====== Dokuwiki Introduction ====== **[[puppy|Puppies!]]** //[Unfortunately due to excessive spambot activity, only registered users can log in and post to this site at present. Apologies.]// This software stores its data as text files so it is easier to export it to another format when necessary. The [[http://wiki.splitbrain.org/wiki%3Amanual|documentation]] is surprisingly good and available through the Syntax:[[http://wiki.splitbrain.org/wiki:syntax|Dokuwiki]]link on the left side of every page. //Please keep in mind this wiki is essentially my notebook. I fix errors as I find them and clarify things as I can, but there is still stuff on here that is confusing and some that is just plain wrong. With that in mind, here are a few of the better things I've written.// * **[[sop]]** * [[crystal_radio:tuggle_tuner|An explanation]] for my [[http://waggy.org/electronics/tuggle_tuner-calc.php|Tuggle Tuner Calculator]] * CE Numerical Methods [[cenumeric:project]] //(Please ignore the stated conclusion. Although it is not perfect, this hydraulic model of a crystal radio does appear to work properly, but explaining this was beyond the scope of the assignment.)// * Concrete [[concrete:project_2-report]] * Economic Analyses: [[econ:coffee_roast_solar]] and [[econ:beer:extract_vs_grain]] * [[practice:landmark:paper]] {{practice:landmark:presentation_1.ppt}} {{practice:landmark:presentation_1.odp}} * [[practice:ethics:paper]]{{practice:ethics:sustainability.ppt}} * [[cedesign:ethics-proposal]]{{practice:ethics.ppt}} * [[http://waggy.org/electronics/hackaday-challenge/]] * POV-Ray [[povray:stainedglass]] * [[http://waggy.org/demo/thrust-line/arched-opening-bilateral.php|Symmetric Arched Opening Thrust Line Calculator]] //The rest of this page has links for my convenience.// * [[OLPC]] ====== Handy External Links ====== * Handy [[http://www.cvs1.uklinux.net/calculators/|Calculators]]: [[http://www.cvs1.uklinux.net/cgi-bin/calculators/cap_imp.cgi|Capacitor Impedance]], [[http://www.cvs1.uklinux.net/cgi-bin/calculators/ind_imp.cgi|Inductor Impedance]], [[http://www.cvs1.uklinux.net/cgi-bin/calculators/tuned_circuit.cgi|Tuned Circuit]] * [[http://www.the12volt.com/caraudio/crosscalc.asp#ccc|Passive Filters]] and [[http://www.the12volt.com/caraudio/crosscalc2.asp#cc|Narrow Band Pass]], [[http://www.the12volt.com/caraudio/cross6db.asp#bp|6 dB Schematics]] and [[http://www.the12volt.com/caraudio/cross12db.asp#bp|12 dB Schematics]] ====== Low Power ====== Consider low power as less than one-tenth of a watt (< 100 mW). * Low Power Applications * [[electronics:crystalradio]] * [[crystal_radio:tuggle_tuner|Tuggle Tuner Calculator]] * [[http://waggy.org/electronics/tuggle_tuner-calc.php?R_ant%5BOhm%5D=25&L_ant%5BuH%5D=20&L_load%5BuH%5D=0&C_ant%5BpF%5D=200&C_load%5BpF%5D=0&C_gnd_min%5BpF%5D=12&C_gnd_max%5BpF%5D=320&C_gnd_par%5BpF%5D=33&C_tnk_min%5BpF%5D=12&C_tnk_max%5BpF%5D=380&C_tnk_par%5BpF%5D=0&L_tnk%5BuH%5D=174&version=1.10|380/320+33]] * Current: [[http://waggy.org/electronics/tuggle_tuner-calc.php?R_ant%5BOhm%5D=25&L_ant%5BuH%5D=20&L_load%5BuH%5D=0&C_ant%5BpF%5D=200&C_load%5BpF%5D=0&C_gnd_min%5BpF%5D=20&C_gnd_max%5BpF%5D=340&C_gnd_par%5BpF%5D=20&C_tnk_min%5BpF%5D=10&C_tnk_max%5BpF%5D=425&C_tnk_par%5BpF%5D=0&L_tnk%5BuH%5D=180&version=1.10| 425/340+20 pF,180+0 uH]] * [[http://waggy.org/electronics/tuggle_tuner-calc.php?R_ant%5BOhm%5D=25&L_ant%5BuH%5D=20&L_load%5BuH%5D=0&C_ant%5BpF%5D=200&C_load%5BpF%5D=0&C_gnd_min%5BpF%5D=10&C_gnd_max%5BpF%5D=500&C_gnd_par%5BpF%5D=0&C_tnk_min%5BpF%5D=10&C_tnk_max%5BpF%5D=520&C_tnk_par%5BpF%5D=0&L_tnk%5BuH%5D=162&version=1.10| 520/500+0 pF,162+0 uH]] * [[crystal_radio:detector]] * [[electronics:crystal_earplug]] * **[[http://waggy.org/electronics/horn-LC.php?T_F=82&SF=1&L_horn_in=32.5&d_throat_in=0.275&d_mouth_in=16&L_mH=865&R_s_Ohm=5|Current Brass Flower]]** * [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=93&R_s_Ohm=2.8|28", 93 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=210&R_s_Ohm=3.4|28", 210 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=374&R_s_Ohm=4|28", 374 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=1128&R_s_Ohm=9|28", 1128 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=830&R_s_Ohm=8|28", 830 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=579&R_s_Ohm=5|28", 579 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=208&R_s_Ohm=9|28", 208 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=109.3&R_s_Ohm=2.8|28", 109.3 mH]], [[http://waggy.org/electronics/horn-LC.php?L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=78.7&R_s_Ohm=7.5|28", 78.9 mH]], [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.1&d_throat_in=1&d_mouth_in=7&L_mH=229&R_s_Ohm=72|28", Audio Transformer]] * [[http://waggy.org/electronics/horn-LC.php|Match LC Circuit to Horn]] * [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.25&d_throat_in=1&d_mouth_in=7&L_mH=56.8&R_s_Ohm=4|Kyocera (Blue), 28", 56.8 mH]] * [[http://waggy.org/electronics/horn-LC.php?T_F=72&SF=1&L_horn_in=28.25&d_throat_in=1&d_mouth_in=7&L_mH=102.4&R_s_Ohm=18|Match Bogen-725 Brown-black to 28" Horn]] * [[http://waggy.org/electronics/horn-LC.php?T_F=75&SF=1&L_horn_in=4.75&d_throat_in=1.6&d_mouth_in=14.5&L_mH=50&R_s_Ohm=5|Blue Piezo, Back-loaded]] * [[crystal_radio:casual]] * [[http://waggy.org/electronics/tuggle_tuner-calc.php?R_ant%5BOhm%5D=25&L_ant%5BuH%5D=20&L_load%5BuH%5D=0&C_ant%5BpF%5D=200&C_load%5BpF%5D=0&C_gnd_min%5BpF%5D=10&C_gnd_max%5BpF%5D=60&C_gnd_par%5BpF%5D=0&C_tnk_min%5BpF%5D=10&C_tnk_max%5BpF%5D=160&C_tnk_par%5BpF%5D=0&L_tnk%5BuH%5D=450&version=1.10|60/160 Tuggle Tuner]] * [[electronics:crystal_fm]] * [[electronics:crystal_nwr]], ([[electronics:crystal_nwr-notes|Notes]]) * [[crystal_radio:theory]] * [[crystal_radio:tank]] * [[crystal_radio:impedance]] * [[electronics:crystalradio-model]] * [[electronics:joulethief]] * Low Power Sources * Small Solar Cell * Peltier Module * Wind Belt * Shake Charger * [[electronics:manurefuelcell]] * Lemon Battery * [[http://www.theautochannel.com/news/2005/12/20/184393.html|Trees]], [[http://uwnews.org/article.asp?articleID=51869|more]] * Low Power Storage * Rechargeable Battery * Capacitor Notes * Low Impedance: < 100 Ω * High Impedance: > 1 kΩ