Instructables: exploring - technology - electronics - voltage - featured http://www.instructables.com Wed, 22 Oct 2014 18:40:00 PDT BLOX v1.01 add a digital meter to your old analogical variable PSU http://www.instructables.com/id/add-a-digital-meter-to-your-old-analogical-variabl/
add a digital meter to your old analogical variable PSU - More DIY How To Projects]]> http://cdn.instructables.com/FF2/3TAP/HQKMJBA9/FF23TAPHQKMJBA9.SQUARE2.jpg http://cdn.instructables.com/FF2/3TAP/HQKMJBA9/FF23TAPHQKMJBA9.SQUARE.jpg http://cdn.instructables.com/FF2/3TAP/HQKMJBA9/FF23TAPHQKMJBA9.SMALL.jpg andrea biffi My 20 years old variable power supply is beginning to have some imprecision in measuring voltage with his analogical meter. Then I decided to add a digital meter, with which I can know exactly the voltage supplied. Since these digital meters are very cheap this is a good solution for many devices ot...
By: andrea biffi

Continue Reading »]]>
Sat, 18 Jan 2014 07:25:25 PST
Smartphone Charger Powered by Fire http://www.instructables.com/id/Battery-Charger-Powered-by-Fire/
Smartphone Charger Powered by Fire - More DIY How To Projects]]> http://cdn.instructables.com/F12/HOAD/HFPTEVTJ/F12HOADHFPTEVTJ.SQUARE2.jpg http://cdn.instructables.com/F12/HOAD/HFPTEVTJ/F12HOADHFPTEVTJ.SQUARE.jpg http://cdn.instructables.com/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
Adjustable Voltage Step-up (0.7-5.5V to 2.7-5.5V) 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://cdn.instructables.com/F2K/RFE1/HFPT9HVQ/F2KRFE1HFPT9HVQ.SQUARE2.jpg http://cdn.instructables.com/F2K/RFE1/HFPT9HVQ/F2KRFE1HFPT9HVQ.SQUARE.jpg http://cdn.instructables.com/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
Thermoelectric Fan Powered by a Candle http://www.instructables.com/id/Thermoelectric-Fan-Driven-by-a-Candle/ http://cdn.instructables.com/FAL/IAK8/HEXSGBOS/FALIAK8HEXSGBOS.SQUARE2.jpg http://cdn.instructables.com/FAL/IAK8/HEXSGBOS/FALIAK8HEXSGBOS.SQUARE.jpg http://cdn.instructables.com/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
Battery voltage monitor http://www.instructables.com/id/Battery-voltage-monitor/
Battery voltage monitor - More DIY How To Projects]]> http://cdn.instructables.com/FUN/UMKM/H9G15QG0/FUNUMKMH9G15QG0.SQUARE2.jpg http://cdn.instructables.com/FUN/UMKM/H9G15QG0/FUNUMKMH9G15QG0.SQUARE.jpg http://cdn.instructables.com/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
Jacob's Ladder http://www.instructables.com/id/Jacobs-Ladder-1/
Jacob's Ladder - More DIY How To Projects]]> http://cdn.instructables.com/FZG/OPAE/H6WG6KCR/FZGOPAEH6WG6KCR.SQUARE2.jpg http://cdn.instructables.com/FZG/OPAE/H6WG6KCR/FZGOPAEH6WG6KCR.SQUARE.jpg http://cdn.instructables.com/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
Split rail power supply from a single rail supply http://www.instructables.com/id/Split-rail-power-supply-from-a-single-rail-supply/ http://cdn.instructables.com/FNL/P5CD/H3Z3UFRW/FNLP5CDH3Z3UFRW.SQUARE2.jpg http://cdn.instructables.com/FNL/P5CD/H3Z3UFRW/FNLP5CDH3Z3UFRW.SQUARE.jpg http://cdn.instructables.com/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
Make a cheap disposable camera capacitor bank 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://cdn.instructables.com/FPZ/2M76/H1JUJEYA/FPZ2M76H1JUJEYA.SQUARE2.jpg http://cdn.instructables.com/FPZ/2M76/H1JUJEYA/FPZ2M76H1JUJEYA.SQUARE.jpg http://cdn.instructables.com/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
Reverse Engineering an Electric Fence Charger http://www.instructables.com/id/Reverse-Engineering-an-Electric-Fence-Charger/
Reverse Engineering an Electric Fence Charger - More DIY How To Projects]]> http://cdn.instructables.com/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SQUARE2.jpg http://cdn.instructables.com/F68/5WLO/H0E0MQGK/F685WLOH0E0MQGK.SQUARE.jpg http://cdn.instructables.com/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
Solid State Tesla Coil http://www.instructables.com/id/Solid-State-Tesla-Coil/
Solid State Tesla Coil - More DIY How To Projects]]> http://cdn.instructables.com/FZT/PK0X/GTKFPXSS/FZTPK0XGTKFPXSS.SQUARE2.jpg http://cdn.instructables.com/FZT/PK0X/GTKFPXSS/FZTPK0XGTKFPXSS.SQUARE.jpg http://cdn.instructables.com/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
2n3055 flyback transformer driver for beginners http://www.instructables.com/id/2n3055-flyback-transformer-driver-for-beginners/
2n3055 flyback transformer driver for beginners - More DIY How To Projects]]> http://cdn.instructables.com/FXN/BJV2/HSG26RM1/FXNBJV2HSG26RM1.SQUARE2.jpg http://cdn.instructables.com/FXN/BJV2/HSG26RM1/FXNBJV2HSG26RM1.SQUARE.jpg http://cdn.instructables.com/FXN/BJV2/HSG26RM1/FXNBJV2HSG26RM1.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
Ignition Coil High Voltage Display http://www.instructables.com/id/Ignition-Coil-High-Voltage-Display/
Ignition Coil High Voltage Display - More DIY How To Projects]]> http://cdn.instructables.com/FV0/0D15/GPBD3EKM/FV00D15GPBD3EKM.SQUARE2.jpg http://cdn.instructables.com/FV0/0D15/GPBD3EKM/FV00D15GPBD3EKM.SQUARE.jpg http://cdn.instructables.com/FV0/0D15/GPBD3EKM/FV00D15GPBD3EKM.SMALL.gif LargeMouthBass A common automotive ignition coil can generate an output voltage on the order of 30,000 volts. This is a sufficient voltage to produce arcs which jump an air gap of an inch or more.  Driven properly they can also be used to create a Jacobs Ladder display Ignition coils are inexpensive and readily a...
By: LargeMouthBass

Continue Reading »]]>
Thu, 30 Jun 2011 16:15:43 PDT
How to make a fryback! http://www.instructables.com/id/How-to-make-a-fryback/
How to make a fryback! - More DIY How To Projects]]> http://cdn.instructables.com/FGK/K7BI/GP3T1YXA/FGKK7BIGP3T1YXA.SQUARE2.jpg http://cdn.instructables.com/FGK/K7BI/GP3T1YXA/FGKK7BIGP3T1YXA.SQUARE.jpg http://cdn.instructables.com/FGK/K7BI/GP3T1YXA/FGKK7BIGP3T1YXA.SMALL.jpg grenadier Here is an instructable on how to make a fryback, the kind of all flybacks! Materials needed include: Two large ferrite U cores. TSC international is my favorite place for getting ferrite cores.  Plenty of magnet wire, 28 gauge is preferred. Electrical tape, any color but black. Get th...
By: grenadier

Continue Reading »]]>
Sun, 19 Jun 2011 13:57:19 PDT
Variable Voltage Regulator - Filtered Linear Power Supply http://www.instructables.com/id/Variable-Voltage-Regulator-Filtered-Linear-Power/
Variable Voltage Regulator - Filtered Linear Power Supply - More DIY How To Projects]]> http://cdn.instructables.com/FGJ/32RV/GOHMAWZX/FGJ32RVGOHMAWZX.SQUARE2.jpg http://cdn.instructables.com/FGJ/32RV/GOHMAWZX/FGJ32RVGOHMAWZX.SQUARE.jpg http://cdn.instructables.com/FGJ/32RV/GOHMAWZX/FGJ32RVGOHMAWZX.SMALL.jpg Poent This Instructable will show how to Make a 1.6v-6v Filtered Linear Power Supply using a LM317 for the variable voltage regulator and a 1kohm Potentiometer (trimmer). It can source power from anywhere between 7v to 14v for this version of the power supply. The power supply in the above image is at the...
By: Poent

Continue Reading »]]>
Sun, 5 Jun 2011 19:52:44 PDT
How To Build A Simple But Powerful Flyback Driver http://www.instructables.com/id/ZVS-Driver/
How To Build A Simple But Powerful Flyback Driver - More DIY How To Projects]]> http://cdn.instructables.com/F1Q/Y5ZJ/G9NGUFUA/F1QY5ZJG9NGUFUA.SQUARE2.jpg http://cdn.instructables.com/F1Q/Y5ZJ/G9NGUFUA/F1QY5ZJG9NGUFUA.SQUARE.jpg http://cdn.instructables.com/F1Q/Y5ZJ/G9NGUFUA/F1QY5ZJG9NGUFUA.SMALL.jpg Plasmana Tired of little purple sparks? Want bigger hotter sparks? Then try:  The ZVS Flyback Driver It is probably the most powerful and efficient flyback transformer driver that was fairly recently invented by Vladmiro Mazilli. It uses resonant zero voltage switching (also know as ZVS) to drive the flyba...
By: Plasmana

Continue Reading »]]>
Wed, 2 Jun 2010 02:58:10 PDT
build a mini pole pig http://www.instructables.com/id/build-a-mini-pole-pig/
build a mini pole pig - More DIY How To Projects]]> http://cdn.instructables.com/FRS/T97I/GH4NN1U4/FRST97IGH4NN1U4.SQUARE2.jpg http://cdn.instructables.com/FRS/T97I/GH4NN1U4/FRST97IGH4NN1U4.SQUARE.jpg http://cdn.instructables.com/FRS/T97I/GH4NN1U4/FRST97IGH4NN1U4.SMALL.jpg Jimmy Proton I thought it would be cool to make a mini distribution transformer and one day i just happened to have all the supplies to make on so i decided to make an instructable on it. this is not a high voltage transformer, it runs off of the mains to whatever voltage/current the transformer you will be usi...
By: Jimmy Proton

Continue Reading »]]>
Tue, 30 Nov 2010 18:42:56 PST
Build a simple Marx Generator http://www.instructables.com/id/Build-a-simple-Marx-Generator/
Build a simple Marx Generator - More DIY How To Projects]]> http://cdn.instructables.com/FNL/Q3VY/FKD1KHJY/FNLQ3VYFKD1KHJY.SQUARE2.jpg http://cdn.instructables.com/FNL/Q3VY/FKD1KHJY/FNLQ3VYFKD1KHJY.SQUARE.jpg http://cdn.instructables.com/FNL/Q3VY/FKD1KHJY/FNLQ3VYFKD1KHJY.SMALL.jpg Plasmana Do you like the idea of tesla coils and other high voltage sparking stuff, but don't have the time, money or patience to build something that is elaborate? Well, here's a fun 'n' simple project that can make big, fat, noisy sparks at least 2 inches long, and can be built very quickly and cheaply. ...
By: Plasmana

Continue Reading »]]>
Tue, 26 Aug 2008 16:21:06 PDT