jonnyGURU Forums
Home Site Search Reviews Articles Contest Links PSU FAQs  

Go Back   jonnyGURU Forums > General Electronics > Electronic Component Discussion

Electronic Component Discussion Discussion of anything pertaining to electronics and the components that make them work

Thread Tools Display Modes
Old 02-16-2012
cineo cineo is offline
micro ATX User
Join Date: Feb 2012
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default noob here, looking for a solution!

Hello all! Names Chris.. here is my poblem. But before I do I must say that I cannot disclose what the device is called or what its going to be used for.. ok here it goes... My power source ranges from 4v to 12v, I need to power a light source... In between the power source and light source i need a dial to regulate the volts that get to the light.. so if my power source is say 6v I need the dial to be able to turn down the volts to say the lowest setting which will be 4v which will dim my light... Can anyone help?
Reply With Quote
Old 02-18-2012
allikat allikat is offline
Flux Capacitor User
Join Date: Jun 2010
Location: England
Posts: 572
Thanks: 22
Thanked 16 Times in 13 Posts

The easy way is a variable resistor. The high tech way would involve VRMs or pulsing the LED to provide a dimmer light.
Intel i7-2600k with an XSPC Raystorm water block, 4x4GB Corsair Dominator, SLi Evga-GTX560Ti-448 FTWs, Asrock Extreme4 Gen3, Crucial M4 256GB SSD, Samsung Spinpoint F3 1TB HDD, powered by a Silverstone Strider+ 850 PSU in a Silverstone TJ-07BW case.
I'm not buying EK GPU blocks ever again. (One GPU killed)
Reply With Quote
Old 02-18-2012
Shadowww Shadowww is offline
1kW User
Join Date: Sep 2011
Posts: 192
Thanks: 2
Thanked 0 Times in 0 Posts

Is light a LED or incan light?

LED: you'll need a LED driver with PWM support. - these guys for example have some nice drivers, which go up to 6 amps (enough to drive a Luminus SST-90 or something like that)

Incan: any DC-DC step-down converter will do (make sure it's output current capability doesn't exceeds your needs).
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 01:43 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright © 2000 -