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 12-30-2007, 12:47 AM #1
Junior Member
 
Join Date: Aug 2007
Posts: 3
Rep Power: 0
tiny28 is on a distinguished road
tiny28 tiny28 is offline
Junior Member
 
Join Date: Aug 2007
Posts: 3
Rep Power: 0
tiny28 is on a distinguished road
Default 9v blocking oscillator laser supply?

Hey guys, was wondering if the circuit here would be suitable for powering a blue diode from a 9v battery.

quantsuff.com/LED3.htm

I'm no electrical engineer but it seems like this may be usable, and it is pretty efficient as well, probably more so than a 317 based supply. * The current can be adjusted and it is easy to configure it to supply the small amount a diode would need. * The only thing i would be worried about is a spike in the waveform. That should be minimized by the capacitor. it would be neat to have a blue pointer sitting on top of a 9v

There are also some other pages there which have circuits which i'd be interested in trying. *This page has the blocking oscillator set up to step down the voltage, but you can also configure it to step up the voltage from a pair of AA batteries, or a single AA or AAA.
These circuits are very easy to build, and flexible parts wise. *you can use most any small signal npn such as a 2n3904.
Opinions?


tiny28 is offline   Reply With Quote







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







Old 12-30-2007, 08:46 AM #2
rog8811's Avatar
Class 3B Laser
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
rog8811 rog8811 is offline
Class 3B Laser
rog8811's Avatar
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
Default Re: 9v blocking oscillator laser supply?

To be honest I have no clue whether that would be good for the blueray, but If you wanted to you could get the 7805 circuit to sit on top of a PP3 (9v) battery and it has a lower component count.

Regards rog8811
__________________
See all of my videos on Vimeo
http://www.vimeo.com/4454150

Lots of tutorials and information on lasers
http://www.rog8811.com/

In the land of the blind the one eyed man..... is most likely holding the laser
rog8811 is offline   Reply With Quote
Old 12-30-2007, 09:09 PM #3
Junior Member
 
Join Date: Aug 2007
Posts: 3
Rep Power: 0
tiny28 is on a distinguished road
tiny28 tiny28 is offline
Junior Member
 
Join Date: Aug 2007
Posts: 3
Rep Power: 0
tiny28 is on a distinguished road
Default Re: 9v blocking oscillator laser supply?

yeah a 7805 does have a lower parts count by far, but its a linear regulator and you'll never get more than around 50% efficiency running off a 9v and powering a 4.5v diode. I like efficiency if it is obtainable Another thought... these diodes are meant to be pulsed right? Providing the pulse from the coil isn't too much and the cap filters some of it, i wonder if you might be able to drive the laser a bit harder before burning it out.
tiny28 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 03:08 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