Thursday, July 2, 2009

Electronics Project Design References and Tips

Good Electronics Project Design References and Tips Can Accelerate Your Practical Know-How in Electronics.

Getting good and timely information on the electronics project that you are embarking on sometimes can be time consuming and frustrating. Hence, the objective of this site is to bridge this gap. This site is dedicated to all electronics enthusiasts whether you are a student, a teacher, hobbyist or even an electronics engineer.

The end result of an electronics project is determined by a few factors. It normally starts with the strong enthusiasm in the project chosen, going on to schematic or circuit design, printed circuit board design, software programming if microcontroller is involved and building protoypes.

This site provides schematics and parts lists of various projects that you can experiment yourself. It also include articles on the importance of reliability testing, electromagnetic compatibility (EMC) testing, failure mode effect and Analysis (FMEA), fundamental of electronic parts and test/measurement tools that are needed before you embark on your journey of building your own electronics project.

This Electroncs Project Design site will be updated from time to time with new articles and tips, so remember to check back here occasionally.

If you find this site useful and would like to contribute ideas to be included in this site, you are most welcome to email the author. Your comment on the contents of this Electronics Project Design site is most welcome.

Sunday, June 21, 2009

Liquid crystal display


A liquid crystal display (LCD) is an electronically-modulated optical device shaped into a thin, flat panel made up of any number of color or monochrome pixels filled with liquid crystals and arrayed in front of a light source (backlight) or reflector. It is often used in battery-powered electronic devices because it requires very small amounts of electric power.

A comprehensive classification of the various types and electro-optical modes of LCDs is provided in the article LCD classification.

Inverter

An inverter is an electrical device that converts direct current (DC) to alternating current (AC); the resulting AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits.

Static inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers, to large electric utility high-voltage direct current applications that transport bulk power. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries.

The electrical inverter is a high-power electronic oscillator. It is so named because early mechanical AC to DC converters were made to work in reverse, and thus were "inverted", to convert DC to AC.

The inverter performs the opposite function of a rectifier.

Australia

Whereas the original bobbers and choppers were mostly home built on a budget, the modern development of the chopper tends to be shop built and very expensive. It differs from what has gone before in the technology employed in frame construction and the use of billet aluminium parts... headlights, foot and hand controls etc. Almost all 'Longbikes' have 'Big Inch' after market or current Harley Davidson motors. Paint work styles tend to favour ghostly air brushing techniques and the Longbikes are almost exclusively solo.

However the home built Bobber, Old School and Classic choppers are enjoying a comeback around the world and in Australia.

In Australia, many choppers built in the seventies are being brought out of 'retirement' and appearing again on our streets. Older bikes from this period; Honda CB750/4's, Yamaha XS 650's and Triumphs 750's and 650's are being purchased and chopped like they were 'back then'. Because of their reliability, modern Japanese and British 'cruisers' are also getting chopped, though this is more difficult because of Australia's restrictive regulations on modern machines. This current crop of home builders is a fairly even mix of guys in their 40's and 50's who built a chopper in the 70's and 80's and young blokes who've been inspired to emulate a unique period of Australian motorcycle history.

In most Australian states, Australian Design Rules limit frame modifications (engineer's certificate required), and fork extension (6"). The most restrictive rule is one that allows a maximum distance of 550mm from the front axle horizontally back to the steering head. Noise restrictions and handlebar dimensions are also regulated. In some states ADR's do not apply to pre 1977 motorcycles, so some of the older more radical choppers are still seen on Australian roads.