Monday, August 22, 2011

Circuit Builder with Oscilloscope - Physlets

Simulates AC and DC circuits. Created by by Toon Van Hoecke at the Universiteit Gent. Try out small circuits and see response in Meters and Scope. Using the Java Applet Power.

Java 1.1 Physlets and the Circuitbuilder

It has a Oscilloscope and it pops up the oscilloscope window for your circuit tests.


Physlets or Physics Applets, are small flexible Java applets designed for science education.

Friday, August 19, 2011

Periodic Table and other Calculators

Periodic table of the elements contains the basic data about the elements in five languages.
Periodic Table and other Calculators

Chemistry Assistant - scientific calculator for fast calculations of molecular weight, quadratic equations, chemicals for preparations of solutions and statistic analysis.

EniG. Chemistry Assistant is an expression calculator for fast calculation of molecular weight of compounds by simple entry of chemical formula, and replaces the element symbols with their atomic weight. The program translates texts with chemical element symbols or without them into a mathematical expression and calculates them. The program includes functions for statistical analysis, solving the quadratic equation, physical constants, and prepare solution calculator
Periodic Table of the Elements - shows the change of the standard state of elements with the change of temeperature on 7 languages.
  • EniG. Periodic Table of the Elements
  • ASCII Periodic Table of the Elements
  • Printable periodic table - Colour version
  • Scientific calculator for chemists - the best online scientific calculator for chemists.

Electrochemistry Encyclopedia

This site contains popular-science style articles describing many aspects of electrochemistry. New articles are added at irregular intervals, and all articles are periodically updated as recent developments occur in the field.

Electrochemistry Encyclopedia

  • Anodizing - Robert S Alwitt
  • Brine electrolysis - Tilak V. Bommaraju and Paul J. Orosz
  • Corrosion inhibition - Norman Hackerman
  • Dielectrics - William D. Brown, Dennis Hess, Vimal Desai, and M. Jamal Deen
  • Electric fish, electric organ discharges, and electroreception - Theodore H. Bullock
  • Electrochemical engineering - Richard C. Alkire and Thomas W. Chapman
  • Electrochemical machining - Joseph McGeough
Extractive metallurgy

Extractive metallurgy

"Metal sulfide flotation concentrates can be treated in a number of ways. These include using pyrometallurgy, or smelting at high temperature, in which process the sulfur in the metal sulfide is oxidized with air or oxygen to sulfur dioxide, and molten metal is produced."

Materials-Science of which Chemical/Electrochemical Engineering is a part; is behind all the development of electronic components and manufacturing. The Backbone is Applied Science. A Super Capacitor or a
Special RF Semiconductor can only be developed using the research and efforts of these scientists.

The Sciences or their study has been much nurtured and supported by some countries like the USA. This is the foundation on which many other Technologies like Electronics and Computing thrive. In many other countries this is many times not even perceived as its is not 'glamorous' and requires much efforts and dedication.

"If the Foundation of Applied Sciences is sound, the Building of Technology is Sturdy"

As said by -

Elektrick Power Jedi

Elektrick Power Jedi - Charge Minds with Electricity

Thursday, August 18, 2011

Learning Science to Promote Scientific Thinking

Here are some resources of Science, i found useful. Latest news on science, technology, hard science subjects of physics, space and earth science, electronics, nanotechnology and technology in general.

Museums are virtual Universities. 3D Scaled Interactive Scientific and Engineering Demonstrations in Tech Museums Inspire, Educate and Train many students on Science and Technology Subjects.

Learning Science to Promote Scientific Thinking

Such Live Interactive Demonstrations may be very useful for Maths and Economics as well. These are Subtle and Complex Sciences which need Gross Manifests or Exhibits to help youngsters grasp Ideas and Concepts easily.

PhysOrg - science and tech news
Publishing around 100 articles every business day, PhysOrg offers the most comprehensive sci-tech news coverage on the web. PhysOrg exclusive feature stories are original and not found elsewhere on the web.

Multimedia Physics - SchulPhysik
Physics and Physlets. Astronomy - planet, space weather, cosmos. Mathematics - algebra to statistics. Optics and electrical. Geophysics, Energy, Galileo.

Mike's Electric Stuff is an Online Electrical Vintage Tour, back in time.

Flinn Scientific - Science Activities - Sells educational science supplies. Site has especially useful information on lab safety and lab design.  Physical Science Activities - Exciting experiments which illustrate important scientific concepts and are exciting for both you and your students

National Science Digital Library - NSDL was established by the National Science Foundation (NSF) in 2000 as an online library which directs users to exemplary resources for science, technology, engineering, and mathematics (STEM) education and research.

Wednesday, August 17, 2011

CIPCO Energy Library - Electrical Study

Presented in a Easy to understand, layman language. This Energy and Electrical Basics is a must for all who want to save power and lead a Green Lifestyle.

Undertand your Appliance and The Energy Supplier. The way electricity is generated and reaches your home.

CIPCO Energy Library - Electrical Study

A class in basic electricity and how the electric utility industry generates and delivers power to customers. Designed primarily for use by utility field representatives who need to understand electrical principles. - Fundamentals of Electricity Covers the subject of motors from an explanation of how they work, to the advantages/disadvantages of adjustable speed drives, see Motors & Drives section.

Complete descriptive information on closed- and open-loop geothermal heat pump systems. Residential, multifamily and commercial applications are all covered. - Geothermal Heat Pump Systems

Wednesday, August 10, 2011

Accelerometers in Electronics

An accelerometer is a device that measures non-gravitational accelerations. These are accelerations produced by mechanically accelerating the accelerometer via its casing. - Accelerometer Wikipedia - Accelerometer - An accelerometer is a device which measures acceleration; how fast it's speeding up. In the past an accelerometer could be a complex, bulky piece of equipment, but in
today's world, accelerometers are available as single ic's and use complex microscale machining technology.

The MMA7260Q is a 3-axis accelerometer - Tom Igoe - The MMA7260Q is a 3-axis accelerometer from Freescale Semiconductor.

Balancing robot needs gyroscope and accelerometer

Populated Gryo PCB

ADXRS150 and ADXRS300 piezo-gyroscope integrated circuit, The gyro is very small at about 5mm square (about 0.3 inches square). You can see the small combo gyro PCB mounted vertically in the center section on the balancing robot

ADXL105 Lower-Noise Wider-Bandwidth Accelerometer - The ADXL105, a near-ideal kind of vibration sensor, eliminates significant problems with existing vibration sensors, such as piezoelectric and bulk capacitive sensors. Primary benefits derive from much lower cost, stable sensitivity as a function of frequency and temperature, ruggedness, and ease of use. Besides machine health and condition monitoring, it is particularly well suited for noise and vibration cancellation applications.
triple axis accelerometer

AccelR8 is a device for measuring acceleration - AccelR8 is a device for measuring acceleration. It can measure +/- 2 g. As it contains a microprocessor, it an also measure time.

A beginner's guide to accelerometers - By measuring the amount
of static acceleration due to gravity, you can find out the angle the device is tilted at with respect to the earth. By sensing the amount of dynamic acceleration, you can analyze the way the device is moving.

Society of Robots' tilt to servo control app - How does it
work? Inside an accelerator MEMS device are tiny micro-structures that bend due to momentum and gravity. When it experiences any form of acceleration, these tiny structures bend by an equivelent amount which can be electrically detected

David T.'s motor balancing experiments - Using an oscilloscope to measure AC vibration signals generated by an accelerometer (from Dimension Engineering).

Thursday, August 04, 2011

Energy and Power Measurements

To make an analog design using log amps or multipliers, discovercircuits - four-quad is good for learning. Using a uP for math is better. Look at these links below. Build a Power Meter ! The Metrics for Going Green is with a Energy/Power/Watt meter.

enerjar - diy power meter

Related Reading

Wednesday, August 03, 2011

Watlow Reference and Guides

Louis Desloge Sr. founds Watlow Electric Manufacturing Company in St. Louis, Missouri, USA, to manufacture electric heating elements for the shoe industry. 1922

Watlow Sensors, Processing and Heaters

'Watlow designs and manufactures industrial heaters, sensors and controllers - all of the components of a thermal system."

The SERIES F4 1⁄4 DIN industrial ramping temperature controller meets the requirements of the most demanding ramp soak controller processing applications.

SERIES F4 Ramping Controller
This ramping temperature controller features a four line, high-definition LCD interface display for quick and easy profile programming and controller configuration.

SERIES F4 Ramping Controller

Watlow reference data provides information for amperage conversions, thermocouple types, RTD tolerances and more.

Watlow Ltd- Reference - Guides and Tutorials

Tuesday, August 02, 2011

System-on-Chip - SoC - IP

When a product has to be made small, the board real estate is limited or it has to be manufactured in large numbers.... SoC is the Answer. A Microprocessor evolved into a Microcontroller by packing many external chips into one chip. Now uC Card along with the other blocks like A-D, Port Drivers, Networking elements, Display Driver and other peripherals can be packed into one chip.

Some Power Supply and RF blocks cannot be easily added inside as they have a silicon processing more specific to their applications. Laser trimmed Instrumentation Op-Amps, high accuracy resistor arrays, high value capacitors, magnetics and supporting chips are placed outside on the PCB.

The SOC can pack Digital Chips, Memory, A/D, D/A converters, uC, RAM and Custom programmable areas. For more specialized communications, analog and power requirements; Special SoC types can tackle RF and Power management within a chip because of proprietary silicon processing expertise.

System on a chip - Wiki

"A system on a chip or system on chip (SoC or SOC) is an integrated circuit (IC) that integrates all components of a computer or other electronic system into a single chip. It may contain digital, analog, mixed-signal, and often radio-frequency functions—all on a single chip substrate. A typical application is in the area of embedded systems."
System-on-Chip - SoC - IP

Programmable SoC offers an alternative to custom ASIC as you can make different products from the same chip, yet make products that are portable and low power. The software, pcb, user interface and support components has to be redesigned for every unique product. Many standard IPs are available for Design and Reuse.

Some of the early Philips (nxp) 8031 variations had integrated a lot of outer chips like A/D, D/A display driver etc. This made Programmable Industrial Instruments/Gadgets possible with just a few external components. Now many variations are available from chip manufacturers, with more speed, memory and peripherals inside. Futuristic gadgets may be intelligent, interactive, networked and portable. The SoC chip makes it all possible, by integrating all product functions within it except the user interface.

SoC with a Color LCD driver, Wi-Fi, USB, RAM and Flash last you have a Computer in a Chip. Better still Web-Chip.

Stratix IV FPGAs: Think AND, not OR

With 40 nm Stratix IV FPGAs you can reach new levels of system-on-a-chip (SoC) integration. Building on the advanced, proven Stratix III architecture, Stratix IV FPGAs deliver a high-density, feature-rich and high-performance core fabric. Combined with flexible I/Os, high-bandwidth transceivers, and memory interfaces,

Atmel AT91RM9200 is ARM920T-based

It has 16K-byte instruction and 16K-byte data cache memories, 16K bytes SRAM, 128K bytes ROM, External Bus Interface incl. SDRAM, Burst Flash and Static Memory Controllers, USB Device and Host Interfaces, Ethernet 10/100 BaseT MAC, Power Management Controller and much more...

More Reading


Basic Electronics
Basics of Electronics
Product Production
Work Discipline
Testing Points
Learning Electronics
Electronics Theory

Production Notes
Prototype Fabrication
Electrical Circuits

Scots Guide Electronics
Engineering - Wikibooks
Design Lab - Jim Svoboda
DC Circuits UOG
Socratic Electronics
Blobz Guide Electric Circuits

Product Design
Product Development
Constant Current Source
Good Voltage Regulators
Insulation Resistance
Digital Insulation Tester
DN Schematic PCB 04
DN Product Design 07

Hobby Circuits
VU Meter Circuits
LED brightness control
555 Incredible Chip
Process Control
liquid level measurement
Thermocouples and RTD
Design ADC Interface uC
Thermocouple Amplifier
IA Instrumentation 02
Temperature on DMM
Optical Proximity Switch
Analog Mux - Data Acquisition

Test Measurement
Instrumentation Automation
NI Test and Measurement
DMM Digital Multi Meter
Oscilloscope in T&M
IA Automation 01
Build Instruments
Tektronix T&M Equipment
Educators Corner – Agilent

Power Electronics
UPS Background
Transformer Connections
DN Power Electronics 03
DN Power Electronics 02
Half Bridge Convertor SG3525

Interfacing Microcontrollers
Embedded Process Control
80C31 8052 Microcontroller
Microprocessors and uC
Embedded Systems Design

Good Voltage Regulators
Relays and Contactors
Potentiometers Trimpots
Prototype Boards Types
Types of Capacitors
Types of Switches
Resistors How they Work
Coils Transformers SMPS
Mains Transformers Types
DN Components Selection 05

Tutor Gadgets
Count-Up Timer
Digital Logic Gates
Electronics Tutors

Teaching Instruments
Charles Proteus Steinmetz
Muntzing a Circuit Design
Teralab Electronics projects
Historical Instruments

Tables, Charts, Videos
Binary and Hex
Resistor Color Code
Ohms Law
Giga, Tera, Pico, Nano
High Resistance Materials

School - Analog Design
DN Analog Basics 06
DN Op-Amps 01
TI Semiconductors