The circuit is basically an op-amp used in the non-inverting amplifier mode. The non-inverting input is biased by R4 and R5 via a decoupling network which is comprised of R3 and C3. C4 and C5 give DC blocking at the input and output respectively. With SW1 open there is virtually 100% negative feedback through R1, R2 and C1, giving the circuit unit gain and a flat response. Closing SW1 brings C2 into circuit, and this de-couples some of the feedback through R1 and R2 at frequencies of more than a few hundred Hz, giving the required rising response. Feedback through C1 at high treble frequencies causes the response to fall away above about 5k5Hz, and prevents the very high frequency harmonics from being excessively emphasized.

The disc is cut at constant amplitude, except from 500Hz to 2120Hz where it is cut at constant velocity. When this disc is replayed with a magnetic pickup, the relative output voltage rises with frequency, due to the fact that the magnetically generated voltage is proportional to the velocity of the stylus as it moves sideways in the groove. To restore the original sound quality, a preamplifier with a frequency response that, gives decreasing output with increasing frequency is required. This response curve is known as the RIAA equalization and it is tailored accurately to fit the cutting and replay processes. The signal level from a magnetic pickup is low, generally 20mVpp and so a low noise pre- amplifier is needed.

The circuit shows a realization of this requirement. The low noise amplifier is the LM381 -made by National Semiconductors. A DC bias control is included (RV1, RV2), and the feedback components generate the RIAA curve. Use screened cable for the wiring to the pickup, keep the circuit away from transformers (and the pickup and its wiring) and connect all the earths together, near to the IC.

Features of FDM

Unbeatable download speed:

FDM uses the technique of splitting the file being downloaded into sections. After the file has been sliced into different sections, all sections are downloaded at the same time. This increases the download speed up to 600 percentages.

Broken download management:

Oops! Internet connection failed. No need to worry about such a scenario. With FDM broken downloads are automatically resumed. So just start the download and forget it.

Support for protocols:

Files from any remote server can be downloaded using HTTP, HTTPS and FTP. BitTorrent protocol can also be used for file downloads.

Video download support:

Download your favourite videos from your favourite video sites like Google video, YouTube etc. The downloaded videos can be saved in .flv format, or can be converted into other commonly used formats.

How to get FDM?

Follow the below link to download FDM

DOWNLOAD FDM

Intel atom Z500 Specifications:

Intel atom Z500 has only one core.

Intel atom Z500 has two threads.

2 GHz is the base frequency of Intel 500 processor.

Intel atom Z500 is a 32 bit microprocessor.

Intel atom Z500 has 512 KB of L2 cache.

FSB speed of Intel atom Z500 is about 533 MHz.

Intel atom Z500 Price:

Price of Intel atom Z500 is about 45 dollars. ie 2,083.12 INR

The frequency spectrum extends from subsonic frequencies (a few hertz) to cosmic rays (1022Hz). The International Radio Consultative Committee (CCIR) bands are given below.

Extremely low frequency (ELF) :

ELF range varies from 30Hz to 300Hz and includes ac power signals and low frequency telemetry signals.

Voice frequencies (VFs) :

VF range varies from 300Hz to 3000Hz. Standard telephone channels has 300Hz to 3000Hz bandwidth.

Very low frequency(VLF) :

VLF range varies from 3 KHz to 30 KHz, which includes the upper end of human hearing range. They are used in sub-marine applications.

Low frequency (LF):

LF range varies from 30 KHz to 300 KHz and is used in marine and aeronautical navigation.

Medium frequency(MF):

MF range varies from 300 KHz to 3 MHz and is used for commercial AM broadcasting (535 KHz to 1605 KHz).

High frequency(HF):

HF ranges vary from 3 MHz to 30 MHz and are called short waves. Most of the two-way communications use this range. Amateur radio and citizen band radio also use signals in this range.

Very high frequency (VHF):

VHF range is from 30 MHz to 300 MHz, these are used for mobile, radio, marine, aeronautical communications, commercial FM broadcasting (88 MHz to 108 MHz ) and commercial TV broadcasting (54 MHz to 216 MHz)- channels (2-13).

Ultra high frequency(UHF):

UHF range is from 300 MHz to 3 GHz. It is used for commercial TV broadcasting of channels 14-83, land mobile communication, cellular phones military services, certain radar and navigation systems, microwave and satellite radio systems. Frequencies above 1 GHz are microwaves.

Super high frequency(SHF):

SHF range varies from 3 GHz to 30 GHz and is used in microwave and satellite communication.

Extremely high frequency (EHF):

EHF range varies from 30 GHz to 300 GHz.

Information signal is given to the transmitter which then transmits the message over the medium to the receiver. Noise gets added up to the message in the channel. It degrades the transmitted information.
Transmitter:
It has a collection of electronic components and circuits which are designed to convert information signal into electronic signals compatible with the medium.
Receiver:
It accepts the transmitted message and converts it back into an understandable form.
Communication channel:
It is the medium by which electronic signal is sent from one location to the other.
Signals which have to be transmitted are converted into electric and magnetic fields that propagate readily over long distances. Also, the medium attenuates the signal which results in the signal degradation. Finally the amplitude of the signal received will be much lower than original signal. Hence, the amplification of the signal should be done both at the transmitter and the receiver.
Noise:
It is the unwanted electrical energy which gets added up with the information signal at the channel.
E.g.: Noise due to lightening i.e., from the atmosphere, Internal noise due to internal agitation of atoms inside the components.
Due to noise message may get completely missed or misinterpreted.

Features of the new paragon system backup 2010 will help you to save your data from being lost. Storage of backup images can be managed by the create new storage wizard. With the help of the new paragon system backup 2010 you can take backups and store on external drives. Paragon system backup 2010 have another feature called smart backup. The smart backup feature of the new paragon system backup 2010 will take a backup in the background without much loss in the performance. Actual cost of paragon system backup 2010 is about 30 dollars. But there is a chance for you get the same for free.

How to get paragon system backup 2010 for free?

1. Goto the promotional webpage page at http://www.paragon-software.com/registration/sbrc.html
2. Fill the details in the form shown on the resulting web page.
3. Paragon System Backup 2010 RC Product Key and Serial Number will be emailed to you.
4. Download Paragon System Backup 2010 by following the link – http://dl.paragon-software.com/beta/Paragon_SystemBackup2010-rc.exe
5. Copy of Paragon System Backup 2010 can be registered with the information provided in the mail.

The Z series plasma TV of Panasonic is an ultra thin model. It is a Full-HD NeoPDP plasma TV model. Picture quality of this model is excellent. Networking capabilities of the new Viera TH-P54Z1N plasma TV is great.

Features of Panasonic Viera TH-P54Z1N:

The new Panasonic Viera TH-P54Z1N has a sub-field drive of about 600Hz.

Display of the new Panasonic Viera TH-P54Z1N plasma TV is THX certified.

Panasonic Viera TH-P54Z1N has a very high contrast ratio of about 2,000,000:1. This high contrast ration gives infinite black.

Networking capabilities of the new Panasonic Viera TH-P54Z1N is useful and quiet good.

You can view images by using the new Panasonic Viera TH-P54Z1N.

Price of Panasonic Viera TH-P54Z1N:

Price of the new Panasonic Viera TH-P54Z1N is about Rs. 328274.0

AMD Phenom II X4 955 BE, where BE stands for Black Edition, is AMD’s fastest processor they have released till now. Default clock speed of AMD Phenom II X4 955 processor is 3.2 GHz. Socket AM3 is supported by the new AMD Phenom II X4 955 in addition to AM2+ motherboards.

Memory support of AMD Phenom II X4 955

Both DDR2 and DDR3 memories are compatible with the new AMD Phenom II X4 955 processor.

Over clocking AMD Phenom II X4 955

The new AMD Phenom II X4 955 processor has an unlocked multiplier. The presence of this unlocked multiplier helps in unlocking the new AMD Phenom II X4 955.

AMD is competing with Intel’s Core 2 Quad Q9590.

Price of AMD Phenom II X4 955

AMD Phenom II X4 955 can be bought for 217.99 Euro. Indian customers would like to know the amount in INR. Price of AMD Phenom II X4 955 is 14,266.62 Rupees.