How to make a printed circuit board (PCB) using the UV light LED method. This instructable shows how to create well done PCB's using Ultraviolet light. It took us about 40 boards before we perfected our PCB, so we will share what worked and what didn't work. All the supplies can be bought from Fry's Electronics, Ace Hardware, Goodwill, Radio Shack, and Ebay . Our PCB tested the Atmel 208 pin PQFP Integrated Circuit (it may not look like it from the poor image quality but there were no shorts between all 208 pins! The materials needed are as follows. PCB: -Transparencies (MG chemicals brand ) -UV Presensitized Copper Clad Boards (MG chemicals brand ) -Laser printer (Brother HL-2070N) -200 UV LEDs (Bought from Ebay - Asia Engineer, seller giorgio11185. 5mm size, 3.4~3.8 forward voltage, forward current 20 mA, wavelength (nm) 395-400-405, view angle about 25 degrees.) -200 470 ohm resistors (included with Asia Engineer LEDs bought on ebay.
OpenDSS Online Software AVX Spice Software ► PSpice Models Tantalum & Niobium Oxide Capacitors for OrCAD & MicroSim CAD software AVX has provided software SPICE models of popular tantalum and niobium oxidecapacitors. A technical paper is available which outlines how to use these models and discusses some of the specific features which have been included in the SpiTan 3 updated package. Symbols are provided for each part type manufactured by AVX. ► RF/Microwave S-Parameters and Models AVX offers s-parameters for all of the RF/Microwave products that are offered. AVX also works with several of the most popular software vendors to ensure our products are up to date in their software, and are constantly working with new vendors to ensure that they have the most up-to-date AVX libraries. ► Spi2MM (Hard Metric Connectors) Spi2MMHM is an online Engineering tool that allows advanced circuit simulation for AVX series 7200 male and female 2MM Hard Metric connectors ▼ Spice models for Spi2MMHM software ► SpiCALCI 8.0 ► SpiMic
Labcenter Electronics : Proteus VSM - SPICE Co-Simulation/Debugging for PIC,8051,AVR,HC11 and ARM The VSM Advantage The Proteus Design Suite is wholly unique in offering the ability to co-simulate both high and low-level micro-controller code in the context of a mixed-mode SPICE circuit simulation. With this Virtual System Modelling facility, you can transform your product design cycle, reaping huge rewards in terms of reduced time to market and lower costs of development. If one person designs both the hardware and the software then that person benefits as the hardware design may be changed just as easily as the software design. In short, Proteus VSM improves efficiency, quality and flexibility throughout the design process.. What is Proteus VSM? Proteus Virtual System Modelling (VSM) combines mixed mode SPICE circuit simulation, animated components and microprocessor models to facilitate co-simulation of complete microcontroller based designs. Schematic Entry Proteus VSM uses our proven Schematic Capture software to provide the environment for design entry and development. ffullscreen
OscilloPhone: Use your Smartphone as an Oscilloscope / Signal Generator The Electronic Circuit of this project is composed of 4 parts: 1. The power supply circuit 2. The Oscilloscope input circuit 3. • The power supply circuit To support and process sinusoidal signals, the OP Amplifiers in the system need to be supplied with asymmetric voltages. The capacitors C1, C2 and C3 are used to avoid voltage drops when a high current is requested from an output. • The Oscilloscope input circuit The actual Oscilloscope input circuit is a slightly modified version of the chipstein's circuit in his "Preamplifier for Smartphone Oscilloscopes", where I changed a few of the resistor and the capacitors values. First, the 1µF capacitor blocks any DC input and then the potentiometer adjusts the signal attenuation. An OP amplifier in unity-gain buffer mode receives the attenuated signal, and adjusts the high impedance circuit. The 100 Ω resistor and the bipolar LED limit the voltages reaching the phone to about ±1.8 V, and also warn you when signals higher than that are present.
GLEAM Simulator The GLEAM Simulator system consists of the GLEAM Server and the GLEAMviz Client application. The GLEAM Server uses GLEAM as the engine to perform the simulations. This server runs on high-performance computers managed by the GLEAM project. The GLEAMviz Client is a desktop application through which users interact with the GLEAM Server. You can install and test a public version of the GLEAMviz desktop application on your computer today! The GLEAMviz desktop application is the main interface through which users interact with the GLEAM engine. Simulation Builder Before putting the GLEAM engine to work, you must first define the epidemic model and configure the simulation scenario. Simulation Manager Once defined, simulations can be submitted to the GLEAM engine that then performs the complicated statistical calculations. Visualisation and analysis GLEAMviz offers three types of visualization. The following movie demonstrates the animated visualisation of the epidemic spreading over time.
National Solar Panel Testing Shunt Regulator I designed the Solar Panel Testing Shunt Regulator to function as a variable voltage shunt regulator for measuring the power output of small solar panels. I wanted to be able to load the output of a solar panel with a variable load to obtain various output voltage levels and measure the corresponding current flow. Repeating current measurements at various voltage levels to characterize a solar panel without having the output voltage level drift. The shunt regulator has a two position range switch. A high range where the shunt regulator starts to conduct at about 28 volts at the minimum shunt setting and a low range that the shunt regulator starts to conduct at about 15 volts with the minimum shunt setting. Both ranges can shunt the solar panel to less than about 1 volt at the maximum shunt setting but the low range has a finer voltage adjustment. Here are the measured voltage levels at full shunt and the corresponding current levels for this unit.
Virtual Laboratory Environment Wireless electricity transmission circuit So to make this circuit you will need: 1) NPN Transistor. I used 2N3904 but you could use any NPN transistor. 2) Magnet wire or insulated wire. 3)Resistor 1 Kilo Ohm. 4) L.E.D light . 5) A 1.5 Volt AA Battery . ( Do not use batteries of higher voltage unless you want to damage your transistor.) Tools needed: 1) Scissors or knife. 2) Soldering Iron (Optional). 3) Lighter (Optional).
simuPOP RF field strength meter | Electronics Repair And Technology News A simple and easy project for a rainy Sunday! Why would you need one? Sometimes we build electronic projects for fun only, or just for satisfying our technical curiosity; this is what I do sometimes. This project, however, started with a need. The need originated when a friend called for help to solve an intermittent problem with the UHF transceiver on his boat. The receiving ends reported frequent cuts in his transmission. I quickly improvised a very simple Field Strength Meter composed of a small antenna, a detector diode, a resistor, capacitor and a Micro Ammeter. From there, the technical curiosity took over; what if we could improve the circuit, making it more sensitive and, how high in frequency it would still work? I gave up (at least temporarily!) And here we go; we have a very simple instrument that can detect the activity of your Wi-Fi router, your mobile phone and about any RF transmitter through a wide range of frequencies. Fig. 1 Schematic diagram Fig 2. Fig 3. Fig 4.
Vital Sign Simulator Do ACLS-Scenarios with just a cheap CPR-manikin and this free software! No costly high-fidelity-manikin or monitor/defibrillator needed! The vital sign simulator is intended for use in medical emergency training simulations. In combination with a (cheap) cpr-manikin, it offers a low-cost alternative to commercial high-tech patient simulation manikins. It is used with a pc and a dual monitor system: One monitor with controls for the operator and one providing the vital signs to the trainees. Heart rate, oxygen saturation, respiratory rate, blood pressure and various moving ecg-samples can be set and changed at any time by the operator. Requirements Hardware 1 PC or Notebook with dual-monitor-capability1 additional Monitor, attached to PC or Notebook (one monitor for the operator, one for the trainees)1 additional keyboard or 1 additional mouse, attached to PC or Notebook (one keyboard/mouse for the operator, one for the trainees)1 Set of stereo-pc-speakers with seperable speaker-boxes Setup
HOW-TO: Build 3D models from Eagle files Overview Over the last few weeks we’ve been building 3D models of our projects in Google SketchUp using the EagleUp script. This script makes a 3D model of the board from Cadsoft Eagle board (.brd) files, and populates it with pre-existing models of components. Once you have a 3D model in SketchUp you are free to evaluate it, build custom enclosures around it, or interface your model with others. Be advised that to build full 3D models of your projects you will have to have models for all your components. Download and Setup There are a few apps you’ll need for everything to function properly. Once you have downloaded everything, install SketchUp and ImageMagick. Extract the EagleUp archiveMove the ”EagleUp_export.ulp” file to the ULP folder located in the Eagle installation folderMove the ”EagleUp_import.rb” file to the Plugins folder in the Google SketchUp installation folderMove the models folder anywhere you like, but remember where it is. Hit OK. Now open the board you want to model.