Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Experiments & Modifications



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 09-12-2007, 08:57 PM #1
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
idiotjohny idiotjohny is offline
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
Default What component do I need to reduce 9v to 2.4v?

Hi,
Using kipkays idea I want to make a laser that can run on a 9v power source from a Mindstorms NXT so that I can make a robot that can pop balloons.

How would I convert the 9v input to a 2.4v Output?


Thanks in advance,
John


idiotjohny is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 09-12-2007, 09:00 PM #2
Class 1M Laser
 
Join Date: Jul 2007
Posts: 220
Rep Power: 11
paper183 is on a distinguished road
paper183 paper183 is offline
Class 1M Laser
 
Join Date: Jul 2007
Posts: 220
Rep Power: 11
paper183 is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

It's not that simple, you have to regulate current (amps) too.
paper183 is offline   Reply With Quote
Old 09-12-2007, 09:04 PM #3
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
idiotjohny idiotjohny is offline
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

instead of just saying that can you help me with what i want to find out?
idiotjohny is offline   Reply With Quote
Old 09-12-2007, 09:07 PM #4
Class 1M Laser
 
Join Date: Jul 2007
Posts: 220
Rep Power: 11
paper183 is on a distinguished road
paper183 paper183 is offline
Class 1M Laser
 
Join Date: Jul 2007
Posts: 220
Rep Power: 11
paper183 is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

You can help yourself by reading the stickies at the top of the page next time http://www.laserpointerforums.com/fo...num=1185701612
paper183 is offline   Reply With Quote
Old 09-12-2007, 09:08 PM #5
Gazoo's Avatar
Class 3B Laser
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Gazoo Gazoo is offline
Class 3B Laser
Gazoo's Avatar
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Default Re: What component do I need to reduce 9v to 2.4v?

Quote:
Originally Posted by idiotjohny
instead of just saying that can you help me with what i want to find out?
Read the stickies in this section of the forum at the very top. Start here:

http://www.laserpointerforums.com/fo...1185701612/0#0

And welcome to the forum..
Gazoo is offline   Reply With Quote
Old 09-12-2007, 09:36 PM #6
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
idiotjohny idiotjohny is offline
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

isn't that for 6v?
idiotjohny is offline   Reply With Quote
Old 09-12-2007, 09:54 PM #7
Gazoo's Avatar
Class 3B Laser
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Gazoo Gazoo is offline
Class 3B Laser
Gazoo's Avatar
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Default Re: What component do I need to reduce 9v to 2.4v?

That circuit was designed for a minimum of 6 volts. It will take up to as much as 30 volts I believe, and still regulate a diode nicely.
Gazoo is offline   Reply With Quote
Old 09-12-2007, 10:03 PM #8
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,428
Rep Power: 15904
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,428
Rep Power: 15904
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: What component do I need to reduce 9v to 2.4v?

It will need cooling at higher voltages though, as it is a linear power source and will convert the excess voltage into heat. At 9 volts / 200 mA it's probably okay for intermittent use, but you should consider a heatsink for continuous operation.
Benm is online now   Reply With Quote
Old 09-13-2007, 08:52 PM #9
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
idiotjohny idiotjohny is offline
Junior Member
 
Join Date: Sep 2007
Posts: 5
Rep Power: 0
idiotjohny is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

that sounds too complicated for me... is there a way to convert 3v from 2AA batteries to 2.4v that is simpler
idiotjohny is offline   Reply With Quote
Old 09-13-2007, 11:45 PM #10
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,428
Rep Power: 15904
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,428
Rep Power: 15904
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: What component do I need to reduce 9v to 2.4v?

What's complicated? Just build DDL's circuit, or the driver i posted in this section and make sure to keep the LM317 or transistor cool by applying a little heatsink.

Current sources don't care about input voltage, as long as they have a place to dump the heat.
Benm is online now   Reply With Quote
Old 09-18-2007, 08:51 PM #11
Class 2 Laser
 
Join Date: Sep 2007
Posts: 415
Rep Power: 11
philguy is on a distinguished road
philguy philguy is offline
Class 2 Laser
 
Join Date: Sep 2007
Posts: 415
Rep Power: 11
philguy is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

Oh crap, that sounds hot!

Think I need to fire up my RCX and get some burning to be done.

I will order 3 senkat-GB-diodes...hopefully if all survive I will have the Predador-Bot with three "lights" in a triangle

philguy is offline   Reply With Quote
Old 09-18-2007, 09:32 PM #12
styropyro's Avatar
Class 4 Laser
 
Join Date: Jun 2007
Location: Carbondale, IL
Posts: 5,259
Rep Power: 2895
styropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond repute
styropyro styropyro is offline
Class 4 Laser
styropyro's Avatar
 
Join Date: Jun 2007
Location: Carbondale, IL
Posts: 5,259
Rep Power: 2895
styropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond reputestyropyro has a reputation beyond repute
Default Re: What component do I need to reduce 9v to 2.4v?

Quote:
Originally Posted by idiotjohny
that sounds too complicated for me... is there a way to convert 3v from 2AA batteries to 2.4v that is simpler
I really suggest building the curcuit in the links members gave to you, but if you want 2.4v from batteries just use rechargables, 2 AA rechargeables will put out 2.4v
__________________

Always protect your seeing balls!
styropyro is offline   Reply With Quote
Old 09-18-2007, 09:42 PM #13
Class 1M Laser
 
Join Date: Sep 2007
Posts: 207
Rep Power: 10
Archane is on a distinguished road
Archane Archane is offline
Class 1M Laser
 
Join Date: Sep 2007
Posts: 207
Rep Power: 10
Archane is on a distinguished road
Default Re: What component do I need to reduce 9v to 2.4v?

You could use 4 AA batteries but you will fly through batteries, 2 CR123's work the best since they can be recharged and take up alot less space thant 4 AA's.
Archane is offline   Reply With Quote
Old 09-18-2007, 09:54 PM #14
Gazoo's Avatar
Class 3B Laser
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Gazoo Gazoo is offline
Class 3B Laser
Gazoo's Avatar
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Default Re: What component do I need to reduce 9v to 2.4v?

4 AA batteries will really not work well with Daedal's circuit..even 4 E2 lithiums would be questionable, as would 2 CR123's.

As you suggest, 2 RCR123's are a decent choice. Since they are rechargeable, the voltage for 2 RCR123's will be 8.4 volts off of the charger, and quickly drop to a comfortable 7.5 volts, and slowly discharge from there.
Gazoo is offline   Reply With Quote
Reply





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
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 06:24 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC