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MECA Electronics
Tech Smorgasbord Archives - 5

A huge collection of my 'Factoids' can be accessed from my 'Kirt's Cogitations' table of contents.

Tech Topics Smorgasbord, another manifestation of Factoids, are be found on these pages:

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 |

All pertain to topics that are related to the general engineering and science theme of RF Cafe.

Cyber Attacks on Cellphone Batteries

Draining cellphone batteries is a new sport by hackers. By usurping control of communications channels that a cellphone uses for broadband data transfer, an attacker repeatedly awakens a victim phone from its low-power mode. Verification tests were run on a Nokia 6620 phone at UC Davis that were able to reduce a battery's lifetime from 156 hours to a mere 7 hours from a fully-charged state. The process was carried out through two commercial networks without triggering any intruder alarms.

Unemployed Electrical & Electronics Engineers
 EE Times Research 2006

YearQty.%
200560001.8
200418,0002.4
200324,0006.3
200216,0003.8
20016,0001.6
20006,0001.4

Planned Retirement Income Sources by Age Group
IEEE-USA Research 2006

SourceAges%
IRA and/or
401(k)
18-3465
35-4957
50-6441
65+23
Pension18-3429
35-4937
50-6437
65+38
Stocks
and/or
Mutual Funds
18-3442
35-4933
50-6427
65+33
Social
Security
18-3424
35-4929
50-6444
65+60

Semiconductor Component Spending by Country
 Microwaves & RF Research 2005

Country$109%Mkt
U.S.58.7033.5
Japan45.7226.1
Taiwan17.349.9
Germany10.215.8
China9.5145.4
S. Korea9.2335.3
Others 14.1

 

September 2005 Internet Statistics
 Scientific American Research 2006

Every Day of the Month:

94 million people use the Internet
77% wrote/read e-mail
63% used search engines
46% read online news
29% did job-related research
18% instant messaged
18% banked online
5% booked travel
3% read blogs
3% participated in an auction

 

2005 EE Salaries U.S., E.U., & India
EE Times Research 2006

Title$US Mean
VP of Engr.128,079
Tech. Director119,127
Principal Engr.109,962
Consultant95,085
Group Leader93,514
Sr. Engineer91,903
Systems Engr.86,596
Sr. Test Engr.85,222
Project Engr.80,124
Software Engr.74,235
Design Engr.71,659
Test Engr.69,649

Perfect 2-Carat Man-Made Diamonds

A perfect man-made, single-crystal, 2-carat diamond.Perfect single-crystal diamonds of more than two carats are churned out in a single day. The gemstones are created using a process called chemical vapor deposition (CVD), which grows diamond crystals one carbon atom at a time. CVD is the same technique used to process many semiconductor circuits.

 

Gallium is a byproduct of smelting aluminum and zinc, and is more rare than gold. It, along with mercury, cesium, and rubidium, are the only metals which can be liquid near room temperature.

Arsenic is a deadly poison that is made by heating composite minerals in the absence of air.

Acting together in compound form, gallium arsenide (GaAs) has been the basis of the personal communications revolution.

Amount of Greenhouse Gases (CO2) Emitted by Household Appliance Use

Itemlbs/yr
Heating6643
Air Conditioning4566
Hot Water Heater2384
Refrigerator2032
Dryer1770
Dishwasher840
Computer430
Microwave343
Washer197
Television196
VCR90
Ceiling Fan82
Printer74
Alarm Clock74

 
The world is running out of Internet addresses. No worries, however, because Internet Protocol version 6 (IPv6) will solve that problem by providing up to 2128 unique IP addresses. That is the equivalent of roughly 2,000 addresses for every square meter on the Earth's surface. Question: If IPv6 replaces IPv4, what happened to IPv5?
ERZIA (RF amplifiers, wireless, communications) - RF Cafe MPDevice microwave devices - RF Cafe
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Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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