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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

    Math.com – Calculators and Tools

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

    Math.com - 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.

    Thursday, July 11, 2019

    Measurement Basics at National Instruments

    For an T&M Learning, Start with these tutors of NI. Like Analog Amplifier Circuits and Analog RC Filters. RF and Microwave Fundamentals if you want to be good at Communication Technologies. Sensor, DAQ and Instrument Fundamentals for Industrial Automation Learning.

    Measurement Fundamentals - National Instruments

    National Instruments Wi-Fi DAQ devices combine IEEE 802.11 wireless or Ethernet communication, direct sensor connectivity, and the flexibility of NI LabVIEW software for remote monitoring and control of electrical, physical, mechanical, and acoustical signals.

    Measurement Basics at National Instruments

    NI Wi-Fi DAQ features and to learn how you can simplify wireless remote measurements without compromising on the security or performance of a cabled data acquisition solution.

    delabs Notes

    You can learn about every niche/domain in Electronic Technologies. You also need to Specialize in a niche which resonates within you. The skill sets need to be broad, in case you find less opportunities in the specialization you have. This keeps changing all the time.

    Monday, June 17, 2019

    Reference Charts RF µWave Communications - Anritsu

    These charts provide Band Designation, RF Measurements Conversion Tables, RF Spectrum Bands, RF Connector Comparison Tables, S-Paramaters, the Electromagnetic Spectrum, Waveguide Designation,

    Power to Voltage Conversion, Spectrum Analyzer Conversion Factors, SWR ñ Reflection Coefficient ñ Return Loss, Power Measurements, Amplitude Modulation, Pulse Modulation, Frequency Modulation, and Bessel Functions. From - Anritsu Reference

    Reference Charts RF µWave Communications - Anritsu

    Reference Charts for RF & µWave Communications - Anritsu

    "Conversion tables for return loss, reflection coefficicient, and SWR with values for interaction of a small phasor (utility reference) expressed in dB related to the reference.

    In microwave circuit design S-parameters are very useful for the full characterisation of any 2 port network. In contrast to z,y and h-parameters, which require broadband short circuited and open circuited connections at the TEST ITEM for the measurement,

    S-parameters are determined with input and output terminated with the resistive characteristic impedance of test systems (generally 50 ohms in a coaxial line system). Parasitic oscillations in active devices are minimised when these devices are terminated in resistive loads."

    Sunday, June 02, 2019

    100kHz Half Bridge Convertor - SG3525

    This is a SMPS Circuit using SG3525 improved over the Application Note in the book SGS Motion Control Application Manual. This worked well. It helps you learn more about High Frequency Power Supply Design.

    The PCB and Schematics have been listed below, PCB track thickness and reinforcements are critical. The transformer winding and isolation should be done in a professional manner.

    Read about SG2525 - SG3525 - PWM SMPS Regulator Chip.

    100kHz Half Bridge Convertor - SG3525

    SG3525Voltage Mode PWM

    SG2525 - SG3525 - PWM SMPS Regulator Chip. A second generation ic switch mode controller optimized for high frequency.

    Hobby DIY Garage