Those of you who are
interested to know how simple electrical calculations are made, are invited to
check out
"Ohm's Law"
(http://www.megavolt.co.il/articles/OhmLaw.html). Ohm's law is the very basis of
most all electrical and electronic calculations. You can use it in it's simplest
form to figure out how much power a certain appliance is using.
For those who need a little help with their math skills, the "Ohms
Law Calculator" (
http://www.megavolt.co.il/Elect_corner/ohmCal.html
) is just what you need.
Just stick in any two of the four known values and press calculate. Now you can
know if that heater will work on that 10A line or not.
LED Lighting
Like I must have mentioned 100 times before, LED lighting will be the lighting
of choice for most applications around your home in the very near future. LED
bulbs are already being used in flashlights and in many new cars.
Although various LED bulbs can already be bought in many electrical stores for general
use in your home, they are still expensive and don't give much light.
But still, many of you are confused, not knowing exactly what LED lights are,
and why they are so different. Well, "LED
Lighting" (http://www.megavolt.co.il/Tips_and_info/LED.html) will give you an
introduction to this relatively new technology. It's short and to the point.
Protect Your
Appliances
Electronic Specialists Inc. have put out a multi-part series on protecting your
delicate appliances called
"Care & Maintenance Ideas for Friendlier Electronic Equipment". They were nice
enough to allow me to publish this series on my site. So far I have published 4
out of 10+ parts, and will add more from time to time. Although these articles
are slanted toward the American public and the company is obviously trying to
sell their goods, much of the information is relevant to us
here in Israel. I believe that this is a very important subject and should be
taken seriously.
http://www.megavolt.co.il/Tips_and_info/surge1.html
Timely Tips
I would like to take this opportunity to welcome Avi Goldstein to the Megavolt
team. Avi
is the manager of Goldstein & Berger Appliances, and has been servicing American major appliances in Israel for over 20 years.
Fortunate for us, Avi has agreed to share some tips with us on a regular basis.
Avi is no stranger to Megavolt, and has contributed articles in the past (
110V vs. 220V Part 2
), as well as answered questions about appliances.
So without further ado, for those who want to learn how to save some money even when you must order a repairman, Avi's first "Timely Tips" article on Megavolt. Enjoy.
http://www.megavolt.co.il/Tips_and_info/timelytips1.html
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Generated Energy From Balloons
Researchers at the Technion Israel Institute of Technology in Haifa devised a new way to produce electricity using helium balloons coated with solar cells.
The Technion researchers estimate that each home or apartment would need only two balloons. If they were mass produced, their cost could be reduced below the estimated $700 per square meter of today's solar cells.
Scientists from the Department of Aeronautical Engineering, Architecture and City Construction have already installed two models, one in the city and one in a desert area that lacks power.
For more info:
http://www.jpost.com/servlet/Satellite?pagename=JPost%2FJPArticle%2FShowFull&cid=1182409629380
The Over Voltage Guru
Lets suppose you or someone you know had a serious question or problem concerning lightning protection, energy management or electrical surges in your home or office, who can you trust and turn to for help? To Mike Green of course. Besides doing what most electrical engineers do, Mike is one of the leading "gurus" of energy management and surge protection in the country, and has written technical and academic papers that have been published at national conferences and in trade journals.
Mike has not only been kind enough to take time from his busy schedule to contribute an article to Megavolt from time to time, but he has just launched his new site called ...well...Mike Green. Although it's not completely finished, the site has a lot of valuable information that is worth looking at (some of it in Hebrew).
One such interesting article is
"Lighting Protection"
(http://www.lightning.co.il/lightningUC.html), which talks about the damage done to appliances and electronic devices in the home, office and factory due to over voltage caused by lightning and switching events.
"A Lightning Primer" is another article by Mike Green, which can be found at
http://www.megavolt.co.il/Tips_and_info/lightningprimer.html,
explains how lightning causes fires in your homes, as well as damage to your
electrical devices.
Talking about lightning, there seems to be a number of injuries caused by using electronic devices, such as iPods, outside when the weather is foul. To see what I mean take a look at
"Injury Caused by MP3 Player in Storm", and
don't forget to catch the video clip at the end.
http://www.megavolt.co.il/articles/MP3injury.html
Efficient Heating With Style
Are you looking for a different type of heating system for your home, something
efficient and stylish? If so,
Thermostyler has some heating alternatives for you.
Thermostyler are the exclusive distributors of France's Campa and Noirot "top of the line" products in Israel, offering advanced and stylish heating systems for residential, commercial, and industrial use. All models have optional programming systems, and conform to
the Israeli electrical standards.
http://www.thermostyler.kremer.co.il/
Is Mercury Poison Really a Threat?
A couple of months ago we were hearing how various governments were ready to ban the incandescent
light bulbs, and bring in the energy saving CFLs (Compact Fluorescent Light bulb). Well now the other side of the coin is
surfacing. It seems that CFLs not only bring efficiency and greenhouse gas reduction, but also a much greater risk of mercury poisoning (if you accidentally break the bulb). There seems to be a disagreement as to how much mercury is actually in each bulb, but I suppose if you
multiply the bulbs, you multiply the mercury. Why don't you read and decide for yourself?
http://news.nationalgeographic.com/news/2007/05/070518-cfls-bulbs.html
http://www.treehugger.com/files/2007/05/ask_treehugger_14.php
Solar Powered Plane
A team of students from the Technion Israel Institute of Technology, Haifa is working on a new solar powered unmanned aerial vehicle (UAV) which they hope will soon break a 17 year old world aviation record. Although solar aviation is nothing new, it is still considered to be in its infancy. The work done at the Technion as well as elsewhere around the world is starting to attract the attention of the aviation industry with the hope of creating green aircrafts with a much higher endurance threshold.
Full Story: http://www.tfot.info/content/view/117/71/
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