how to make led circuit?

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#1 21672338 13 Sep 2014 09:54

akul gandhi akul gandhi

Anonymous

Post #1
21672338 13 Sep 2014 09:54

Sir,
I want to make 15w , 28w led lamp..how can I make circuit? Please help me...
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#2 21672339 13 Sep 2014 17:28

John Schmitz John Schmitz

Anonymous

Post #2
21672339 13 Sep 2014 17:28

Look at this data sheet, in the back is a schematic for a 25W driver.

"LED Driver()":http://cds.linear.com/docs/en/datasheet/37991f.pdf
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#3 21672340 13 Sep 2014 21:51

akul gandhi akul gandhi

Anonymous

Post #3
21672340 13 Sep 2014 21:51

Thank you sir,
But I want to make 20w led bulb circuit without any transformer and less component circuit...lll thank you sir..
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#4 21672341 14 Sep 2014 06:06

John Schmitz John Schmitz

Anonymous

Post #4
21672341 14 Sep 2014 06:06

What is your power source, AC, DC, voltage?
Do you want the drive to dissipate less power than the LEDs themselves?
Do you want protection for the circuit when the LEDs are disconnected?
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#5 21672342 14 Sep 2014 07:11

akul gandhi akul gandhi

Anonymous

Post #5
21672342 14 Sep 2014 07:11

My source is 230v AC. And I am electrical student. I want to make 20w led bulb or lamp. And i am using min 3v or max 3.6 v , 20mA to 25 mA white LEDs. But I have no any idea how to built transformer less 20 w led bulb circuit . so please suggest me circuit.. And please tell how to calculate value of R1, C1, R1, R2...
Please help me sir....Thank you...
#6 21672343 14 Sep 2014 07:26

John Schmitz John Schmitz

Anonymous

Post #6
21672343 14 Sep 2014 07:26

You will need a transformer so you will either need to buy one or build one.
#7 21672344 18 Sep 2014 07:02

Sudheer Gupta Sudheer Gupta

Anonymous

Post #7
21672344 18 Sep 2014 07:02

Hi!

Once read the following posts to get complete idea about how to make a LED circuit.

"*LED Lights Circuit*(LED lights circuit)":http://www.electronicshub.org/mains-operated-led-light-circuit/

"*LED Lamp Circuit using USB Port*(LED Lamp Circuit using USB Port)":http://www.electronicshub.org/usb-led-lamp-circuit/
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