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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Thank u Audioguru got it.. 3.3 V i was calculating all the while for 3.8V
I plan to use the 4 pin led packages too but they work at 30mA (https://www.electro-tech-online.com/custompdfs/2012/09/9263.pdf)
Any idea what led driver to use? i want the driver to have PWM..
@ Audioguru.. sorry seems i forgot the basics..
2 leds 3.8V drop across each of them in series.. so that is 2*3.8V = 7.6V adding 2V for the current limiting resistor we get 9.6V..
As you specified earlier i will need a battery which will give out enough to keep the leds at full glow even at its...
@Audioguru Here is what i calculated...
Parameters:
Input Voltage from battery 12.6 V
LED forward voltage 3.8V (max)
LED forward current 30mA
Number of leds in array 36..
Solution:
3 leds in series... and 12 of these in parallel to have 36 leds per panel.
So that should be 360mA from the...
@ Audio Guru Yes Sir.. 11.1V 3 cell Li-po battery.. sorry to ask this but would 2000mAh do? or do i get 5600mAh ? And yes will make sure all the precautions and safety systems mentioned are present.
@ Ronv.. Sir I understand and I will go for Li-po and yes they have a 3.3- 3.8 V forward and...
@ Audioguru - I have found a local shop here which sells batteries and chargers with protection.. could you advise me on what batteries i should pick up? He can custom make my batteries too..! So what Li polymer battery voltage and amp do i pick up for here?
@ronv- I dont want to use lead acid...
Hey Audioguru, thanks for the reply!!
I can get the required parts in India or I can get them shipped so it wont be a problem...
Secondly I was thinking that if the BL-5C batteries are gonna be a pain then i can get...
Hey Guys,
Need your help and advice!
I am trying to make an led emergency lighting system. This is completely disconnected from the regular wiring circuit at my house.
I live in India and have been having a few issues with the electricity supply! More demand less supply not enough...
Hi All,
I am a newbie to electronics... been trying to build and learn.
Here is my idea/ question/ problem:
I recently purchased 7 meters (5m + 2m) of led strip (blue color) which works on 220v.
The strip came with a seperate wall plug which was a 2 pronged for the Indian subcontinent...
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