Système canadien de référence spatiale - Calcul inverse géodésique Démonstration en ligne News: CGVD2013 is now available! Natural Resources Canada has released the Canadian Geodetic Vertical Datum of 2013 (CGVD2013), which is now the new reference standard for heights across Canada. This new height reference system is replacing the Canadian Geodetic Vertical Datum of 1928 (CGVD28), which was adopted officially by an Order in Council in 1935. Geodetic reference systems stem from the need to provide a consistent and integrated reference surface for data analysis. This site provides end-users with the geodetic data and tools they need for a range of commercial and private uses. Date modified:
Tutorials New! Getting Started with LTspice LTspice is a high performance SPICE simulator, schematic capture and waveform viewer with an impressive library of passive devices. RFID Basics An overview of Radio Frequency Identification (RFID) technology. LIS3DH Hookup Guide A guide to connecting the LIS3DH to a microcontroller and using the Arduino library. Lessons in Algorithms Learn techniques on how to use Finite Impulse Response (FIR) filters and other data-processing tools to turn data into information. Illuminated Mask Use LilyPad LEDs, a switched battery holder, and coin cell battery to make a fun light up mask for your next costume party. Glowing Pin Create a quick and easy piece of e-textile art using a LilyPad LED, battery holder, conductive thread, and coin cell battery. Light-Up Plush Craft a light-up plush with LilyPad LEDs controlled by pressing a button and sliding a switch in the creature's hands. Looking for the old, archived tutorials?
Weller Magnastat Autopsy and Repair » Code and Life Immediately after soldering together my USB password thingy, my solder iron, the family heirloom Weller Magnastat stopped working. Some investigation showed that the base station was providing 24V AC voltage just fine, so I decided to unassemble the handpiece to see if something could be done. Here’s what I found: It turned out my iron was salvageable; read on to learn a bit about the Magnastat and how I was able to repair mine. Magnastat basics The construction of the device is surprisingly simple (see this image): The first (blue) wire from A/C power unit goes straight to the heating element (first red wire with black tube around it). A long tube goes “out” the handle part into the iron tip, and the tip is placed at the head. Note that in my model the tip and the magnastat are one solid piece (magnastat is in the base of the tip), newer models have a separate magnastat and tip, and you can change the target temperature just by changing the magnastat part. Reviving the old Weller
Learn About Electronics - Home List of single-board computers One of the first 10 MMD-1s, a prototype unit, produced by E&L Instruments in 1976. The "dyna-micro"/"MMD-1" was the world's first true single board computer. The MMD-1 had all components on a single printed circuit board, including memory, I/O, user input device, and a display. Nothing external to the single board except power was required to both program and run the MMD-1. The original design of the MMD-1 was called the "dyna-micro", but it was soon re-branded as the "MMD-1" List of single-board computers – computers built on a single circuit board, with microprocessor(s), memory, input/output (I/O) and other features required of a functional computer. ARM based Other board ARM9, ARM11 Cortex-M3 Cortex-M4 MYD-LPC435X EVM for NXP LPC4350/4357 ARM Cortex-M3 microcontrollers designed by MYIR Freescale i.MX OMAP Rabbit/Z80 Rabbit SBC Signetics 2650 ST-Ericsson NovaThor Snowball – ST-Ericsson Nova A9500 Xilinx Zynq P-Cubed
Learn Electronics Online | Easily master the basics of electronics theory and practice WHAT IS ELECTRICITY? Many people have asked me, "What is Electricity"? It's a great question. I get really excited when I think of all the latest technical advances in electronics. You see electricity in action all around you. So, what is electricity? Simply stated, electricity is the movement of electrons through a conductor. Atoms are the building blocks of all matter. Some materials are made up of atoms that have so many electrons circling around the nucleus that each atom is able to give up one or more electrons very easily. Metals like copper, gold and aluminum make excellent conductors of electrons. Other materials are made up of atoms that do not like to share electrons. Plastic, glass and paper are good examples of insulators. In order to get electrons to move through a conductor, such as a copper wire, it is necessary to apply opposing forces of energy to each end of the wire, a positive force to attract electrons from the wire and a negative force to give back electrons to the wire.
basic electronics LAST MODIFIED: Wednesday, 18-Mar-2015 17:25:56 PDT Authored by Ian C. Purdie VK2TIP Find us on Google+ •NEW! The navigation bar to the right is a very comprehensive list of topics in basic electronics and is listed in a suggested order. Following a lot of requests from newcomers I have provided a separate page called "starting out in basic electronics". If you want a reasonably good grounding don't forget to review electron theory and atoms this is the very basis of electronics. This chapter basic electronics is the most important of all for newcomers. Here you should gain a full understanding of basics electronics. You must have a good grasp of ohms law, an understanding of power, voltage, current and resistance. Capacitance, inductance as well as reactance which leads on to impedance and "Q". Very popular basic electronics topics are impedance matching and the wide variety of transformers ranging from power transformers, audio transformers and wide band rf transformers. NEW!
Electronica Aprender Facilmente Electrónica Electronica Basica Tutorial para aprender la electrónica básica desde cero para principiantes. Conceptos Básicos de Electronica. Resistencia Electrica ¿Qué es la resistencia eléctrica? Semiconductores ¿Qué son?. Union PN Semiconductores Aprende fácilmente la unión de un semiconductor P con un N para formar el diodo. Diodo Las bases prácticas de los diodos semiconductores. Diodo Zener Funcionamiento, Características, Circuito Básico y Tipos. Diodo Led ¿Cómo es un diodo Led? Condensador Que es, funcionamiento, carga y descarga, circuitos y tipos de condensadores. Potenciometro Qué es, com funciona, tipos y circuitos con potenciometro Rectificador de Media Onda Entra y Aprende Facil el Rectificador de Media Onda. Tiristor Entra y Aprende Facilmente el Tiristor. Triac Entra y Aprende de Forma Fácil todo sobre el Triac componente electrónico. Display Aprende que son los display, como se conectan, para que sirven, circuitos, el display de 7 segmentos y display screen. inCompartir
ElectronicosOnline.com Magazine | Curso Electrónica Basica 1 entrega Los objetivos de este primer tema serán los siguientes: Conocimiento de las leyes básicas de la electrónica.Que el usuario sea capaz de definir una fuente ideal de tensión y una fuente ideal de corriente.Ser capaz de reconocer una fuente de tensión constante y una fuente de corriente constante.Aplicación de los teoremas Thévenin y Norton para sustituirlos frente a una carga resistiva.Ser capaz de explicar dos características sobre los dispositivos en circuito abierto y en cortocircuito.Conocimiento general de las averías posibles en circuitos electrónicos.Saber la aproximación necesaria a utilizar en los diferentes análisis. Ley de Ohm Leyes de Kirchhoff Ley de Kirchhoff de tensiónes Ley de Kirchhoff de corrientes Resistencias Resistencias en serie Resistencias en paralelo Generadores Generadores de Continua Generadores de Alterna Aparatos de medición Voltímetro Amperímetro Óhmetro Ley de Ohm Cuando una resistencia es atravesada por una corriente se cumple que: Leyes de Kirchhoff Resistencias en serie
How voltage, current, and resistance relate : Ohm's Law An electric circuit is formed when a conductive path is created to allow free electrons to continuously move. This continuous movement of free electrons through the conductors of a circuit is called a current, and it is often referred to in terms of "flow," just like the flow of a liquid through a hollow pipe. The force motivating electrons to "flow" in a circuit is called voltage. Voltage is a specific measure of potential energy that is always relative between two points. When we speak of a certain amount of voltage being present in a circuit, we are referring to the measurement of how much potential energy exists to move electrons from one particular point in that circuit to another particular point. Free electrons tend to move through conductors with some degree of friction, or opposition to motion. The "symbol" given for each quantity is the standard alphabetical letter used to represent that quantity in an algebraic equation. What is the amount of current (I) in this circuit?