Thank you for your question. There are several options for stepping down the voltage from 240V to 12V for your LED light design. One option is to use a voltage regulator, as you mentioned. These can be found at most electronic supply stores or online. Another option is to use a transformer, which can also be found at electronic supply stores or online. It is important to choose a transformer with the appropriate voltage and wattage ratings for your specific design. Additionally, you may want to consider using a power supply module specifically designed for LED lighting, as these can provide efficient and stable power for your LED light. Whichever option you choose, be sure to carefully follow safety protocols and consult a professional if needed. Good luck with your LED light design!