LED Indicators for Activa - Page 4 - xBhp.com : The Global Indian Biking Community

sandeepcf · 10-01-2011, 11:40 AM

I am looking for a robust voltage regulator idea to drop the 14.1v to 3.6v without much power drop. LM317, 7805 IC's can be used but there is too much power wastage which negates the idea of power saving with LED's.

what are the ways to regulate the voltage in an efficient way? Switching regulators????? Janesh???????

deville_56 · 10-02-2011, 10:21 PM

Quote:

Originally Posted by sandeepcf

I am looking for a robust voltage regulator idea to drop the 14.1v to 3.6v without much power drop. LM317, 7805 IC's can be used but there is too much power wastage which negates the idea of power saving with LED's.

what are the ways to regulate the voltage in an efficient way? Switching regulators????? Janesh???????

Why voltage conversions? Just serialing them would save resources

Janesh.J · 10-03-2011, 03:41 PM

Quote:

Originally Posted by sandeepcf

I am looking for a robust voltage regulator idea to drop the 14.1v to 3.6v without much power drop. LM317, 7805 IC's can be used but there is too much power wastage which negates the idea of power saving with LED's.

what are the ways to regulate the voltage in an efficient way? Switching regulators????? Janesh???????

Hi Sandeep,

You can use a regulator LM1117-3.3 if u need a 3.3 volt regulation. It has a current capacity of upto 800mA.
As for your requirement, i am sorry i have not researched much as the voltage specifications are very specific.
Yes you can try switching regulators, but they are costly and circuit is complex.

Abhijeet Bhattacharjee · 10-05-2011, 06:15 PM

Janesh bhai, what's the forward voltage for white LED???

itssaurabh.negi · 11-10-2011, 02:18 PM

hi guys, i read ur post about LED indicators as well as googled about the same, i have built the circuit with IC 555 but without relay.

I thought LED will blink if connectred to the output of Pin No 3. But i am getting a constant voltage of 1.7V all the time, wat may be wrong ??
components i m using :
50K ohm resistors
5 Kohm resistors
10 micro farad 60 Volt capacitor can this be the cause??

but i am not using 0.01 mic farad capacitor between Pin 5,is that necessary??

AFAIK O/P from 555 wont be sufficint to glow all LEDS brighter enough thats why using a RELAY .

please suggest regarding this.

11-10-2011, 02:18 PM	#35 (permalink)
itssaurabh.negi SEE BEE JEE :) Join Date: Jun 2011 Location: Dehradun Posts: 566	hi guys, i read ur post about LED indicators as well as googled about the same, i have built the circuit with IC 555 but without relay. I thought LED will blink if connectred to the output of Pin No 3. But i am getting a constant voltage of 1.7V all the time, wat may be wrong ?? components i m using : 50K ohm resistors 5 Kohm resistors 10 micro farad 60 Volt capacitor can this be the cause?? but i am not using 0.01 mic farad capacitor between Pin 5,is that necessary?? AFAIK O/P from 555 wont be sufficint to glow all LEDS brighter enough thats why using a RELAY . please suggest regarding this. __________________ _______________________________________________ I Dream, I Dare, I Do !! << 100Rabh N3gi!! >> My Ride : http://www.xbhp.com/talkies/members/itssaurabh-negi-albums-my-new-sweetheart.html Gangotri Ride: https://www.facebook.com/media/set/?...0730086&type=3

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10-01-2011, 11:40 AM	#31 (permalink)
sandeepcf Senior Member Join Date: Dec 2009 Posts: 154	I am looking for a robust voltage regulator idea to drop the 14.1v to 3.6v without much power drop. LM317, 7805 IC's can be used but there is too much power wastage which negates the idea of power saving with LED's. what are the ways to regulate the voltage in an efficient way? Switching regulators????? Janesh???????

10-05-2011, 06:15 PM	#34 (permalink)
Abhijeet Bhattacharjee KrazzyKid Join Date: Jun 2009 Location: Kolkata, WB Posts: 233	Janesh bhai, what's the forward voltage for white LED???

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