The Godfather talking
You think I am funny guy huh?
Sonsivri
 
Home Contact Us Help Search GoogleTagged Donations Login Register
*
Welcome, Guest. Please login or register.
Did you miss your activation email? 		July 03, 2025, 11:06:31 23:06


Login with username, password and session length


Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > 1,5v 3v dc-dc (white led driver)
Pages: [1]
« previous next »
Print
Author Topic: 1,5v 3v dc-dc (white led driver)  (Read 21509 times)
0 Members and 2 Guests are viewing this topic.
gevv
V.I.P
Active Member
*****
Offline Offline

Posts: 155

Thank You
-Given: 156
-Receive: 534



WWW
« on: February 12, 2008, 06:15:48 18:15 »
Used bobbin pc powersupply -12 or -5v filter













Orjinal circuit belza.cz

Orjinal



my modification



easy circuit schema
Logged
Umarım gelmez ilham perilerimin sonu... ! Modifiye uzmanı web üzerinde 320volt.com ile yaktı mumu....
pasanlaksiri
Junior Member
**
Offline Offline

Posts: 69

Thank You
-Given: 144
-Receive: 59
« Reply #1 on: June 20, 2008, 09:07:10 09:07 »
Woow LED is actually much brighter.
Logged
Visit My Web >> http://pasanmicroprojects.wordpress.com/
Parmin
Hero Member
*****
Offline Offline

Posts: 582

Thank You
-Given: 497
-Receive: 133


Very Wise (and grouchy) Old Man
« Reply #2 on: June 21, 2008, 01:28:16 01:28 »
I have been using this circuit from ELM at http://elm-chan.org



The great thing is it is self regulating so you could use up to 3 LED in series and it still works great.
I wound the transformer on little bobbin toroid.
Logged
If I have said something that offends you, please let me know, so I can say it again later.
hodahel
Active Member
***
Offline Offline

Posts: 103

Thank You
-Given: 189
-Receive: 6

Catch me...
« Reply #3 on: June 21, 2008, 04:32:55 04:32 »
quite interesting...i think same circuit to charge a cellphone using a single 1.5 battery?
Logged
pasanlaksiri
Junior Member
**
Offline Offline

Posts: 69

Thank You
-Given: 144
-Receive: 59
« Reply #4 on: June 21, 2008, 10:00:21 22:00 »
Its actually super bright. I just make it.

Look here http://www.sonsivri.com/forum/index.php?topic=13570.new#new
Logged
Visit My Web >> http://pasanmicroprojects.wordpress.com/
looser
Junior Member
**
Offline Offline

Posts: 40

Thank You
-Given: 23
-Receive: 11
« Reply #5 on: July 05, 2008, 11:05:27 11:05 »
hodahel

you are right. It is the circuit for charging the cellphone batteries. Except the coil; is standart 100uH quarter watt resistor package.
Brightness might be becouse of the roll coil used here.

Regards.
Logged
hodahel
Active Member
***
Offline Offline

Posts: 103

Thank You
-Given: 189
-Receive: 6

Catch me...
« Reply #6 on: July 12, 2008, 03:56:58 03:56 »
hmmmm...how can we boost it to about 5VDC?
Logged
Parmin
Hero Member
*****
Offline Offline

Posts: 582

Thank You
-Given: 497
-Receive: 133


Very Wise (and grouchy) Old Man
« Reply #7 on: July 14, 2008, 12:10:55 00:10 »
its already more than 5v, because to charge cell phone you need at least 5V.
OTOH, you may not get lots of current on these arrangements, so it takes either a hell lot of time or just barely enough to trickle charge.
Logged
If I have said something that offends you, please let me know, so I can say it again later.
Pages: [1]
Print
« previous next »
Jump to:  


DISCLAIMER
WE DONT HOST ANY ILLEGAL FILES ON THE SERVER
USE CONTACT US TO REPORT ILLEGAL FILES
ADMINISTRATORS CANNOT BE HELD RESPONSIBLE FOR USERS POSTS AND LINKS

... Copyright © 2003-2999 Sonsivri.to ...
 Powered by SMF 1.1.18 | SMF © 2006-2009, Simple Machines LLC | HarzeM Dilber MC