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Wednesday, August 07, 2019

Function Generator using the CA3140

Here is a complete project which will help in learning to apply the CA3140 in a small instrument that could be used in your test bench along with the oscilloscope. It is necessary to study the datasheet for understanding the device and this application with full details.

CA3140 4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output

"A function generator having a wide tuning range is shown in Figure 10. The 1,000,000/1 adjustment range is accomplished by a single variable potentiometer or by an auxiliary sweeping signal. The CA3140 functions as a non-inverting readout amplifier of the triangular signal developed across the integrating capacitor network connected to the output of the CA3080A current source."

Science Toys - Edutainment at Home

Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles.  - Creator - Simon Field

Science Toys - Edutainment at Home

This Website is a valuable resource for students to learn basics and get interested in electronics and computers - delabs

Science Toys - Edutainment at Home

Electromagnetism: - An electric motor in 10 minutes

The motor is simply a battery, a magnet, and a small coil of wire you make yourself. There is a secret to making it (which I will of course share with you) which is at the same time clever and delightfully simple.

Other Projects - Fun with High Voltage, A 10 minute railgun, A 30 second motor.
    Radio: A quick and simple radio

    The reason a crystal radio does not need any batteries is the amazing capabilities of the human ear. The ear is extremely sensitive to very faint sounds. The crystal radio uses only the energy of the radio waves sent by radio transmitters.

    Others are Building a radio in 10 minutes, Build a portable crystal radio, A radio out of household items, A simple AM transmitter, The Three-Penny Radio.
      Computers and Electronics: A Computer Controlled Transmitter

      In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card.

      More - A Free Space Laser Data Transmitter, Fun With Solderless Breadboards, A Simple 1 Watt Amplifier

        Electronics Product Design

        Product Design

        When you wish to Begin to learn Electronics, first a short study of Physics is essential, secondly some Electronics theory. Then build simple and small gadgets to learn Practical Electronics while working with Educational Hobby Circuits.  Lastly to make your own product designs, a fundamental knowledge of Analog and Digital Electronics is the foundation for your next steps into Engineering a Design.  

        Applications and Components

        The basic building blocks for most circuits are Chips or ICs. You can acquire considerable knowledge by studying Application notes to start with. When you want to use a Microprocessor or Build Your Own Microcontroller Projects, you can study the IC Datasheets and use an Evaluation Kit with Programmer. The Specifications and Behavior of Passive Components like inductors, capacitors and Resistors; Discrete Semiconductors; Power Devices. and RF Components have to be understood well, in order to design sturdy Industrial Grade Designs

        Electronics Product Design

        Advanced Engineering

        The Technology related to the equipment used for Testing, Troubleshooting and Calibration is called Test & Measurement, Here we use Test Instruments like Oscilloscopes and Digital Multimeters. Medical Electronics and Military Designs require more meticulous, robust and dedicated designs with higher reliability and accuracy. In Medical electronics product safety is vital, Consumer products should be affordable without compromising Human Safety factors. Then you need to look into Usability or Ergonomics, which is a science that helps us develop practical and cost-effective products, which have an optimum Man-Machine Interface. EMI, ESD, RFI are other important aspects that deals with Electromagnetic, Electrostatic and RF; Noise and Interference; in the Stable performance of products in Real World Harsh Environments or the Reliable Transmission of data.

        Lastly Computing and Communication makes products more versatile in any application. EDA, Technical Computing and Systems Engineering helps creating products and complete process solutions.

        Industrial Automation and Process Control

        Automation and Control is the predecessor of Robotics and Mechatronics. A Control system is made of Sensors sending acquired data to a Controller which operates Actuators to manage the process in Real Time. Starting from a Bimetal Thermostat to a SCADA, the controller has grown from mechanical -- electrical -- analog -- digital devices to microcontroller-computer based equipment.

        Both in Control Systems and Robotics the Collaboration between Robots or Control Units, leads to the development of wireless network of Interactive, Intelligent and Distributed Self Governing Systems. The outcome is Web Process Automation, Web Applications based Solutions in Monitoring, Analyzing and Configuring these Sophisticated Networked Systems.

        delabs design notes - First posted in the frontpage of "delabs circuits"  around 2002

        Thursday, July 18, 2019

        Electronic Educational Applets - Paul Falstad

        "These are some educational java applets I wrote to help visualize various concepts in math, physics, and engineering." - Paul Falstad - (now with HTML5 and Canvas)

        Electronic Educational Applets - Paul Falstad
        • Math and Physics Applets - MyPhysicsLab - Physics Simulation with Java.
        • Index of Circuit Examples - Demonstrates various electronic circuits.
        • Digital Filters - Filters digital signals and plays the output on your speakers.
        • Acoustic Interference Applet - Audio interference between your speakers.
        • Waveguide Modes Applet - Electromagnetic waves in a waveguide.
        • Antenna Applet - Generates antenna radiation patterns.
        Electronic Educational Applets - Paul Falstad

        Analog Circuit Simulator Applet - Demonstrates various electronic circuits.

        "This java applet (html5 now!) is an electronic circuit simulator.  When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage.  The gray color indicates ground.  A red color indicates negative voltage.  The moving yellow dots indicate current."

        Its advanced simulation engine can handle both analog and digital circuits and features real-time always-on analysis. It is the perfect companion to students, hobbyists, and engineers.

        Build any circuit, watch dynamic voltage, current, and charge animations. This gives you insight into circuit operation like no equation does. While simulation is running, adjust circuit parameters with, and the circuit responds to your actions in real time.

          Wednesday, July 17, 2019

 – Calculators and Tools

          " is dedicated to providing revolutionary ways for students, parents, teachers, and everyone to learn math. Combining educationally sound principles with proprietary technology, offers a unique experience that quickly guides the user to the solutions they need and the products they want. "

 - Calculators and Tools
          • Calculators and Tools
          • Math Practice
          • Formulas & Tables
          • Wonders of Math
          maths online is a project based at the University of Vienna, Austria, and is running since March 1998.

          delabs Technologies

          "An Engineer without some working knowledge of Maths is like a Plumber without a Pipe Wrench. Hobby Enthusiasts learn this science, even as they create and fix things."

          Math Jedica

          Educationists should have two approaches to Math. One the conventional, which is still in practice in many developing countries. The other, that is new, which is interactive, edutainment based, is needed for more than 60 % of the students.

          Elektrick the Power Jedi

          The brain works differently in various people, because there are mainly two types of brains. One is Predominantly Creative/Practical, the other is Analytical/Logical. Both types are present in each individual, one type is dominant; which define their learning abilities.

          When only a traditional approach is taken, many are deprived of a Mathematics Education. Educational Methods have to become realistic and innovate.