Electronics > Beginners
LED connection in series
Delludom:
Can I connect 3mm LEDs and 5mm LEDs in a series connection? Thanks in advance for your help
Zero999:
--- Quote from: Delludom on December 10, 2018, 03:21:36 pm ---Can I connect 3mm LEDs and 5mm LEDs in a series connection? Thanks in advance for your help
--- End quote ---
3mm and 5mm are just different LED packages. It's what's inside, which is important.
What's the power supply voltage?
What colour are the LEDs? Do you know their forward voltages?
If the power supply voltage is higher than the sum of the LED forward voltages, then it's fine to connect them in series and the forward current though all of the LEDs will be the same.
Delludom:
Thanks..
I'm giving 220v
I need to connect 33 LEDs of 5mm and 2 LEDs of 3mm.
This is the information I have... I am making this for Christmas :) thank you for your reply :)
ogden:
--- Quote from: Delludom on December 10, 2018, 04:00:21 pm ---Thanks..
I'm giving 220v
I need to connect 33 LEDs of 5mm and 2 LEDs of 3mm.
This is the information I have... I am making this for Christmas :) thank you for your reply :)
--- End quote ---
Best gift for your parents will be you are being still alive. To everybody asking elementary advice regarding 220V build my advice is: don't. Stay away from mains until you are knowledgeable enough. You anyway have not enough time to 1) learn everything needed regarding build and safety 2) do actual build.
james_s:
Just use a power supply. Those "wall wart" types are widely available and inexpensive. They provide a nice safe isolated output from whatever your local mains voltage is.
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