http://www.instructables.com Sat, 18 May 2013 15:17:26 PDT BLOX v1.01 http://www.instructables.com/id/Emergency-LED-powered-by-Fire/
Emergency Light/Charger from Fire & Water - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F4P/Z6AJ/HGH70RF2/F4PZ6AJHGH70RF2.SQUARE2.jpg http://www.instructables.com/files/deriv/F4P/Z6AJ/HGH70RF2/F4PZ6AJHGH70RF2.SQUARE.jpg http://www.instructables.com/files/deriv/F4P/Z6AJ/HGH70RF2/F4PZ6AJHGH70RF2.SMALL.jpg Joohansson A DIY of a really simple Thermoelectric Emergency Generator from very few parts. Optimized for powering with tealights/candles. With inspiration from my previous projects: http://www.instructables.com/id/Thermoelectric-Fan-Driven-by-a-Candle/ and http://www.instructables.com/id/Battery-Charger-Powe...
By: Joohansson

Continue Reading »]]> Thu, 16 May 2013 00:04:27 PDT http://www.instructables.com/id/Battery-Charger-Powered-by-Fire/
Smartphone Charger Powered by Fire - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F12/HOAD/HFPTEVTJ/F12HOADHFPTEVTJ.SQUARE2.jpg http://www.instructables.com/files/deriv/F12/HOAD/HFPTEVTJ/F12HOADHFPTEVTJ.SQUARE.jpg http://www.instructables.com/files/deriv/F12/HOAD/HFPTEVTJ/F12HOADHFPTEVTJ.SMALL.jpg Joohansson Portable, Compact and Adjustable ThermoElectric Emergency Generator. Background: The reason for this project was to solve a problem I have. I sometimes do several days of hiking/backpacking in the wild and I always bring a smartphone with GPS and maybe other electronics. They need electricity a...
By: Joohansson

Continue Reading »]]> Wed, 1 May 2013 11:03:17 PDT http://www.instructables.com/id/Adjustable-Voltage-Step-up-07-55V-to-27-55V/
Adjustable Voltage Step-up (0.7-5.5V to 2.7-5.5V) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F2K/RFE1/HFPT9HVQ/F2KRFE1HFPT9HVQ.SQUARE2.jpg http://www.instructables.com/files/deriv/F2K/RFE1/HFPT9HVQ/F2KRFE1HFPT9HVQ.SQUARE.jpg http://www.instructables.com/files/deriv/F2K/RFE1/HFPT9HVQ/F2KRFE1HFPT9HVQ.SMALL.jpg Joohansson Introduction: A voltage step-up is a circuit that increases the voltage. It can be AC/AC, AC/DC, DC/AC or DC/DC. This voltage step-up is a DC/DC adjustable voltage regulator. Usually a voltage regulator is fed by a higher input than output voltage, for example 9V IN to 5V OUT. This circuit will take...
By: Joohansson

Continue Reading »]]> Wed, 1 May 2013 11:00:03 PDT http://www.instructables.com/id/Home-made-usb-power-hub-made-for-usb-hdd-disks/
Home made usb power hub (made for usb hdd disks) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FKX/68KX/HFWSU0RT/FKX68KXHFWSU0RT.SQUARE2.jpg http://www.instructables.com/files/deriv/FKX/68KX/HFWSU0RT/FKX68KXHFWSU0RT.SQUARE.jpg http://www.instructables.com/files/deriv/FKX/68KX/HFWSU0RT/FKX68KXHFWSU0RT.SMALL.jpg Bartuss Hello! Welcome to my third tutorial. This time I'm going to show you how to power up your usb disks! :) Why? If you got a pc with a thirsty graphic card and a low power source you may be suffering random crashes or even not spinning usb hard drives. Making such a hub is fun and easy. It will cost...
By: Bartuss

Continue Reading »]]> Tue, 30 Apr 2013 04:50:11 PDT http://www.instructables.com/id/ATX-Desktop-Computer-Power-Supply/
ATX Desktop Computer Power Supply - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F1W/OZ9O/HFD1E91T/F1WOZ9OHFD1E91T.SQUARE2.jpg http://www.instructables.com/files/deriv/F1W/OZ9O/HFD1E91T/F1WOZ9OHFD1E91T.SQUARE.jpg http://www.instructables.com/files/deriv/F1W/OZ9O/HFD1E91T/F1WOZ9OHFD1E91T.SMALL.jpg Kante Tech So I realize that after viewing multiple instructables and creating multiple projects I was using up batteries like crazy. I decided to wire up my own power supply after doing a quick search. My power is capable of your standard voltage of 3.3, 5, and 12. This setup and process that it took to creat...
By: Kante Tech

Continue Reading »]]> Tue, 16 Apr 2013 21:26:37 PDT http://www.instructables.com/id/How-to-multiplex-inputs-with-resistors/
Connect several digital inputs to one analog input! - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FO7/UBG7/HFD192O1/FO7UBG7HFD192O1.SQUARE2.jpg http://www.instructables.com/files/deriv/FO7/UBG7/HFD192O1/FO7UBG7HFD192O1.SQUARE.jpg http://www.instructables.com/files/deriv/FO7/UBG7/HFD192O1/FO7UBG7HFD192O1.SMALL.jpg gizzmotronics I often run out of digital pins on my Arduino. Anything as complicated as, say, a video game controller, was near impossible with the amount of pins I had available. Multiplexing buttons works, but it requires lots of connections and soldering. So, I put together a solution! Resistor Dividers in F...
By: gizzmotronics

Continue Reading »]]> Fri, 12 Apr 2013 20:23:25 PDT http://www.instructables.com/id/Voltage-Amplifier/
Voltage Amplifier - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F45/G0IP/HEXS6SJJ/F45G0IPHEXS6SJJ.SQUARE2.jpg http://www.instructables.com/files/deriv/F45/G0IP/HEXS6SJJ/F45G0IPHEXS6SJJ.SQUARE.jpg http://www.instructables.com/files/deriv/F45/G0IP/HEXS6SJJ/F45G0IPHEXS6SJJ.SMALL.jpg CarolynCross A voltage amplifier in simplest form is any circuit that puts out a higher voltage than the input voltage.  When you are forced to work with a set amount of voltage, these amplifiers are commonly used to increase the voltage and thus the amount of power coming out of a circuit. This is useful for re...
By: CarolynCross

Continue Reading »]]> Mon, 1 Apr 2013 20:25:43 PDT http://www.instructables.com/id/Thermoelectric-Fan-Driven-by-a-Candle/ http://www.instructables.com/files/deriv/FAL/IAK8/HEXSGBOS/FALIAK8HEXSGBOS.SQUARE2.jpg http://www.instructables.com/files/deriv/FAL/IAK8/HEXSGBOS/FALIAK8HEXSGBOS.SQUARE.jpg http://www.instructables.com/files/deriv/FAL/IAK8/HEXSGBOS/FALIAK8HEXSGBOS.SMALL.jpg Joohansson A Thermoelectric generator powered by a tealight. It started as an experiment of how much power I could get from one candle. But I liked the idea and it worked really well so I built this electric-mechanical ornament. I did not use a high temperature TEG-module, but instead a cheap TEC-module. That ...
By: Joohansson

Continue Reading »]]> Sat, 30 Mar 2013 03:04:10 PDT http://www.instructables.com/id/building-the-poor-mans-mini-tesla-coil-slayer-exc/
building the poor-mans mini tesla coil ( slayer exciter ) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FPK/CH8P/HELXKKI7/FPKCH8PHELXKKI7.SQUARE2.jpg http://www.instructables.com/files/deriv/FPK/CH8P/HELXKKI7/FPKCH8PHELXKKI7.SQUARE.jpg http://www.instructables.com/files/deriv/FPK/CH8P/HELXKKI7/FPKCH8PHELXKKI7.SMALL.jpg -max-     A slayer exciter is basically a small solid state tesla coil, usually with only one transistor. The circuitry for them is simple. one of the first things anyone who has built joule thieves notice is that the circuitry is very similar. the biggest difference, however, is that the small transforme...
By: -max-

Continue Reading »]]> Fri, 22 Mar 2013 14:34:24 PDT http://www.instructables.com/id/Easy-Voltage-Regulator-for-25/ http://www.instructables.com/files/deriv/FVJ/7B67/HDOVJ3YD/FVJ7B67HDOVJ3YD.SQUARE2.jpg http://www.instructables.com/files/deriv/FVJ/7B67/HDOVJ3YD/FVJ7B67HDOVJ3YD.SQUARE.jpg http://www.instructables.com/files/deriv/FVJ/7B67/HDOVJ3YD/FVJ7B67HDOVJ3YD.SMALL.jpg Beta Mode I will teach you how to make it very soon! Please vote for the Kids-Only contest! Comment, Vote and Rate!
By: Beta Mode

Continue Reading »]]> Fri, 1 Mar 2013 01:00:21 PST http://www.instructables.com/id/Mini-Hydrogen-gas-generator/ http://www.instructables.com/files/deriv/F8N/YGAD/HDOW39HM/F8NYGADHDOW39HM.SQUARE2.jpg http://www.instructables.com/files/deriv/F8N/YGAD/HDOW39HM/F8NYGADHDOW39HM.SQUARE.jpg http://www.instructables.com/files/deriv/F8N/YGAD/HDOW39HM/F8NYGADHDOW39HM.SMALL.jpg kevins82 Hi ! In this instructable i will show you how to make simple HHO Generator with house hold items. Items needed.. *Jar with cap *2 stainless steel nuts *4 Stainless steel bolts *polytoobing *2 stainless steel plates *Tape *Salt *Water Tools needed *Saw *Hotglue gun *Drillpress Step by step in vide...
By: kevins82

Continue Reading »]]> Wed, 27 Feb 2013 13:01:05 PST http://www.instructables.com/id/Custom-Built-Micro-Hexacopter-Frame/ http://www.instructables.com/files/deriv/FTH/QEWU/HCLBWRX2/FTHQEWUHCLBWRX2.SQUARE2.jpg http://www.instructables.com/files/deriv/FTH/QEWU/HCLBWRX2/FTHQEWUHCLBWRX2.SQUARE.jpg http://www.instructables.com/files/deriv/FTH/QEWU/HCLBWRX2/FTHQEWUHCLBWRX2.SMALL.jpg Ben The Builder As an avid RC-er I had always wanted to build a multrotor, however it seemed too daunting. I met a kid at college that helped me through the process and I am now addicted. This is my 2nd multirotor with the first being a large quad built on an x525 V3 Frame run by an aeroquad mini. When Hobbyking ca...
By: Ben The Builder

Continue Reading »]]> Wed, 30 Jan 2013 21:33:35 PST http://www.instructables.com/id/How-to-make-a-simple-High-Voltage-Capacitor-for-T/ http://www.instructables.com/files/deriv/FUC/6YTQ/HCB8QFCJ/FUC6YTQHCB8QFCJ.SQUARE2.jpg http://www.instructables.com/files/deriv/FUC/6YTQ/HCB8QFCJ/FUC6YTQHCB8QFCJ.SQUARE.jpg http://www.instructables.com/files/deriv/FUC/6YTQ/HCB8QFCJ/FUC6YTQHCB8QFCJ.SMALL.jpg TheDoci this is a tutorial on how to make a simple non polarized High Voltage Capacitor. On use for this kind of cap is in a SGTC Tesla Coil cercuit. you will need: - 2 clear Overhead projector transparency - scisors or exactoknife - aluminum foil - 2 wires - some sort of clear tape - time optional: - cap...
By: TheDoci

Continue Reading »]]> Fri, 25 Jan 2013 09:52:40 PST http://www.instructables.com/id/How-to-make-a-small-Van-De-Graaff-generator/
Make a small, but powerful 30KV Van De Graaff generator - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FPZ/D07S/HCB8T90W/FPZD07SHCB8T90W.SQUARE2.jpg http://www.instructables.com/files/deriv/FPZ/D07S/HCB8T90W/FPZD07SHCB8T90W.SQUARE.jpg http://www.instructables.com/files/deriv/FPZ/D07S/HCB8T90W/FPZD07SHCB8T90W.SMALL.jpg -max- What is a Van de Graaff generator? you might wonder, well It is an electrostatic machine that builds up an extremely high voltage charge on a metal sphere. It was invented by Robert J. Van de Graaff in 1929. it works like this: you know how when you scuff your socks on a carpet, and then get that n...
By: -max-

Continue Reading »]]> Wed, 23 Jan 2013 19:53:37 PST http://www.instructables.com/id/5V-voltage-regulator-with-7805/ http://www.instructables.com/files/deriv/FI0/UH3E/HBXWS0B6/FI0UH3EHBXWS0B6.SQUARE2.jpg http://www.instructables.com/files/deriv/FI0/UH3E/HBXWS0B6/FI0UH3EHBXWS0B6.SQUARE.jpg http://www.instructables.com/files/deriv/FI0/UH3E/HBXWS0B6/FI0UH3EHBXWS0B6.SMALL.jpg Timofte Andrei I present to you my new project, that I've made yesterday. It's a 5V voltage regulator that I'm going to use to power my breadboard Sanguino. I've used the schematic from Sanguino site and It's looking pretty nice. I also had some issues in finding some parts like those two 100nF ceramic capacitors,...
By: Timofte Andrei

Continue Reading »]]> Sat, 19 Jan 2013 01:56:23 PST http://www.instructables.com/id/Battery-voltage-monitor/
Battery voltage monitor - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FUN/UMKM/H9G15QG0/FUNUMKMH9G15QG0.SQUARE2.jpg http://www.instructables.com/files/deriv/FUN/UMKM/H9G15QG0/FUNUMKMH9G15QG0.SQUARE.jpg http://www.instructables.com/files/deriv/FUN/UMKM/H9G15QG0/FUNUMKMH9G15QG0.SMALL.jpg chunkyhampton This voltage monitor has been designed to remotely display battery voltage so that people monitor and maintain their batteries easily. It was designed for use on off-grid reneable energy systems (such as my solar PV system), but it would also be useful to anyone who has a lead-acid battery, such as ...
By: chunkyhampton

Continue Reading »]]> Wed, 14 Nov 2012 03:43:59 PST http://www.instructables.com/id/Ac-to-Dc-voltage-multiplier/
Ac to Dc voltage multiplier - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FMW/J4TG/H97PZLVT/FMWJ4TGH97PZLVT.SQUARE2.jpg http://www.instructables.com/files/deriv/FMW/J4TG/H97PZLVT/FMWJ4TGH97PZLVT.SQUARE.jpg http://www.instructables.com/files/deriv/FMW/J4TG/H97PZLVT/FMWJ4TGH97PZLVT.SMALL.jpg ssparking rajesh hi,guys if you want to convert ac voltage to dc filtered voltage that too upto 450v this is where you will get Essential components 1)0.1uf 450v capacitor(18 pieces) 2) 1n4007 diodes(18 pieces) now solder the capacitor and diode as shown in schematics. Take care after switching off the c...
By: ssparking rajesh

Continue Reading »]]> Tue, 6 Nov 2012 22:43:11 PST http://www.instructables.com/id/High-Voltage-LED-Driver-CHEAP/
High-Voltage LED Driver (CHEAP) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F3V/1P3L/H7URB0YO/F3V1P3LH7URB0YO.SQUARE2.jpg http://www.instructables.com/files/deriv/F3V/1P3L/H7URB0YO/F3V1P3LH7URB0YO.SQUARE.jpg http://www.instructables.com/files/deriv/F3V/1P3L/H7URB0YO/F3V1P3LH7URB0YO.SMALL.jpg CircusJeff Based off dan (MonkeyLectric) page: http://www.instructables.com/id/Circuits-for-using-High-Power-LED-s/step11/an-even-simpler-current-source/ Background: I needed a low power, very bright tail light for my Electric Bike (E-bike).  I wanted something SIMPLE.  I've looked up designs for LED drivers...
By: CircusJeff

Continue Reading »]]> Thu, 4 Oct 2012 11:27:25 PDT http://www.instructables.com/id/Battery-Voltage-Indicator/ http://www.instructables.com/files/deriv/FTB/SGER/H71GP7VX/FTBSGERH71GP7VX.SQUARE2.jpg http://www.instructables.com/files/deriv/FTB/SGER/H71GP7VX/FTBSGERH71GP7VX.SQUARE.jpg http://www.instructables.com/files/deriv/FTB/SGER/H71GP7VX/FTBSGERH71GP7VX.SMALL.jpg Autonomous96 Background: A year ago, heavy rain and ice overnight caused Skimmer (my small motor boat) to capsize due to failure of the bilge pump battery. In order to prevent this disaster from re-occur I made this indicator to monitor the bilge pump battery voltage status. The LED light mounted on the dashboar...
By: Autonomous96

Continue Reading »]]> Mon, 17 Sep 2012 23:54:33 PDT http://www.instructables.com/id/Jacobs-Ladder-1/
Jacob's Ladder - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FZG/OPAE/H6WG6KCR/FZGOPAEH6WG6KCR.SQUARE2.jpg http://www.instructables.com/files/deriv/FZG/OPAE/H6WG6KCR/FZGOPAEH6WG6KCR.SQUARE.jpg http://www.instructables.com/files/deriv/FZG/OPAE/H6WG6KCR/FZGOPAEH6WG6KCR.SMALL.jpg hackmattr A Mad Scientist laboratory is not complete without a Jacob's Ladder. If you have always wanted one as a prop for Halloween or just to display, then this instructable will show you how to build one. It is very simple to make and you only need two components to make it happen. Please vote for me for ...
By: hackmattr

Continue Reading »]]> Mon, 10 Sep 2012 14:09:38 PDT http://www.instructables.com/id/Solar-Powered-LEDUltracapacitor-Arduino-Regulated/
Solar Powered LED/Ultracapacitor Arduino Regulated Light - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FL8/2591/H6MEVW3P/FL82591H6MEVW3P.SQUARE2.jpg http://www.instructables.com/files/deriv/FL8/2591/H6MEVW3P/FL82591H6MEVW3P.SQUARE.jpg http://www.instructables.com/files/deriv/FL8/2591/H6MEVW3P/FL82591H6MEVW3P.SMALL.jpg MikeTheMaker This instructable primarily shows how to control the charging voltage from a solar panel to an energy storage device (capacitors in this case). I showed how to construct the light previously http://www.instructables.com/id/Human-Powered-Light-from-my-book-Doable-Renewab/ This solar panel can ...
By: MikeTheMaker

Continue Reading »]]> Wed, 5 Sep 2012 19:20:01 PDT http://www.instructables.com/id/Relation-Between-Volt-Current-and-Resistance/ http://www.instructables.com/files/deriv/FVR/TJRZ/H5TU8PNC/FVRTJRZH5TU8PNC.SQUARE2.jpg http://www.instructables.com/files/deriv/FVR/TJRZ/H5TU8PNC/FVRTJRZH5TU8PNC.SQUARE.jpg http://www.instructables.com/files/deriv/FVR/TJRZ/H5TU8PNC/FVRTJRZH5TU8PNC.SMALL.jpg lijoppans The relationship between Volt, Current and Resistance (Ohm's Law) is express in a simple manner.
By: lijoppans

Continue Reading »]]> Fri, 17 Aug 2012 08:56:21 PDT http://www.instructables.com/id/Stand-Alone-CD-Player/
Stand Alone CD Player - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FIQ/ZK95/H5TUCM4V/FIQZK95H5TUCM4V.SQUARE2.jpg http://www.instructables.com/files/deriv/FIQ/ZK95/H5TUCM4V/FIQZK95H5TUCM4V.SQUARE.jpg http://www.instructables.com/files/deriv/FIQ/ZK95/H5TUCM4V/FIQZK95H5TUCM4V.SMALL.jpg MrJentis This is the follow up project from my cd player adapter project I did earlier to make a stand alone cd player. Other computer recycling projects I did were the Case/Safe and the EPFU. Tools and Materials This is my version of how to make a stand alone cd player using your old and useless comput...
By: MrJentis

Continue Reading »]]> Fri, 17 Aug 2012 06:53:53 PDT http://www.instructables.com/id/Powering-and-Controlling-Your-Devices-Part-1-De/
Powering and Controlling Your Devices; Part 1 - Determining Voltage and Current Requirements - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FO7/ISAI/H5IRWGU9/FO7ISAIH5IRWGU9.SQUARE2.jpg http://www.instructables.com/files/deriv/FO7/ISAI/H5IRWGU9/FO7ISAIH5IRWGU9.SQUARE.jpg http://www.instructables.com/files/deriv/FO7/ISAI/H5IRWGU9/FO7ISAIH5IRWGU9.SMALL.jpg UConTroll In addition to being an electronics engineer and programmer, I’m an avid Maker and have been tinkering with electronics for over 40 years.  During that time I’ve build dozens of electronic devices for use in and around my house and have helped friends build all types of projects.   Two questions I’m...
By: UConTroll

Continue Reading »]]> Fri, 10 Aug 2012 11:03:06 PDT http://www.instructables.com/id/Recycled-LED-Night-Light-Project-for-Newbies/
Recycled LED Night Light (Project for Newbies) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F43/QIZE/H5408M6L/F43QIZEH5408M6L.SQUARE2.jpg http://www.instructables.com/files/deriv/F43/QIZE/H5408M6L/F43QIZEH5408M6L.SQUARE.jpg http://www.instructables.com/files/deriv/F43/QIZE/H5408M6L/F43QIZEH5408M6L.SMALL.jpg crcarlos In this Instructrable, beginners will be able to learn through a vary basic but fun project, how LED, circuits, and wiring works. The end result will be a very awesome and bright night light. This Project can be easily done by kids of 7years+ but parental guidance and supervision should always be pr...
By: crcarlos

Continue Reading »]]> Sun, 29 Jul 2012 10:22:41 PDT http://www.instructables.com/id/How-to-make-a-CDROM-Power-Adapter-2/ http://www.instructables.com/files/deriv/F33/6SBS/H4VQO931/F336SBSH4VQO931.SQUARE2.jpg http://www.instructables.com/files/deriv/F33/6SBS/H4VQO931/F336SBSH4VQO931.SQUARE.jpg http://www.instructables.com/files/deriv/F33/6SBS/H4VQO931/F336SBSH4VQO931.SMALL.jpg MrJentis This is my version of a quick and simple adapter that allows you to use your laptop charger/ power supply to power your computer CDROM. It's a lot smaller and less cumbersome than say a full sized computer PSU. For more info, you can visit my webpage here. I used my Case/Safe to build this project...
By: MrJentis

Continue Reading »]]> Sun, 29 Jul 2012 09:41:37 PDT http://www.instructables.com/id/Voltage-Tree/ http://www.instructables.com/files/deriv/FZ1/DBUU/H4VQKPNX/FZ1DBUUH4VQKPNX.SQUARE2.jpg http://www.instructables.com/files/deriv/FZ1/DBUU/H4VQKPNX/FZ1DBUUH4VQKPNX.SQUARE.jpg http://www.instructables.com/files/deriv/FZ1/DBUU/H4VQKPNX/FZ1DBUUH4VQKPNX.SMALL.jpg DrNicker This is a handy technique when designing circuits. Sometimes you don't have the voltage access you need for a circuit.  Whether you're using a Bench-top supply that doesn't have enough output options, or you only have batteries on hand, this is an easy way to get multiple voltages from one source wi...
By: DrNicker

Continue Reading »]]> Thu, 26 Jul 2012 09:15:05 PDT http://www.instructables.com/id/Energino-an-Arduino-based-energy-consumption-moni/
Energino: an Arduino-based energy consumption monitoring shield - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FWZ/K6Y8/H4ZN5515/FWZK6Y8H4ZN5515.SQUARE2.jpg http://www.instructables.com/files/deriv/FWZ/K6Y8/H4ZN5515/FWZK6Y8H4ZN5515.SQUARE.jpg http://www.instructables.com/files/deriv/FWZ/K6Y8/H4ZN5515/FWZK6Y8H4ZN5515.SMALL.jpg roberto.riggio Energino is a plug-load meter that measures the amount of power consumed by whatever DC electrical appliance is plugged into its. It was originally designed to monitor the energy consumption of simple networking devices such as Ethernet switches and WiFi access points, but it can be used to monitor ...
By: roberto.riggio

Continue Reading »]]> Sun, 22 Jul 2012 08:40:00 PDT http://www.instructables.com/id/Ohms-Law-1/ http://www.instructables.com/files/deriv/FY8/C2Y8/H3Z3KMTY/FY8C2Y8H3Z3KMTY.SQUARE2.jpg http://www.instructables.com/files/deriv/FY8/C2Y8/H3Z3KMTY/FY8C2Y8H3Z3KMTY.SQUARE.jpg http://www.instructables.com/files/deriv/FY8/C2Y8/H3Z3KMTY/FY8C2Y8H3Z3KMTY.SMALL.jpg simonfrfr Ohm's law is used to find current resistance or voltage in certain conditions. If you know what Voltage and Current you have and you are looking for the resistance then you use this equation. Resistance = Voltage/Current For looking for the Current Current = Voltage/Resistance For looking for the Vo...
By: simonfrfr

Continue Reading »]]> Sat, 30 Jun 2012 04:17:44 PDT http://www.instructables.com/id/Split-rail-power-supply-from-a-single-rail-supply/ http://www.instructables.com/files/deriv/FNL/P5CD/H3Z3UFRW/FNLP5CDH3Z3UFRW.SQUARE2.jpg http://www.instructables.com/files/deriv/FNL/P5CD/H3Z3UFRW/FNLP5CDH3Z3UFRW.SQUARE.jpg http://www.instructables.com/files/deriv/FNL/P5CD/H3Z3UFRW/FNLP5CDH3Z3UFRW.SMALL.jpg Harrymatic A split rail power supply is one with a positive voltage rail, a negative voltage rail and zero volts in the middle. This is a really simple but very handy circuit which will provide both a positive and a negative voltage from a single rail power supply. This circuit was originally from a fairly ol...
By: Harrymatic

Continue Reading »]]> Fri, 29 Jun 2012 14:54:29 PDT http://www.instructables.com/id/Simple-Voltage-Divider/ http://www.instructables.com/files/deriv/FVW/3GOA/H3XN8KFB/FVW3GOAH3XN8KFB.SQUARE2.jpg http://www.instructables.com/files/deriv/FVW/3GOA/H3XN8KFB/FVW3GOAH3XN8KFB.SQUARE.jpg http://www.instructables.com/files/deriv/FVW/3GOA/H3XN8KFB/FVW3GOAH3XN8KFB.SMALL.jpg DoctorDv When building a circuit, there may come a time when you only need a fraction of the voltage that is in the input.  Dividing this voltage is simple and requires a few basic components. You are going to need two resistors of the same value, and a battery.  The reason we are using two resistors of the...
By: DoctorDv

Continue Reading »]]> Wed, 27 Jun 2012 11:37:39 PDT http://www.instructables.com/id/Custom-Battery-Values/ http://www.instructables.com/files/deriv/F46/97EP/H3QF1CC2/F4697EPH3QF1CC2.SQUARE2.jpg http://www.instructables.com/files/deriv/F46/97EP/H3QF1CC2/F4697EPH3QF1CC2.SQUARE.jpg http://www.instructables.com/files/deriv/F46/97EP/H3QF1CC2/F4697EPH3QF1CC2.SMALL.jpg randofo When you put two battery holders in series, they add together to make one larger voltage. For instance, if you put a 4 x AA (6V) in series with another 4 x AA (6V) battery holder, then you are left with a combined value of 12V. If you were then to put a 2 x AA (3V) battery holder in series with both...
By: randofo

Continue Reading »]]> Mon, 25 Jun 2012 12:05:00 PDT http://www.instructables.com/id/How-to-build-a-spark-genarator/
How to build a spark genarator - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FG4/FA8D/H3NN9IYV/FG4FA8DH3NN9IYV.SQUARE2.jpg http://www.instructables.com/files/deriv/FG4/FA8D/H3NN9IYV/FG4FA8DH3NN9IYV.SQUARE.jpg http://www.instructables.com/files/deriv/FG4/FA8D/H3NN9IYV/FG4FA8DH3NN9IYV.SMALL.jpg bluemetaknight This is my first instructable so please no nasty comments. tools                                                         parts                                                                                                                             hot glue gun                                    ...
By: bluemetaknight

Continue Reading »]]> Wed, 20 Jun 2012 09:54:49 PDT http://www.instructables.com/id/How-to-Make-a-High-Voltage-Pulse-Shock-Box/ http://www.instructables.com/files/deriv/FC0/VC0W/H2WEYQQS/FC0VC0WH2WEYQQS.SQUARE2.jpg http://www.instructables.com/files/deriv/FC0/VC0W/H2WEYQQS/FC0VC0WH2WEYQQS.SQUARE.jpg http://www.instructables.com/files/deriv/FC0/VC0W/H2WEYQQS/FC0VC0WH2WEYQQS.SMALL.jpg nichropulse This pocket sized circuit is very similar to the muscle stimulators or a low power electric fence controller.   It features a fully adjustable pulse frequency and intensity!  It is powered by a standard 9V battery, and is extremely reliable.
By: nichropulse

Continue Reading »]]> Sun, 17 Jun 2012 10:13:23 PDT http://www.instructables.com/id/Attack-of-the-Killer-Strobes/
Attack of the Killer Strobes - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FBQ/4SJU/H3CS2JT7/FBQ4SJUH3CS2JT7.SQUARE2.jpg http://www.instructables.com/files/deriv/FBQ/4SJU/H3CS2JT7/FBQ4SJUH3CS2JT7.SQUARE.jpg http://www.instructables.com/files/deriv/FBQ/4SJU/H3CS2JT7/FBQ4SJUH3CS2JT7.SMALL.jpg Nano_Burger Who knows what evil lurks in the hearts of your camera flash units? Well, you should! Because it could be killing your camera! If you like to mix old and new technologies, you may want to put that 1980's vinatge camera flash unit on your 1990's vintage camera or even on spanking new digicam.  Well...
By: Nano_Burger

Continue Reading »]]> Sat, 16 Jun 2012 01:57:24 PDT http://www.instructables.com/id/2-sun-tracker-circuit/
$2 sun tracker circuit - healthy discussion! - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F25/FKN2/H2WEYL88/F25FKN2H2WEYL88.SQUARE2.jpg http://www.instructables.com/files/deriv/F25/FKN2/H2WEYL88/F25FKN2H2WEYL88.SQUARE.jpg http://www.instructables.com/files/deriv/F25/FKN2/H2WEYL88/F25FKN2H2WEYL88.SMALL.jpg gtoal My apologies to any of the 1400 or so people who've read this Instructable in the day since it was published; I described an idea I was sure would work, and I was so excited to get it out there where people could try it, that I didn't wait until I could get the parts I needed to fully test it myself...
By: gtoal

Continue Reading »]]> Thu, 14 Jun 2012 20:15:04 PDT http://www.instructables.com/id/How-to-Build-a-Slayer-Exciter/
How to Build a Slayer Exciter - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FI4/6FSJ/H2TJ4GZG/FI46FSJH2TJ4GZG.SQUARE2.jpg http://www.instructables.com/files/deriv/FI4/6FSJ/H2TJ4GZG/FI46FSJH2TJ4GZG.SQUARE.jpg http://www.instructables.com/files/deriv/FI4/6FSJ/H2TJ4GZG/FI46FSJH2TJ4GZG.SMALL.jpg Chip Fixes A Slayer Exciter is an air-cored transformer that steps up a very low DC voltage to a very high AC voltage. This creates an electromagnetic field around the coil that is capable of lighting up fluorescent and neon light bulbs. It is fairly similar to a Tesla Coil. The Slayer Exciter was the brainst...
By: Chip Fixes

Continue Reading »]]> Thu, 31 May 2012 15:01:42 PDT http://www.instructables.com/id/LED-experiment-choose-correct-resistor/ http://www.instructables.com/files/deriv/F43/4S1G/H2MYMDD6/F434S1GH2MYMDD6.SQUARE2.jpg http://www.instructables.com/files/deriv/F43/4S1G/H2MYMDD6/F434S1GH2MYMDD6.SQUARE.jpg http://www.instructables.com/files/deriv/F43/4S1G/H2MYMDD6/F434S1GH2MYMDD6.SMALL.jpg jgrecoarroyo Do you never know what is the correct resistor value for your LED? Do you need different resistor values depending on the LED? How can you calculate all this? It is very easy: this video will take you step by step and show you using a simple experiment how to solve all these questions. ...
By: jgrecoarroyo

Continue Reading »]]> Tue, 29 May 2012 09:08:30 PDT http://www.instructables.com/id/Voltage-Source-inside-a-gamecube/ http://www.instructables.com/files/deriv/F1I/VUEE/H231Z4BU/F1IVUEEH231Z4BU.SQUARE2.jpg http://www.instructables.com/files/deriv/F1I/VUEE/H231Z4BU/F1IVUEEH231Z4BU.SQUARE.jpg http://www.instructables.com/files/deriv/F1I/VUEE/H231Z4BU/F1IVUEEH231Z4BU.SMALL.jpg ero619 So our first circuits project was to build a power source, so my girlfriend and i decided to build it on a gamecube and add some extras besides the power source, like a usb port to charge almost any usb-rechargable electronic. The power source can give a voltage between 1V and 20V on the left burne...
By: ero619

Continue Reading »]]> Sat, 12 May 2012 00:50:11 PDT http://www.instructables.com/id/Make-a-cheap-disposable-camera-capacitor-bank/
Make a cheap disposable camera capacitor bank - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FPZ/2M76/H1JUJEYA/FPZ2M76H1JUJEYA.SQUARE2.jpg http://www.instructables.com/files/deriv/FPZ/2M76/H1JUJEYA/FPZ2M76H1JUJEYA.SQUARE.jpg http://www.instructables.com/files/deriv/FPZ/2M76/H1JUJEYA/FPZ2M76H1JUJEYA.SMALL.jpg Alex1M6 This instructable will show you have to make a simple capacitor bank and charger out of old disposable cameras that you can get for free at your local store. You can then use it for powering things such as coil guns or just blowing things up! See the second picture above? that was the spark created...
By: Alex1M6

Continue Reading »]]> Sat, 5 May 2012 08:20:34 PDT http://www.instructables.com/id/Precision-multimeter-calibration-reference/
Precision multimeter calibration reference - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FHB/PLEK/H0JBUS9P/FHBPLEKH0JBUS9P.SQUARE2.jpg http://www.instructables.com/files/deriv/FHB/PLEK/H0JBUS9P/FHBPLEKH0JBUS9P.SQUARE.jpg http://www.instructables.com/files/deriv/FHB/PLEK/H0JBUS9P/FHBPLEKH0JBUS9P.SMALL.jpg throbscottle WARNING / DISCLAIMER: If it ain't broke, don't fix it. Tampering with the settings inside your multimeter will void the warranty, could mess up it's accuracy permanently, risks causing mechanical failure, and could feasibly cause actual danger from high voltages. I accept no responsibility for any d...
By: throbscottle

Continue Reading »]]> Sat, 14 Apr 2012 14:56:14 PDT http://www.instructables.com/id/Reverse-Engineering-an-Electric-Fence-Charger/
Reverse Engineering an Electric Fence Charger - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SQUARE2.jpg http://www.instructables.com/files/deriv/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SQUARE.jpg http://www.instructables.com/files/deriv/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SMALL.jpg LargeMouthBass Reverse engineering something can be a great form of both entertainment and education.  I’ve often purchased items just for the satisfaction of disassembling them to determine how they function and how they are designed.  Along the way you can learn a great deal, improving your own design and debugg...
By: LargeMouthBass

Continue Reading »]]> Mon, 2 Apr 2012 10:56:00 PDT http://www.instructables.com/id/build-a-singing-ark-plasma-speaker-ongoing-proj/
build a singing arc (plasma speaker) (ongoing project) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FHL/WT6I/GZHJVURL/FHLWT6IGZHJVURL.SQUARE2.jpg http://www.instructables.com/files/deriv/FHL/WT6I/GZHJVURL/FHLWT6IGZHJVURL.SQUARE.jpg http://www.instructables.com/files/deriv/FHL/WT6I/GZHJVURL/FHLWT6IGZHJVURL.SMALL.jpg -max- this instructable will show you how to make a simple plasma speaker.  a plasma speaker (singing arc) is a device that generates a high voltage discharge that emits audiible music. all the sound comes from the ark or plasma.  How It Works. in this version, we will use the magic of PWM to create aud...
By: -max-

Continue Reading »]]> Mon, 13 Feb 2012 11:55:24 PST http://www.instructables.com/id/Solid-State-Tesla-Coil/
Solid State Tesla Coil - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FZT/PK0X/GTKFPXSS/FZTPK0XGTKFPXSS.SQUARE2.jpg http://www.instructables.com/files/deriv/FZT/PK0X/GTKFPXSS/FZTPK0XGTKFPXSS.SQUARE.jpg http://www.instructables.com/files/deriv/FZT/PK0X/GTKFPXSS/FZTPK0XGTKFPXSS.SMALL.jpg Michael Chen A solid state Tesla coil is one of the kinds of Tesla coils available. It has several advantages over the more common spark gap tesla coil. They are less louder than conventional Tesla coils, yet they can still achieve a respectable output. They can also be made to play music through its spark, whic...
By: Michael Chen

Continue Reading »]]> Mon, 6 Feb 2012 18:33:04 PST http://www.instructables.com/id/Make-a-240V-MOT-high-voltage-power-supply-with-120/
Make a 240V MOT high voltage power supply with 120V transformers - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FZK/MLCZ/GW9VCBCA/FZKMLCZGW9VCBCA.SQUARE2.jpg http://www.instructables.com/files/deriv/FZK/MLCZ/GW9VCBCA/FZKMLCZGW9VCBCA.SQUARE.jpg http://www.instructables.com/files/deriv/FZK/MLCZ/GW9VCBCA/FZKMLCZGW9VCBCA.SMALL.jpg Jimmy Proton I love to play with MOT's but the only breaker i have to power them off of it only rated for 15 amps, so i decided to see if I could power them off a 240V outlet my dad made for his welders and air compressor and sure enough, it works! So here i will show you how to make a great MOT power supply ver...
By: Jimmy Proton

Continue Reading »]]> Fri, 16 Dec 2011 20:47:03 PST http://www.instructables.com/id/awesome-MOT-power-supply/
awesome MOT power supply - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FYA/GMI2/GW88OQPF/FYAGMI2GW88OQPF.SQUARE2.jpg http://www.instructables.com/files/deriv/FYA/GMI2/GW88OQPF/FYAGMI2GW88OQPF.SQUARE.jpg http://www.instructables.com/files/deriv/FYA/GMI2/GW88OQPF/FYAGMI2GW88OQPF.SMALL.jpg Jimmy Proton This is a nice compact MOT power supply that I created, it uses two 120V MOT's and some other things that can easily be obtained, I built this entire thing for free out of stuff laying around in my house and from microwave ovens that I took apart. *A MOT can kill you instantly or give you a really ...
By: Jimmy Proton

Continue Reading »]]> Fri, 16 Dec 2011 20:44:44 PST http://www.instructables.com/id/External-device-control-ie-coffee-machine/
External device control (i.e. coffee machine). - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FZL/6YPT/GVOWSPJJ/FZL6YPTGVOWSPJJ.SQUARE2.jpg http://www.instructables.com/files/deriv/FZL/6YPT/GVOWSPJJ/FZL6YPTGVOWSPJJ.SQUARE.jpg http://www.instructables.com/files/deriv/FZL/6YPT/GVOWSPJJ/FZL6YPTGVOWSPJJ.SMALL.jpg Computothought Note: Try any or all of these at your own risk. I will not be responsible for any issues. Get a professional to help if you are unsure. The concept is that we take a controlling voltage from the computer or a micro-controller, which drives an electrically isolated circuit with Relay or Triac. Yo...
By: Computothought

Continue Reading »]]> Thu, 1 Dec 2011 10:05:40 PST http://www.instructables.com/id/The-Simple-Tesla-Coil/
The Simple Tesla Coil - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FWA/4PVA/GUKZRGX7/FWA4PVAGUKZRGX7.SQUARE2.jpg http://www.instructables.com/files/deriv/FWA/4PVA/GUKZRGX7/FWA4PVAGUKZRGX7.SQUARE.jpg http://www.instructables.com/files/deriv/FWA/4PVA/GUKZRGX7/FWA4PVAGUKZRGX7.SMALL.jpg MistaStokes This is a guide on how to build a medium sized Tesla coil. I built this one from parts I had laying around, all I had to buy was magnet wire, in all I spent less than $30! For those building their first coil, I would not suggest using this a standalone source of instructions. This is my first coil,...
By: MistaStokes

Continue Reading »]]> Fri, 4 Nov 2011 14:28:12 PDT http://www.instructables.com/id/Vacuum-bug-zapper/
Vacuum bug zapper! (Updated) - More DIY How To Projects]]> http://cdn.instructables.com/FUN/7ZU9/GUKZRLLL/FUN7ZU9GUKZRLLL.SQUARE2.jpg http://cdn.instructables.com/FUN/7ZU9/GUKZRLLL/FUN7ZU9GUKZRLLL.SQUARE.jpg http://cdn.instructables.com/FUN/7ZU9/GUKZRLLL/FUN7ZU9GUKZRLLL.SMALL.jpg Electorials Hello there, This is a little bug-zapper that works with a computer FAN and a CCFL inverter. The insects will get sucked-in and then get zapped by a 2kV arc :D It's powered by a 9V battery and is easy to use. The compact design also makes it mobile. A video of the zapper in action: Requirem...
By: Electorials

Continue Reading »]]> Thu, 3 Nov 2011 08:04:54 PDT http://www.instructables.com/id/2n3055-flyback-transformer-driver-for-beginners/
2n3055 flyback transformer driver for beginners - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F7H/4I4C/GYUY0RNN/F7H4I4CGYUY0RNN.SQUARE2.jpg http://www.instructables.com/files/deriv/F7H/4I4C/GYUY0RNN/F7H4I4CGYUY0RNN.SQUARE.jpg http://www.instructables.com/files/deriv/F7H/4I4C/GYUY0RNN/F7H4I4CGYUY0RNN.SMALL.jpg Alex1M6 Intro: This instructable will show you how to make a cheap and simple driver circuit in order to get high voltage arcs out of a component called a flyback transformer. A flyback transformer, sometimes called a line output transformer are used in older CRT TV's and computer monitors to produce the ...
By: Alex1M6

Continue Reading »]]> Tue, 20 Sep 2011 20:36:21 PDT