Don's homepage!

Time 2020-07-27 14:08:16

Web Name: Don's homepage!

WebSite: http://donklipstein.com

ID:36498

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LEDs in General | Brightand Efficient LEDsLighting Top Page | Incandescant and Halogen Lamps |Fluorescent LampsCompact Fluorescent -General Info |Hints, Brand/Model Test Results updatedDischarge Lamp, Neon, HID, Mercury, Metal Halide, Sodium General InfoShort Arc Lamps |Car Headlight HID / Xenon LampsXenon Strobe Top Page |Sam G.'s Strobe FAQ |Strobe, Parts SuppliersParts for Building Big Strobes |Xenon Strobe Hazards and SafetyVolt/watt/joule general guidelines |for specific popular flashtubesUV lamps, general info and EPROM erasing |Odd and Unusual LampsSome Tech Principles of Discharge Lamps |High Voltage StuffTesla Coils | Plasma Spheres / Lightning GlobesJacobs Ladders | Carbon Arcs |Silly Neon Lamp TricksLasers - my bit |Sam G.'s Mighty Laser FAQ |InfraredMost recent update anywhere in this site other than notes of progress inlinked sites - 7/26/2020.Most recent update on linked sites 7/26/2020. Linked sites are likely toget updates before I next note them.CAUTION: This site describes open source hardware and has open source software.Please read my disclaimer.Look here for hints and ideas for electronic and other hobbyists, as well assome lighting related info that you might find useful or at least interesting.You may want to come back here every few months. This site is always underconstruction!The most efficient LEDs and where to get them!(updated 7/6/2020)I have an LED Main Page. (updated 7/26/2020, someexternal links noted as updated 7/26/2020.)Don's Lighting Info Center, go here to see lots ofinformation about many forms of lighting.Here you can find basic and advanced theory, other stuff includingtroubleshooting and repair hints. Lots of info on incandescent, halogen,fluorescent, compact fluorescent, HID lamps such as mercury, metal halide,high pressure sodium, and short arc lamps!Also info on neon, low pressure sodium, oddballs such as green neon lamps.Even a bit on UV lamps, night lights, lightbulbs lasting a century, electronicballasts, and carbon arcs. Also better info on lamps for growing plants.Added 2/15/2010 - s/p ratios of many light sources!(updated 7/6/2020)Don's Laser Top Page.Ways to hack some cheap laser pointers to obtain boosted power (anywhere from 7to 30-plus mW) that makes them dangerous and illegal to use as toys! Links towhere to get dangerous 15 to 190 milliwatt green laser pointers and 1-watt blueones as visible as 60-800 mW red lasers would be! NEW - orangish-yellow laserpointers, blue ones, violet ones, now bluish green and emerald green ones! Alsostuff on He-Ne lasers and more. This includes how to make a UV laser whoselasing medium is air at low-altitude atmospheric pressure, which Ben Franklincould have built - but pre-1960 manmade lasers have yet to be recorded.(most recent update unrelated to Sam's laser FAQ 1/15/2019, links to V. 19.60of Sam's Laser FAQ 9/30/2019 and Craig Johnson's laser stuff 9/1/2018)For links to unmodified official versions of Sam Goldwasser's Laser FAQ, most ofthem leading to V. 19.80 (current as of 5/29/2020) and none older than V. 9.10(current as of 3/23/2009), as well as a 167 meg zip version 19.80, go tomy above Laser Page.(Around/over 45 megabytes of good stuff plus over 350 GIFs and JPEGs as ofV. 19.6!)Don's Xenon Flash and Strobe Page!Lots of schematics, helpful hints, precautions, xenon flash basics, partssources, mad ideas, etc. Large strobe stuff, inverter schematics, a blacklightstrobe idea (tested), xenon arc lamp stuff, more! Many files linked fromhere! (Updated 5/29/2020)Don's Tesla Coil page! (Updated 1/5/2020)Includes some nice stuff on Tesla coils in general and on solid state Teslacoils. Submitted to the Tesla Coil Web Ring 10/17/99 (though I have sinceincurred a failure to be in that webring).My Infrared Page has info on IR sources, IR filters, andIR cameras including webcam and other camera hacking! (updated 3/6/2013.)Check out my High Voltage Generator Page for a fewcircuits to get thousands of volts from low voltage DC.(Latest update a minor one 3/22/2011.)Even more things now, like Jacobs ladders, plasma spheres, neon lamposcillators, etc. To find out how these work and how to make these,go here! (Latest update a minor one 9/23/2008)Spectra online! Visible line spectra of variouselements and a few common light sources. (15 spectra plus a wavelength scale asof 7/4/99, link added to another site 7/4/2005.)Now lighting and color as far as stars are concerned is here. Although fornow concentrating on Gliese 581, and specificallytheoretically on that red dwarf's discovered-in-2007 "earthlike" planet.Updated 1/2/2011.NEW! Hints to make your PC run faster.Includes Dan Barclay's patch to blazingly improve math coprocessor usageby Quick Basic 4.5 and other Microsoft programming languages. Also how to get higher math speed by compromising the math coprocessor precision insome C compilers! Also simple stuff like more memory, registry cleaning,and some fairly-easy-and-safe manual registry editing and tweeks!(updated 2/21/2017, most pre-2005 stuff is moved to a linked page.)Download Dan Barclay's math coprocessor patch fromhere to greatly speed math coprocessor usage by some Microsoft programminglanguages, especially Basics (such as Quick Basic 4.5 and Basic 7 / QBX andpossibly some versions of Visual Basic and maybe some C and C++ products) andexecutables produced by these programming languages. This is a zip file withthe patch, and lots of usage instructions and hints by the patch author andalso by me. Math speed is usually doubled to tripled, sometimes more.This may apply mostly only to some pre-2000 Microsoft programming languages or"programming environments".There is loudspeaker stuff here. Already here:Plans to get big sound from a cheap 5-inch fullrange, and amazing lowerbass from a Radio Shack 10 inch woofer at home or in a car with a trunk.Also: Plans for very cost-effective bass bins, also how to make piezotweeters sound more natural. Just added: Mad ideas based on the unimportanceof frequencies below 600-800 Hz to the intelligibility of the human voice. Getmore apparent voice PA power with 70 percent less amplifier power!(Slight update 6/19/2011 but progress here is low since before 2008)Fellow Electronics Experimenters and Mad Scientists - MAD SCIENTIST CENTRAL - this page is new 8/20/2001,updated 1/28/2016. Links to fellow mad hobbyists (especially electrical)with homepages. Many web resources good for adventurous tinkerers.Don's Downloadable Software!Freeware is here now, and as of 1/2/2011 it's all freeware!As of now, DOS executables are available for all programs available hereand BASIC source code is posted for all freeware available here.Requirements are usually a version of DOS absolutely minimum of no more than2.3, preferably 3.0 or higher, normally available under Microsoft Windows3.anything, 95 and 98. Windows XP "Command Prompt" at least generally workswith these. Some programs require VGA or compatible display (the usualnowadays since 1994 or so).Number of programs available as of 1/2/2011: 3 freeware. Two deal withblackbody radiators, especially for lighting. The 3rd is a highly improvedloudspeaker enclosure one using Thiel-Small parameters and enclosureparameters to predict on-axis frequency response, after many real-worldfactors.Please read my Copyright Info and myDisclaimers.Links to other sites I consider worthwhile:NOTE - some links are moving to the separate "MadScientist Central" page.Sam Goldwasser's site at repairfaq.org!The laser, strobe, and fluorescent lamp documents that are mainly of hisauthorship can be found there as well as here. Also tons of otherelectronics repair and electronics stuff!Techlib.com's circuit library, supersedesWenzel, including some interesting ones for hobbyists. Circuits are in PDFformat. Link updated 1/28/2008.A mad gift that I gave one of my brothers forChristmas 2004... (New file added late 12/26/2004)YOUR VOTE COUNTS!Dozens of significant elections decided by margins of51-49 and even just a few votes, and one by a large margin but with turnoutso low that the losing side had a chance to win their battle of the century inHouston. You might have voted in one of these or sat out one of these! Effectsof elections as far back as 1985 persist today! With many razor-thin resultsincluding but also besides the 2000 presidential election! Even 2000 stateresults for President close other than the Florida battle. My home stateusually has legislative majority by a party of only 1-3 seats and maybe once adecade a legislative seat is decided by fewer than 100 votes! In 2006, 23 votesdetermine party majority of one house of PA's legislature! In 2006, .3% of VAvoters give the Democrats a majority of the US Senate! U.S. House seats getdecided by a couple hundred votes or less twice in the past two decades - and inthis time a significant tax bill passes by one House vote!UPDATE 3/14/2018!I appreciate feedback. Go ahead and dropme a line! I read all non-"SPAM" e-mail, but sorry I can't reply to all of thelegitimate e-mails sent to me!

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