Index
Miscallous Electronics Links
- A metal that melts in hot water Rate this link
- An Inexpensive X-ray Machine - This document describes how to make a small X-ray machine from an old radio tube, some copper wire, and other inexpensive materials. Warning: Playing carelessly with X-rays can be very dangerous to your health. Rate this link
- An Inexpensive X Ray Machine - This document describes how to make a small X-ray machine from an old radio tube, some copper wire, and other inexpensive materials. Warning: Playing carelessly with X-rays can be very dangerous to your health. Rate this link
- Barry's Magnetic Levitation Rate this link
- Building simple heat engines Rate this link
- Let's Build a Can Stirling Engine - The Can Stirling engine can rotate using a candle as the heat source. This engine is constructed with very simple materials. There are a can, a balloon, a wood board and others. Rate this link
- E.S.P. Conjuring Trick - magic trick circuit Rate this link
- Fun Science Gallery - Here you will find instructions showing you how to build scientific equipments from relatively cheap materials. Projects include instructions for making telescopes, microscopes, batteries, sidereal indicators, and several other instruments. Rate this link
- Fun Things to Do with Microwave Ovens Rate this link
- Fun with neodymium magnets - Neodymium Iron Boron (NIB) magnets are extremely powerful, and allow effects to be seen that aren't possible with normal iron or ferrite magnets. Rate this link
- Fun with Plasma - some experiments with xenon flash tubes Rate this link
- Funny things to do with your microwave oven Rate this link
- Gauss gun Pskov 1100. True coilgun pistol. - Site about coilgun pistol Pskov-1100. This experimental soundless electromagnetic launcher. Many photos, know-how and circuits. Rate this link
- High School Teachers at CERN: New ways of Doing Familiar Experiments - foam chamber, cloud chamber, spark detector, radioactivity, geiger-mueller tube building, spectroscopy, molecule measurements Rate this link
- How to Build Home Made Laser Power Output Meter Rate this link
- How to Build Home Made Spectroscope - Find a cardboard box - a shoe-box would be fine but maybe a little big. Select a CD (a blank re-writable would be fine) Mount it on the bottom of the box, leaning up against a side at about 45 degrees. And you have a simple spectroscope. Rate this link
- Jacob's Ladder (Climbing Arc) Construction - A Jacob's Ladder is the type of high voltage display seen in many old (and usually bad) sci-fi movies. Here is info on a common type that is easy to construct with readily available parts. Rate this link
- How Van de Graaff Generators Work - Most of us have seen the device, known as a Van de Graaff generator, that makes your hair stand on end. The device looks like a big aluminum ball mounted on a pedestal. Have you ever wondered what this device is, how it works, why it was invented, or how you might build one yourself? Rate this link
- Jochen's High Voltage Page Rate this link
- Kirlian Photography - Kirlian photography is a high voltage, contact print photography. The process is simple. Rate this link
- Kirlian Photography Page - what we may see in an electrophotography is the Kirlian Effect : the modification of the electric discharge around the object due to biological alterations of the electrical parameters of the specimen Rate this link
- Lateral Science - : From Victorian Nitrogen Laser to Galvanic Experiments on the Dead Body of a Criminal,.....there should be something of interest for anyone with a scientific inclination at this site. Lots of material from old books. Rate this link
- Magnetic Gun - Article describes circuit for a miniature magnetic gun. When optimally tuned, it will propel a small slug about 1.5 metres high, or 2.5 metres horizontally. Rate this link
- Magnon Lasers - discussion group is to familiarize engineers, students, professors, etc. with magnon lasers, laser like RF signal sources Rate this link
- Mike's Electric Stuff - contains many experiments Rate this link
- Nitinol - Shaped Memory Alloy - Nitinol is an alloy of nickel and titanium that belongs to a class of materials call shaped memory alloys (SMA). SMA's have interesting mechanical properties. Nitinol for example contracts when heated, which is the opposite of what standard metals do when heated (expand). Not only does the alloy contract, but also it produces a 100 times greater thermal movement (expansion, contraction) than standard metals. Rate this link
- Railgun Blog - This web blog has information on one rail gun project Rate this link
- Sam Barros' Powerlabs - tesla coils, high voltage experiments, microwave, chemistry, cryogenics Rate this link
- Science demonstrations Rate this link
- Science Fair Project Ideas Rate this link
- Science Toys You Can Make With Your Kids - Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles. Rate this link
- Techmind.org - Techmind.org a site devoted to sharing my enthusiasm and knowledge of various aspects of science and technology. This site has circuits and projects on using soundcard as measurement device, homebrew video hardware, ADC, RS-232 and science experiments. Rate this link
- Unwise Microwave Oven Experiments Rate this link
- Electromagnetism Experiments - Building an electric motor in 10 minutes, Fun with high voltage and Building a railgun in 10 minutes Rate this link
- Microwave plasma - modified microwave oven can be used to produce plasma in all kinds of gas discharge/ incandescent lamps Rate this link
- Fluorescent tube in a Microwave - video on the experiment Rate this link
- The Free Information Society Projects Rate this link
Amateur science experiments
"In the matter of physics the first lessons should contain nothing but what is experimental and interesting to see. A pretty experiment is in itself often more valuable than twenty formulae extracted from our minds." - Albert Einstein Here you will find instructions showing you how to build scientific equipments from relatively cheap materials. This section deals with all kinds of experiments an amateur scientistcan do. Some of the projects listed here are more dangerous than someother experiments.Some of the experiments listed on the sites below are very dangerous. Use your common sense before attenmpting to do anything. Never forget that YOU are at all times responsible for your own actions and safety, despite what your political masters would have you believe. Children should NEVER attempt these things!
- Jacob's Ladder - high voltage spark effect seen on many old horror movies Rate this link
- Tesla coil pictures Rate this link
- Transmission of Electrical Energy Withtout Wires by Nikola Tesla as communicated to the Thirtieth Anniversary of the Electrical World and Engineer, March 5, 1904 Rate this link
High voltage experiments
This section deals with interresting test you can do with high voltage.Warning: High voltage experiments are potentially very dangerous.They should be only made by persons who know exactly what they are doing and do it safely. High voltage power supply can easily kill you if you do mistakes with it.
- Adventures in amplified GPS antenna construction; an experiment... Rate this link
- Common NMEA Setence types Rate this link
- An Inexpensive External GPS Antenna - If you operate APRS or just need an external antenna for your GPS receiver, here?s one that is easy to build yet offers surprisingly good performance in a compact size. Best of all, it uses commonly available components and materials. Rate this link
- Embed GPS to pinpoint your product's position - New government directives and low-cost hardware promise to spark renewed interest in embedded GPS products over the next few years. Make sure you understand the fundamentals of this important technology. Rate this link
- Installation guidelines for static GPS Antennas - what type of antenna and where to install it Rate this link
- NMEA-0183 and GPS Information - directory of marine, GPS, and NMEA related files and links Rate this link
- NMEA Information Files - The text files in this site contain information on the NMEA-0183 data interface used for marine instruments, GPS receivers, etc. Rate this link
- SA Watch - SA Watch software allows you to monitor and analyze the wandering that your GPS receiver appears to do when it is at a fixed location. Rate this link
- STB5600 - single chip GPS receiver Rate this link
- Time, position, and velocity? Just ask your GPS chip set - GPS is poised to invade everything from cellular phones to backpacks with new chip sets that implement a complete receiver using just two ICs plus memory Rate this link
- U.S. Coast Guarf Navigation Center - information on GPS navigation Rate this link
- Zero in: GPS options expand with applications - The reinforcing cycle of smaller, lower cost, lower power GPS electronics is feeding, and fed by, an expansion of diverse applications. Rate this link
- Low Cost DGPS - The aim of this project is to produce a hardware and software solution to allow real time DGPS by transmitting error data via TCP/IP and other means and post processed DGPS (ideal for surveying application). Rate this link
GPS
GPS (Global Positioning System) is a satellite based location system which works around the earth. You'll find an extraordinary and diverse range of GPS applications as it becomes both simpler and cheaper to add satellite-based locations. GPS sensitivity is a complex subject. Receiving the position information form satellites is a complicated task. The jobs of a GPS receiver are to identify as many GPS signals as possible from the separate satellites and to obtain a precise time of arrival for the start of the code sequence for each one. This code-sequence time is measured relative to the receiver's internal clock. The microwave signal strength itself is at best very low. With a typical received signal of approximately -130 to -140 dBm, the GPS receiver identifies the signal in the noise by comparing it with the expected PRBS in a correlator. When the signal is received and decoded, you need to do geometrical calculations to compute position. To grossly oversimplify, they involve solving time-of-flight measurements from three satellites with known positions for a 2-D fix and four or more satellites for a 3-D fix to yield a position for the receiver, once you convert the time-to-flight data to distance. Vendors are focusing on the E-911 locating mandate for cellular phones, which requires that cell-system operators be able to identify with high confidence and accuracy the location of a phone. Thus, improving the basic sensitivity of GPS is perhaps the single biggest story in emerging chip sets. Early GPS receivers had a single signal processing channel that wasswitched (multiplexed) between the various satellites the receiver wasusing to compute a fix. If a satellite went out of view momentarilywhen the receiver was trying to get data from it, the receiver couldlose the fix, and take some time re-acquiring satellites.Current receivers have multiple processing channels (often 12), sothey can process data from multiple satellites simultaneously, andwill usually have data from more satellites than are really needed tocompute a fix. This makes the fix more accurate, and tolerant of lossof signal from one or two satellites.
- 19" RACK system information - rack system measures Rate this link
- Counterintelligence and Counterterrorism WWW Page - information about surveillance and countersurveillance, Everything You Ever Wanted To Know About TSCM and Bug Detection Rate this link
- How copier works Rate this link
- How Lock Picking Works - The main reason we use locks everywhere is that they provide us with a sense of security. But in movies and on television, spies, detectives and burglars can open a lock very easily, sometimes using only a couple of paper clips. Is it really possible for someone to open a lock so easily? Rate this link
- Photocopier Theory - pdf file Rate this link
- Ultrasonic cleaner schematic Rate this link
Hitech hardware
- Muscular Bio-Stimulator - This is a small, portable set, designed for those aiming at look improvement. The Bio-Stimulator provides muscles' stimulation and invigoration but, mainly, it's an aid in removing cellulitis. Rate this link
- Tick, tick, tick - Cardiac pacemakers do a lot more than just tick. Rate this link
Biodmedical electronics
- Circuit takes square root of input voltage - For an NMOS transistor operating in the saturation region, the relationship between the drain current, ID, and the gate-source voltage, VGS, is governed by the square-law equation. By using a suitable transfer function you can make a circuit take the square root of an input voltage. Such an implementation uses an NMOS transistor to obtain the square root of a positive input voltage. Rate this link
- Circuit forms efficient cosine calculator - This circuit converts a ?10V analog voltage representing an angle between MIN and MAX and emits a voltage equal to 10 cos angle. This circuit can have an accuracy of better than 1% over ?120? or better than 0.2% over ?90?. Rate this link
- Don Lancaster Articles Rate this link
- Doorphone Intercom Rate this link
- Eg3 Hi-Tech Marketing Guide Rate this link
- Electronic Stun Gun Devices - There are several different types of electronic stun devices on the world market. The majority of them hail from the USA and work on similar priciples of using high voltage low amperage current. This is general introduction to those devices. Rate this link
- Electronic Texts - hacker text, lockpicking, Amiga documentation Rate this link
- E.S.P. Conjuring Trick - magic trick circuit Rate this link
- Flight-data recorders: Orange is good, black is bad - When a flight goes wrong, the cockpit voice recorder and the flight data recorder provide investigators with evidence to establish what happened on the flight deck and in the plane before the accident. Rate this link
- How Lock Picking Works Rate this link
- Program generates Braille dot code - The Basic training program helps visually handicapped people easily learn Braille dot code with the help of a trainer. The trainer generates six-pin Braille code using six solenoids operating on an LPT1/2 either by directly connecting the low-power solenoids to the data bits of the parallel port or by driving solenoid pins (pull-out type) using an UN2003 power driver. ush-in type solenoids require complemented (0 for 1 and 1 for 0) Braille-code data bits or an extra inverter on the LPT1 port. The user directly senses the Braille code using the six solenoid pins. These pins are also useful for punching the coded characters on paper. The trainer doesn't need to know the Braille code; he or she can generate code by simply typing plain English characters for the desired Braille code. Rate this link
- Schmitt trigger has dynamic threshold Rate this link
- Two-quadrant analog multiplier uses no log amps - You usually obtain the product of two values by summing the outputs of logarithmic amplifiers. Thist article shows a configuration that produces a two-quadrant product of analog signals but uses no log amplifiers. Rate this link
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