Post by thread:Laser Diodes and Driver Circuits

Yoshi, Someone sent me these sites with a LOT of good information on laser diofes, take a look. Useful information on laser diodes can be found at: http://www.repairfaq.org/sam/laserdio.htm A lot of different driver circuits with explanations: http://www.repairfaq.org/sam/laserdps.htm cheers, Phil "There are three principal ways to lose money. Wine, women, and engineers. Whi le the first two are more pleasant the third is by far the more certain." -- Baron Rothschild ca. 1860

hello do you know what is used for laserjammers (speedcontrol) -----Ursprungligt meddelande----- FrŒn: Philip Starbuck <spam_OUTstarbuckTakeThisOuTEMPIRENET.COM> Till: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU <PICLISTKILLspamMITVMA.MIT.EDU> Datum: den 16 oktober 1998 22:02 €mne: Laser Diodes and Driver Circuits {Quote hidden}>Yoshi, > >Someone sent me these sites with a LOT of good information on laser diofes, take a look. > >Useful information on laser diodes can be found at: > >http://www.repairfaq.org/sam/laserdio.htm > > >A lot of different driver circuits with explanations: > >http://www.repairfaq.org/sam/laserdps.htm > > >cheers, > >Phil > > >"There are three principal ways to lose money. Wine, women, and engineers. While the first two are more pleasant the third is by far the more certain." > -- Baron Rothschild > ca. 1860 >

On Sun, 18 Oct 1998, mats monier wrote: > hello do you know what is used for laserjammers (speedcontrol) Small nukes will do fine. Maybe a chemical laser, but you have to wear armor when using it ;) Drive carefully. Peter

At 06:52 PM 10/18/98 +0000, you wrote: >On Sun, 18 Oct 1998, mats monier wrote: > >> hello do you know what is used for laserjammers (speedcontrol) > >Small nukes will do fine. Maybe a chemical laser, but you have to wear >armor when using it ;) Drive carefully. The bright yellow foglist often sold for 4-wheel-drive vehicles do a wonderful job of screwing up the light-based "radar" used by police. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================

On Mon, 19 Oct 1998, Andy Kunz wrote: > At 06:52 PM 10/18/98 +0000, you wrote: > >On Sun, 18 Oct 1998, mats monier wrote: > > > >> hello do you know what is used for laserjammers (speedcontrol) > > > >Small nukes will do fine. Maybe a chemical laser, but you have to wear > >armor when using it ;) Drive carefully. > > The bright yellow foglist often sold for 4-wheel-drive vehicles do a > wonderful job of screwing up the light-based "radar" used by police. What is a foglist ? Unless it's something that makes really bright fast pulses in the IR domain it's useless. Peter

Peter L. Peres wrote: > > On Mon, 19 Oct 1998, Andy Kunz wrote: > > > At 06:52 PM 10/18/98 +0000, you wrote: > > >On Sun, 18 Oct 1998, mats monier wrote: > > > > > >> hello do you know what is used for laserjammers (speedcontrol) > > > > > >Small nukes will do fine. Maybe a chemical laser, but you have to wear > > >armor when using it ;) Drive carefully. > > > > The bright yellow foglist often sold for 4-wheel-drive vehicles do a > > wonderful job of screwing up the light-based "radar" used by police. > > What is a foglist ? Unless it's something that makes really bright fast > pulses in the IR domain it's useless. > > Peter Foglights, I think he meant; If you had 'em sprung so they bounced up & down a little (Rubber mounted, not directly bolted), maybe that'd do it, maybe not - I don't know <G> I am curious, though! One company does sell an IR diode array, that could be a nice PIC project <G> How fast is fast? How bright is bright? <G> Mark

> > The bright yellow foglist often sold for 4-wheel-drive vehicles do a > > wonderful job of screwing up the light-based "radar" used by police. > > What is a foglist ? Unless it's something that makes really bright fast > pulses in the IR domain it's useless. > > Peter > > It's a bit like a PicList, but some of the questions are even less clear..... Mike Rigby-Jones .....mrjonesKILLspam.....nortel.co.uk

>> The bright yellow foglist often sold for 4-wheel-drive vehicles do a >> wonderful job of screwing up the light-based "radar" used by police. > >What is a foglist ? Unless it's something that makes really bright fast >pulses in the IR domain it's useless. My fingers didn't obey my mind. Fog lights. They are very common in the USA, especially in certain "cowboy" mentality areas. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================

On Mon, 19 Oct 1998, Mark Willis wrote: > How fast is fast? How bright is bright? <G> Fast: depends on modulation system in the transmitter, should be faster than 1 msec in any case. If they use a semiconductor IR laser, you lose. Bright: About as bright as your average laser pointer's spot on the wall, but in IR. So, very roughly, about 1 mW/25mm^2. I can quite see some nut pasting his car full of IR leds just to check it out. If any1 on this list does it, send me an email ;) I can see a big future in fiber woven mats with SMT IR leds in the fabric ;) Could put some visible ones in too, to show the trooper's it's just a beer ad. <g> TIA, Peter