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Power Measurement – Watts , dBm and conversion

September 28th, 2010 No comments


Most of us know that Watts is a unit of expressing power or the amount of the work done per unit of time. Electrically, One watt is defined as the amount of work done when one ampere of current is flowing through an Electric Potentiall difference of 1 Ampere.

In other words

P = VxA

If V is the voltage difference between a resistor of value R, then the wattage accross the resistor is given by

P = V*V /R

Example :- Find the wattage consumption accross a bulb of resistance 50 Ohm, if the voltage of 100 Volt is applied accross it.

Answer :- The wattage consumption is given by

P = V*V / R

Here,

V = 100 V
R = 50 Ohms,

So, P = 100 x 100 / 50
= 200 Watts

Many electricity companies report their power generation capacity in Megawatts. One megawatt is equal to 1 million watts.


RF and other electric design engineers use another unit of power consumption. It is a logarithmic measurement. Here is the formula to convert a power P into dBm

P(dBm) = 10 log10(p/p0)

P is the power in watts and P(dBm) is the power in dBm. Here p0 isequal to 1mW or 1×10-3 Watts. You may also use some online calculators to Calculate dBm from watts and vice versa.

Starred Reviews is glad to provide you analysis of the trusted calculators and online tools used by mathematicians and scientists. Feel free to post your comments below.

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2012 Hyundai Azera

September 27th, 2010 1 comment

South Korea based Hyundai Motor Company is very well known for the rapid developments and with the successful introduction of Genesis is moving forward to unveil the revamped edition of Azera known to be known as the 2012 Hyundai Azera. Taking into consideration the buyers expectations and suggestions for improvements Hyundai has therefore decided to bring forth the 2012 Hyundai Azera.

The 2012 Hyundai Azera can be comfortably put in midsized luxury sedan segment because of its revamped design and architecture. Inheriting a major of its interiors from its earlier version, the exteriors are expected to have more refined contours, a curved roofline and imposing front grille studded hood. The redesign gives a strong resemblance to that of Sonata and Genesis. It’ll also have artistically reworked headlights on bumpers and so will be the LED equipped tail lamps.

The 2012 Hyundai Azera will be made available in 2 trim levels. The base model will be rejigged with a 3.3 liter V6 6 cylinder engine capable of emanating 234 horsepower. And the high end model will be equipped with a 3.8 liter V6 6 cylinder engine capable of producing a horsepower of 305 and based on the Lambda architecture. Both the editions will be coupled with a 6 speed gear box in automatic transmission mode offered as standard with the option to move to manual transmission mode. The 2012 Hyundai Azera is anticipated to definitely go with the all wheel drive mechanism. The combination of a 6 speed gear box in automatic transmission mode is expected to deliver better fuel efficiency and a standard option across all the model of 2012 Azera. With such an empowered engine and drive train design, the 2012 Hyundai Azera will deliver a decent mileage figure of more than 19 miles per gallon within city limits and close to 28 miles per gallon on highways.

As mentioned earlier, the interiors of 2012 Hyundai Azera will mostly be based on its earlier avatar albeit with vast improvements. All the passenger seats numbering 5 will be redesigned with soft touch leather for that added touch of luxury. The inner space would provide ample head room and leg room space and the car floor is expected to be covered with carpet. The driver’s seat will have the option to be adjusted in 8 ways and the co-driver’s seat in 4 different ways and are expected to be heated seats. The dashboard will have a tilted telescopic steering wheel either wrapped in leather or woodgrain. The list of accessories also feature adjustable power pedals, a shift knob, a 6 CD changer supplemented with an array of 10 speakers and a subwoofer, powered side mirrors and windows and an electro-chromatic rear view mirror. On the safety front the 2012 Hyundai Azera will possess the mandatory airbags at various interior locations in addition to child safety seat and antilock disc brakes. Also featured will be an electronic stability mechanism.

The 2012 Hyundai Azera is anticipated to make a grand appearance by the end of 2011 or the start of 2012. And although the price is still under wraps, it is believed to fall in the range of $25000 to $27000.

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Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package Review

September 27th, 2010 No comments

About Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package

For a price of $899, what do you expect to find from a home entertainment system? Well, you’d probably be surprised what Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package has to offer for the same price. If you haven’t found the best home entertainment system yet, then make sure that you check out the features of this package.

The product measures at a dimension of 22 x 27 x 45 inches, while weighing up to 101 pounds. Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package is therefore relatively easy to unpack, set up and place anywhere you want at home. It is well regarded in the industry by critics and users alike, such that it is one of the highly recommended home theater packages out there.

Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package features the unique A/V technology that is noted for its Onkyo amplification muscle. The unit is powered through 130 watts per channel while generating up to 6 ohms. The package comes with four HDMI 1.4a input such that it is very easy to connect this system with other devices for your intended purposes, whether it be movie, music, or gaming.

Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package is also built with massive processing power with a default display quality of up to 1080p resolution, even on widescreen. Even if you are connecting the home theater system with non-HD content, you can use the Faroudja DCDi Cinema feature to upscale those content to 1080p to ensure the highest resolution possible. Moreover, it is a useful feature that you can use to easily connect with 3D content later on. Aside from the HDMI input cable, you will also get other connectivity options with Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package including a universal port that allows you to connect your iPhone or iPod into the system.

The brand name Onkyo has become associated with quality sound. Thus, it should come as no surprise that Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package also features stellar audio processing technology such that you can tweak the quality depending on what form of entertainment you’d like to enjoy.

Pro’s of Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package

*The setup for this home theater system is very easy;

*The sound quality produced is excellent;

*The instruction manual that comes along with this package make using this product really easy as the instructions are well written.

Con’s of Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package

*It has the tendency to heat up rather easily such that the sounds would go off for a short while;

*This is not ideal for placing into a spot where it does not get proper ventilation.

The Bottom Line

Onkyo HT-S7300 7.1 Channel Home Theater Receiver/Speaker Package is a convenient all-in-one home theater system that combines functionality for movies, music, and games. So, whatever your idea of quality entertainment is, this product has got it for you and there is no need to look elsewhere!

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Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater Receiver/Speaker Package Review

September 27th, 2010 1 comment

About Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater

Do you want to set up your home entertainment system but would not want to spend a staggering amount on buying each component, such as your HDTV, Blu-ray player, and sound system? Why not get them in one package to ensure that you have everything you need in one system? If yes, then you might be interested in  Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater. It is priced at $1,099 in leading online retailers and for that price tag, you can enjoy a rare receiver/speaker system in your home. To decide whether this product is a great choice for you, read on below.

Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater is unique in the market is the sheer quality of the speakers that go along with this package. It is equipped with an A/V receiver that were chosen specifically from the best home entertainment technologies to ensure topnotch home theater quality. There is also a wide range of functionality you can enjoy here, thanks to the various entertainment components available.

First off,  Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater is equipped with THX certified processing that enables you to use the system for music, movies, and gaming purposes. With the THX Integrated System Plus, you can rest assured a full-blown performance with this receiver-speaker package that comes in an affordable price. It has an approximately distance of eight feet, which measures the viewing distance from the screen to your seats.

Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater also features HDMI 1.4a Support for 3D Video and Audio Return Channel. Hence, you can easily connect high definition content sources such as your gaming console or Blu-ray player into this home theater package and enjoy high resolution display and give you more possibilities with your home entertainment system.

Other notable features with the  Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater include HDMI video upscaling by up to 1080p to increase picture resolution and enjoy high definition display. There is also a Dolby Pro Logic IIz to increase Surround Sound capacity. Some of the basic components shipped in with this product include the receiver, speakers, subwoofer, speaker cables, indoor antenna, loop antenna, microphone, instruction manual, quick setup guide, remote controller, and 2 AA batteries.

Pro’s of Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater

*Excellent quality speakers;

*Impressive picture display quality;

*Flexible capacity that enables you to use it for movies, music, or gaming;

*Can be connected with various external devices to access more content;

*Integrates the latest home entertainment technologies into one system.

Con’s of Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater

*Onkyo is not well known for producing the best technologies in terms of processing power.

The Bottom Line

The  Onkyo HT-S9300THX THX Certified 7.1 Channel Home Theater might be a bit too pricey in comparison with some other home entertainment systems. But with this home theater package, you truly get what you pay for. Aside from the excellent quality of speakers and home theater system, it is also built with a lot of components to give you more functionality.

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Sony BDV-HZ970W Home Theater System 5.1 Channel by Sony Review

September 27th, 2010 1 comment

About Sony BDV-HZ970W Home Theater System 5.1 Channel

Sony has been somewhat synonymous to delivering quality home entertainment systems, whether it be producing HDTVs, gaming consoles, speaker, or audio systems! Hence, it comes as no surprise that they’d be excel in the home theater department too. This is evidenced by the success that Sony BDV-HZ970W Home Theater System 5.1 Channel is experiencing in the market. If you are interested to get this system, make sure to read more details below to reach to a conclusion.

Sony BDV-HZ970W Home Theater System 5.1 Channel is a home entertainment system that is equipped with floor-standing and wireless speakers on the rear. This system enables you to view full HD 1080p content and superb audio quality with its 5.1 channel HD surround sound system. Indeed, it enables you to take your movie viewing experience to a whole new level. The system recognizes a wide range of file formats ranging from DVD, Blu-ray discs, CD, VCD, AVCHD, among others.

Needless to say, Sony BDV-HZ970W Home Theater System 5.1 Channel is Blu-ray 3D capable. It also features the BRAVIA Monolithic Design Concept, which is a notable feature in the Sony line. The inclusion of HDMI inputs and the universal remote that are shipped in with this product enables you to enjoy a wide range of online and personal entertainment content by easily connecting the unit to other devices. Thus, it opens up more opportunities to expand on your entertainment capabilities.

Sony BDV-HZ970W Home Theater System 5.1 Channel also integrates a built in decoder into its system with the Dolby TrueHD and DTS-HD Master Audio system. Meanwhile, the audio output mode is in Surround Sound to ensure topnotch audio quality that feels truly cinematic right at your own home. Other essential components of the home theater system include an HDMI repeater and a couple of HDMI inputs that is equipped with 3D pass-through. You can purchase the system at approximately $649 in leading online retailers.

Pro’s of Sony BDV-HZ970W Home Theater System 5.1 Channel

*The product is superb in quality and produces great sound;

*It is very easy to set up and takes only a few simple steps to get done;

*The S-Air is most notable for its performance without suffering from any glitch;

*It works well with any existing Sony entertainment products you have at home;

*It also provides support for HD content, whether movies or gaming;

*There are several HDMI output cable to choose from to increase connectivity options;

*The DLNA offers excellent function.

Con’s of Sony BDV-HZ970W Home Theater System 5.1 Channel

*The device responds rather slowly to remote commands such as navigating through the menu, although this is the only major complaint there is in the product.

The Bottom Line

Sony BDV-HZ970W Home Theater System 5.1 Channel is another manifestation to the supremacy that Sony has established in the home entertainment industry. It is therefore a noteworthy choice if you are looking to enjoy quality entertainment at home while allowing you flexibility in terms of accessing the content you want.

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