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Laser
Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.
We found 374 threads matching "laser"
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The most relevant threads are listed first
Edge-cutting Laser Pointer Plus Laser Presenter Boosts User Ability
TomFred - 2008-02-28 06:36:00
Price Updated
Popular laser pointer now also serves wireless laser presenter with
Power Point compatible function delivering high work efficiency. This
kind of Laser Pointer with Page Up down Function is the best choice
for office and teaching presentation. The special Laser Presenter is
suitab...
Anybody seen a spice model for a laser diode?
Michael - 2008-01-26 08:29:00
Hi there - I was thinking about trying to design a laser driver over
the weekend. Unfortunately, I can't seem to find a spice model for a
laser diode, putting a bit of a squabash on that plan.
Anybody know where I can find one? Ideally I'd find one for a very
normal ~5mw red laser diode - like...OT: Ha! Finally Found Something Not on Wikipedia
D from BC - 2010-02-18 23:07:00
Not of wiki..
"Laser Telemetry"
http://en.wikipedia.org/w/index.php?title=Special%
3ASearch&search=LASER+TELEMETRY&go=Go
A laser telemeter is an instrument for measuring distance.
Using a laser telemeter to measure distance is called laser telemetry.
Reference:
http://www.pearson.ch/dow...Re: OT: Ha! Finally Found Something Not on Wikipedia
life imitates life - 2010-02-24 21:13:00
On Wed, 24 Feb 2010 09:23:50 -0800, D from BC
wrote:
> In article ,
> pasticcio@thebarattheendoftheuniverse.org says...
> >
> > On Sat, 20 Feb 2010 14:41:05 -0800, D from BC
> > wrote:
> >
> > > I claim the formation of the acronym LASER was the result of someone too
> > ...Diode Laser
Jon Slaughter - 2010-03-09 14:36:00
What does a diode laser module add to a diode laser? A voltage regulator or
current limiter?
...Go cheap or functional when choosing laser presenter
TomFred - 2008-02-25 04:49:00
At some point or another in everybody's working life, a presentation
in front of one's peers, colleagues, or customers is inevitable. Laser
presenter offers a very nice alternative to remaining tethered to a PC
while cranking through the PowerPoints.
Since i am a person who like playing too mu...DVD Laser Head Control
RonGr - 2009-11-24 07:13:00
Hi NG.
Has anyone tried to work with DVD writer laser head modules like
these:
http://www.matelectronics.com/acatalog/Mat_Electronics_DVD_Laser_Parts_Accessories_26.html
I do not mean just using the Laser diode from the system, but actually
interfacing to the ribbon cable/cable connector ...Re: Shock line? Anyone make one?
2009-01-26 18:33:00
take a look at patents by Cymer and LLNL for laser work , especially
excimer and copper vapor lasers.
ie magnetic pulse compression laser power supplies.
Steve Roberts
...PWM control
Dave, I can't do that - 2008-07-30 14:27:00
Hi people,
I have an 1992 Synrad laser. I need a PWM controller to set the
intensity. I'd like something that has an input that can be controlled
by a pin on the Parallel port of a computer, but will be happy with a
manual control that I can set for intensity.
Because the laser is so old Sy...UPS: "Do not connect laser printer..."
notme - 2009-07-19 11:21:00
What is it about laser printers that causes UPS manufacturers to recommend
they not be powered by a "stepped approximation to sine" UPS? It's a SMSP,
isn't it? What makes it special such that it needs sine-only? No such caution
re. computers, etc...
Thanks.
...First pure green semiconductor laser:
Jan Panteltje - 2009-07-29 13:46:00
First pure green semiconductor laser:
http://global-sei.com/news/press/09/09_08.html
Would be nice in solid state beamers for example.
...Re: "The Amateur Scientist" archive articles are back
Dirk Bruere at NeoPax - 2008-07-18 07:07:00
beatywj@gmail.com wrote:
> On Jul 13, 11:53 am, Dirk Bruere at NeoPax
> wrote:
> > przemek klosowski wrote:
> > > On Fri, 11 Jul 2008 14:01:17 +0000, Leon wrote:
> > > > I remember a dye laser that was *very* dangerous.
> > > It wasn't a dye laser that was dangerous---it was the Nitro...Re: UV light and damage to a CCD? (Ping Phil Hobbs)
2009-10-22 17:51:00
Many people in the European laser show industry, where audience
scanning is allowed, (if you watch your MPE levels), can tell you that
a lot of CCD and DLP devices can be damaged by focused visible laser
powers as low as 50 mW. I've personally nuked vidicons with 5 mw
633 nm light, when well...A3 Laser Printer?
Jamie - 2009-09-12 11:32:00
Any recommendations for a home use
Laser printer that can handle A3 paper, that won't put me out
in the poor house?
I really need to be able to print longer paper for schematics and
prints at home. I normally use the printers at work that take care of
this issue how ever, they are getti...Laser Printer Orientation
Marcus - 2008-03-14 07:56:00
Does anyone know whether a laser printer can operate properly in any
position? I am modifying a Samsung ML-2510 to print on thicker material, but
to do so I need the back of the printer to face up, i.e. the front in now on
the table. My concern is that the toner/drum cartridge might be gravity...Re: How you can tell someone is a pirate.
UltimatePatriot - 2009-04-24 21:21:00
On Fri, 24 Apr 2009 17:36:07 +0100, Eeyore
wrote:
>
>
> UltimatePatriot wrote:
>
> > So far, the best, quickest one I have heard is using a laser to burn,
> > cut and blind the fuckers. No more pirate, and he'll be a burden on the
> > rest. They'll surely kill him off... One l...Re: Cheap DAC for PC
2009-03-15 09:30:00
We have used these with good results down to DC, for laser beam
positioning, and several dozen people have copied the project.
http://cgi.ebay.com/USB-5-1-Ch-optical-Controller-Audio-Sound-Card-S-PDIF_W0QQitemZ260376310246QQihZ016QQcategoryZ108984QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
You will...A0 laser printers
Jan Panteltje - 2009-09-13 10:02:00
By OB1
Actually the laser and other printer era is over.
The pdf and gif era is here.
If your c[l]u[n]stomer is unable to use vector graphics,
because they have not heard of a laptop or PC yet,
give them a free ebook reader or laptop.
They will be thankful.
And send them pdf format files.
So...Position Sensor 2 D
Howhurley - 2008-07-07 11:26:00
I am working on a design requiring synchonization of two tool pieces
with a variable thickness membrane between them. I want to be able to
run a system to get the parts within a few mm, and a laser with enough
excess gain to be picked up on a pcb mounted ccd mounted on a sensor
on the bottom. ...Re: OT: Ha! Finally Found Something Not on Wikipedia
2010-02-24 13:33:00
On Wed, 24 Feb 2010 10:16:52 -0800, D from BC
wrote:
> In article ,
> pommyB@dsl.pipex.com says...
> >
> > On Sat, 20 Feb 2010 22:11:14 -0800, life imitates life
> > wrote:
> >
> > > On Sat, 20 Feb 2010 14:41:05 -0800, D from BC
> > > wrote:
> > >
> > > > (LASER f...Quadrant pyroelectric detector for femtoseconds laser pulse detection
Mathieu G - 2009-08-24 07:40:00
Hello,
I would like to design the electronics to use the Eltec 4202 quadrant
pyroelectric detector ( datasheet:
http://silverlight.ch/pdf/eltec_4202.pdf ) to detect the position of a
~100fs pulse width 1kHz repetition rate pulsed laser beam.
I would like to resolve each peak with the ampli...Smoke detector
2008-11-18 14:37:00
I'm studying smoke detector, but i don't understand very well how it
works....
If i consider a photoelectric smoke detector, it shoud work in this
manner
1)a photodetector and a diode laser are present in the same chamber,
but photodetector is angulated so , if smoke is not present, radiation
...Re: OT: Ha! Finally Found Something Not on Wikipedia
life imitates life - 2010-02-24 21:15:00
On Wed, 24 Feb 2010 11:33:46 -0700, no_one@no_one.com wrote:
> On Wed, 24 Feb 2010 10:16:52 -0800, D from BC
> wrote:
>
> > In article ,
> > pommyB@dsl.pipex.com says...
> > >
> > > On Sat, 20 Feb 2010 22:11:14 -0800, life imitates life
> > > wrote:
> > >
> > > > On Sat,...Secondary Theory: Burn speed for outer rings to high, causing bad outer rings, causing backup failure for cd's.
Skybuck Flying - 2008-08-25 11:34:00
Hello,
I noticed how the CD has little bumps at the outer rings of the cd.
Like the laser skipped over it... like a rock over the water.
Theory is:
CD Burning fails/is bad at the outer rings of the CD's !
Maybe the speed at the outer sides is to high for the laser !
Result:
A fe...Re: Phase comparison
2009-05-06 01:43:00
Tim, thanks a lot for your reply.
I was thinking of building a homemade laser measuring tape, just to
see if a bare bones implementation can achieve any sort of accuracy.
Right now I'm driving a cheap laser diode at 4 mhz. My photodiode+amp
receiver is a bit deaf (or blind).
And I wasn't ...Re: Star Wars - in your back yard
2010-02-19 10:06:00
Speaking strictly as a former laser show tech...
1. It takes about 60 watts of Q Switched light to kill a bug, and it
doesn't really quickly kill them, it burns the wings off. Bugs fairly
regularly die within 20 feet of the laser at the rare laser shows that
still have that kind of power. But...laser FM detector
2008-02-23 09:18:00
Greetings! I'm a fresh college student currently learning electronic
communications. I have been planning on a project that makes use of
lasers to transmit signals through the laser beam, shifting a beam
using a mirror mounted on a vibrating speaker cone.
For the receiving end, I'll be making ...Re: OT: Blinding Bugs with a Laser Pointer
John Devereux - 2009-12-01 10:19:00
Jim Thompson writes:
> On Mon, 30 Nov 2009 20:02:04 -0600, krw wrote:
>
> > On Mon, 30 Nov 2009 18:39:27 -0700, Jim Thompson
> > wrote:
> >
> > > On Mon, 30 Nov 2009 19:22:25 -0600, krw wrote:
> > >
> > > > On Mon, 30 Nov 2009 13:53:43 -0500, Wingsy wrote:
> > > >
> >...VCSEL Laser diode ?
Hammy - 2008-06-04 06:52:00
Can a laser diode like the VCSEL OPV382 850nm be pulsed similar to an
IRDA; carrier frequency and data?
Data sheet.
http://www.optekinc.com/pdf/OPV382.pdf
What would be the maximum transmission distance?
The 2 page data sheet on the diode is pathetic, so if anyone has
experience with t...Fiber-optical switch/multiplexer
Joerg - 2008-09-15 20:59:00
Ok, this is a borderline electrical and optical issue so I posted to
both groups. I am looking for optical "toggle" switches that are
controlled electronically (typically via a highish voltage). Needs to
tolerate 500W laser pulses in the IR range, 5-10uJ, average laser power,
is less than 10...Re: OT: Ha! Finally Found Something Not on Wikipedia
FatBytestard - 2010-02-24 22:55:00
On Wed, 24 Feb 2010 19:17:09 -0800, "JosephKK"
wrote:
> On Wed, 24 Feb 2010 14:07:35 -0800, D from BC wrote:
>
> > In article ,
> > no_one@no_one.com says...
> > >
> > > On Wed, 24 Feb 2010 10:16:52 -0800, D from BC
> > > wrote:
> > >
> > > > In article ,
> > > > ..."Laser listener" bugging works on skin, clothing
Bill Beaty - 2010-02-05 15:53:00
Ooooo, superneatocool! These guys have discovered that a speckle-
pattern made by a laser spot hitting a distant surface ...is
modulated with audio! Let your laser hit the skin or clothing
(or cellphone) of a very distant person, and you can tap into their
conversation or listen to their ...Re: Economy thermal imager?
Lostgallifreyan - 2009-07-22 16:25:00
Fester Bestertester wrote in
news:0001HW.C68CBEC10010FF2AB08A39AF@news.eternal-september.org:
> There are instructions on the 'net I've seen for removing the IR filter
> from a digicam's digitizer chip so as to allow recording of the IR
> spectrum.
>
> Commercial thermal imagers a...Any opinions on signwarehouse.com
IGot2P - 2008-08-06 18:08:00
Just thought maybe someone here had did some business with them. If so,
comments appreciated before I make a laser purchase.
Don
...Re: Measuring system with accuracy of three decimals
2009-12-16 10:34:00
On Dec 15, 4:21=A0pm, George Herold wrote:
> On Dec 15, 3:20=A0pm, dagmargoodb...@yahoo.com wrote:
>
>
>
> > On Dec 15, 10:29=A0am, George Herold wrote:
>
> > > On Dec 15, 9:50=A0am, Karthik A wrote:
>
> > > > Hi.I want to construct my final year project.I decided to...Re: Charging a capacitor to 6kV
Jan Panteltje - 2008-04-01 12:05:00
On a sunny day (Tue, 1 Apr 2008 08:27:07 -0700 (PDT)) it happened z
wrote in
:
> used to be the Model T spark coil was the experimenter's tool of
> choice for such things. where did they all go?
> anyway, i tried to make HV using a (modern) car ignition coil with a
> doorbell buzzer in ...Re: So how does this work?
Tim Wescott - 2009-06-29 13:07:00
On Sun, 28 Jun 2009 17:14:10 +0000, Jan Panteltje wrote:
> How does this work?
> http://emdrive.com/
>
> Time to modify the microwave ?
The basic physics is based on the fact that photons have momentum, so if
you shove a bunch of microwave photons out the back, you'll get a
moment...Switcher Inductor Ripple Current
2009-03-13 11:02:00
I need to design a constant current buck switcher. I need to power a
Perkin Elmer krypton long arc lamp, a QCW12. At the middle of the
lamp's V-I curve, near where I want to run, the lamp voltage is
155V DC @ 20A. I want to run at 80-100 Khz off rectified 220
line. I've serviced thes...Re: Electron filmed in motion for the first time
Skybuck Flying - 2008-02-26 21:32:00
Maybe the rings are just the light/laser ?
So then what is the electron ?
The little blue particles moving around ?
Hmm..
Bye,
Skybuck.
...