Hi sifu,
I have been goggling whether hv to use parallel or series but some of the website said : never assemble led in parallel circuit
And I wonder why? Parallel isn't much more safer ? But drain more electricity right? Cost more higher...
In series how if one led burst..? But cheaper...
So I wonder whether is series better or parallel

Led more than 50...(blue and purple) guessing 25 purple and 25 blue
But calculation are messy...
Can any sifu teach me how to calculate those led things?

Led-25 b 25p
Power-battery (if cnt do perhaps ac power source? )

do give LED volt spec? and also what power source you plan to use?
so sifu here can help to calculate it


info:

http://www.csgnetwork.com/ledsingresistancecalc.html

http://led.linear1.org/led.wiz

http://www.ohmslawcalculator.com/led_resistor_calculator.php

http://www.instructables.com/answers/How-d...D-power-supply/

http://www.ehow.com/how_6455710_calculate-led-power.html

This post has been edited by joefbi: Sep 11 2013, 12:13 PM

Is this a computer question?

Blue 3.5v
Purple 3.4v
Power source perhaps 9v battery? Or 12V?

parallel,if series,the brightness won't be even...and don't chain all 50 together,divide it to 10 each..coz per LED consume 10~20mA if i have not mistaken.use PSU instead of battery

This post has been edited by quadcube: Sep 12 2013, 10:19 PM

Depends on on the purpose of the device. LEDs can be wired/connected in series and/or parallel. What type of device is this? Can try asking here also: Lifestyle -> Hobbies, Collectibles and Model Kits -> Electronics Enthusiasts Club, All elect/robotics lovers! pls come! (Hobbies)...