Electricity onboard.

There are many common misconceptions regrading battery capacity.

Deep cycle batteries are sold by capacity and are normally rated in amp-hours (Ah). It would be reasonable to expect a 100 amp hour battery to deliver one hundred amp hours – one amp for one hundred hours OR ten amps for ten hours.

Sadly this a long way from the truth. The number of amp hours you can extract from a given battery is dependent on the following factors:

• The battery’s chemistry – for example – common lead acid batteries will deliver far less energy than AGM or GEL batteries for the same amp hour rating.
• The batteries age – as batteries age they become less able to deliver the same capacity.
• Your willingness to shorten the life of the batteries by deeply discharging the battery.
• The chargers ability to fully charge the battery.

The following link goes to an online PDF from Victron Energy.

It's a must read as it describes all the different types of batteries and charging methods available for Yachts but this information and formula is equally applicable to any domestic application you may have.

It has chapters on why batteries fail and how to make them last longer, alternators and generators, power calculations and much more.

I won't reproduce the Victron report here for copywrite reasons, but click the link to check it out, A good read IMHO for anyone interested in Battery power and storage applications around the home, mobile homes and caravans or boats.

http://www.planet-energy.org/sustainable_energy/ebooks/ElectricityonBoard_rev8_july2004.pdf

DailyTech - Flying Drones Dubbed "SkyNET" Break into Wireless Networks

DailyTech - Flying Drones Dubbed "SkyNET" Break into Wireless Networks

Symantec will offer a new product dubbed "Norton AntiAircraft." This product will indeed disable some of these drones, yet for no apparent reason will completely ignore others. Also it will ocassionally target small children and puppies.

Not to be outdone, McAfee will offer a solution which puports to offer protection yet Internet trolls will proclaim the software actually does nothing. Anecdotal evidence will abound with no clear cut answers.

AVG and Avast will provide free programs to combat this threat. Web pundits will debate endlessly as to which is better, but in the end both will be shown to burn down houses at an alarming rate.

Eset will develop software which actually works fairly well, but almost noone will have ever heard of it.

Eventually Microsoft will take over the FAA turn all areas into no-fly zones where only Microsoft branded mini F-22s will be allowed to operate. These drones will of course be hacked to run botnets themselves and the cycle will repeat itself.

Finally Apple will come along and place improved reality distortion field generators (these will be magical) and the people will rejoice in their newfound sense of security and safety.

Reality check: VARs report steady gains for videoconferencing

Reality check: VARs report steady gains for videoconferencing

While videoconferencing sales growth has not been spectacular this year amid the uncertainty of the U.S. economy, solution providers continue to invest in practices around the technology.

This, after years of hype from vendors, especially Cisco Systems Inc., about the allure of high-end “immersive” telepresence videoconferencing as well as lower-end solutions, seems almost anticlimactic.

The Ultimate Guide To Pasword Recovery And Management

Learn how to immediately recover passwords from most applications and website accounts, as well as Windows accounts. Also includes tips for effective account management to never again lose a single password.

http://tinyurl.com/3tro2rd

"Weird Al" Yankovic - Stop Forwarding That Crap To Me

This is something we all see!

3000 Watt Generator Powers Itself, Grinder & Drill Press.

Two-screen laptops: complete overkill, or completely logical? - News - PC & Tech Authority

Two-screen laptops: complete overkill, or completely logical? - News - PC & Tech Authority


The laptop with two screens is an idea that just won't go away. Is this an idea we should look at more closely?
If you haven’t seen the photos of this laptop with two screens doing the round of the Web, take a look below.

With two 17in HD LED displays, the SpaceBook goes against every trend in laptop design we can think of (well, apart from the Core i7 and Core i5 processors). It's more than 1.7in thick, weighs more than 4.5 kilograms, and according to its makers has the world's largest laptop screen space. While it sounds a bit like vaporware, prototype models have been pictured online, and the company is apparently taking preorders.




Image Source: gScreen

DVI-I Male HD15 to VGA Female Video Adapter

Comsol DVI-I Male HD15 to VGA Female Video Adapter
!

Overview

Digital Visual Interface (DVI™) is the standard interface for high-performance connection between PCs and flat panel displays, CRT displays, projectors, and HDTV. This analog video adapter is fully compliant with the DVI standard defined by DDWG (Digital Display Working Group). The DVI-A analog configuration adapts an existing VGA cable for use with an analog DVI-I device.

Maximum resolution is UXGA (1600 pixels x 1200 pixels). Gold-plated contacts provide full conductivity with no data loss. PC- and Mac®-compatible cable supports hot-plugging of DVI display devices.

Connector 1: DVI-A 17-pin Female
Connector 2: HD15 Male
Specifications:
- Warranty: Lifetime
- Color: Black
- Mfr: Cables To Go
- Weight: 0.090lbs

More Products on gizmomart.com.au :

A female DE15 socket (videocard side).
Pin 1	RED	Red video
Pin 2	GREEN	Green video
Pin 3	BLUE	Blue video
Pin 4	ID2/RES	formerly Monitor ID bit 2, reserved since E-DDC
Pin 5	GND	Ground (HSync)
Pin 6	RED_RTN	Red return
Pin 7	GREEN_RTN	Green return
Pin 8	BLUE_RTN	Blue return
Pin 9	KEY/PWR	formerly key, now +5V DC
Pin 10	GND	Ground (VSync, DDC)
Pin 11	ID0/RES	formerly Monitor ID bit 0, reserved since E-DDC
Pin 12	ID1/SDA	formerly Monitor ID bit 1, I²C data since DDC2
Pin 13	HSync	Horizontal sync
Pin 14	VSync	Vertical sync
Pin 15	ID3/SCL	formerly Monitor ID bit 3, I²C clock since DDC2

.

A female DVI-I socket from the front
Pin 1	TMDS data 2−	Digital red− (link 1)
Pin 2	TMDS data 2+	Digital red+ (link 1)
Pin 3	TMDS data 2/4 shield
Pin 4	TMDS data 4−	Digital green− (link 2)
Pin 5	TMDS data 4+	Digital green+ (link 2)
Pin 6	DDC clock
Pin 7	DDC data
Pin 8	Analog vertical sync
Pin 9	TMDS data 1−	Digital green− (link 1)
Pin 10	TMDS data 1+	Digital green+ (link 1)
Pin 11	TMDS data 1/3 shield
Pin 12	TMDS data 3-	Digital blue− (link 2)
Pin 13	TMDS data 3+	Digital blue+ (link 2)
Pin 14	+5 V	Power for monitor when in standby
Pin 15	Ground	Return for pin 14 and analog sync
Pin 16	Hot plug detect
Pin 17	TMDS data 0−	Digital blue− (link 1) and digital sync
Pin 18	TMDS data 0+	Digital blue+ (link 1) and digital sync
Pin 19	TMDS data 0/5 shield
Pin 20	TMDS data 5−	Digital red− (link 2)
Pin 21	TMDS data 5+	Digital red+ (link 2)
Pin 22	TMDS clock shield
Pin 23	TMDS clock+	Digital clock+ (links 1 and 2)
Pin 24	TMDS clock−	Digital clock− (links 1 and 2)
C1	Analog red
C2	Analog green
C3	Analog blue
C4	Analog horizontal sync
C5	Analog ground	Return for R, G, and B signals

A "MEDIA TO GET" ALL DATAS IN ELECTRICAL SCIENCE...!!: HP nano device implements memristor

A "MEDIA TO GET" ALL DATAS IN ELECTRICAL SCIENCE...!!: HP nano device implements memristor



and heaps more at http://mediatoget.blogspot.com/

Analysis: Carbon tax to define IT success - Finance - Business - News - iTnews.com.au

Analysis: Carbon tax to define IT success - Finance - Business - News - iTnews.com.au

The inevitable increase in power costs driven by the carbon tax will create notable gaps between the cost overheads of those providing services from the latest generation of data centres fitted with innovative cooling technology and those operating ageing facilities.