Best Amplifiers Online Information Guide

Manufacturer of guitar amplifiers, metal guitar amplifiers, rock guitar amplifiers, and high gain guitar amplifiers.

Amplifiers, precision op amps, video amplifiers, variable gain amplifers (VGA), analog multiplexers, buffers, comparators, low voltage op amps,

Battery Tips

By ajay pats

This article briefly summerises steps on checking battery.
Using a voltmeter to check battery terminal connections:

An automotive starter can draw up to several hundred amps when starting a car or truck engine. Poor connections at battery terminals can often cause a loss of voltage (and power) to the starter. You can use a voltmeter to check the quality of the terminal connection and to check the battery and charging voltage. If you do not already have a voltmeter, they are normally available at Radio Shack, some auto or building supply stores, or mail order companies. The easiest to use is an auto-ranging type, that allows you to set only the function (such as D.C. Volts), and the meter selects the proper voltage range.

What you measure: If you have a poor connection at a battery post, there will be a voltage difference between the post of the battery, and the terminal when something on the car is drawing current. The more current, the larger the voltage difference. A connection may look fairly good, yet still have a voltage drop.

To check the positive terminal, set your voltmeter to DC Volts. With the car off, place the positive lead of the of the voltmeter on the positive battery post, and the negative lead on the cable terminal that clamps around the positive post. If your voltmeter is not an autorange type, set it to about a 2 volt range. Turn on the headlights, if the connection is good, the voltage will be zero, or a few millivolts ( 1 mV = 0.001 Volt). If you read in the tens or hundreds of millivolts (100 mV= 0.1 volt), a cleaning of the terminal may be in order.You can repeat this test for the negative terminal, except reverse the leads from the voltmeter. Side mount terminals will be a bit more tricky, but if you can get access to the bolt and the terminal on the cable, the same process should work.

Battery post cleaning tools are available at auto parts stores. The author has found, at the recommendation of a former auto company engineer, Permatex Dielectric Tune Up Grease does a good job of reducing corrosion after a good cleaning, and allows for a good connection. Spread a very thin coat on the terminals.

Battery voltage and charging voltage

While you are at it, if you are having trouble starting your car, you can measure your battery voltage (remember to set the range up on manual meters to around 20 volts). The - terminal on the meter goes to the negative battery terminal, and + to positive. A fully charged battery will measure around 12.6 - 13.2 volts with the car off. With the car running, you can measure the battery voltage at idle with lights, and accessories off. Most cars will charge from around 13.2 to 15 volts. If it is lower, check your connections, belt tension on the alternator, and the alternator. If the voltage is high, you may have a defective regulator (often inside the alternator - so you have to replace the alternator). Alternators can fail gradually, with a bad diode, for example. In this case the alternator may still work, however not be able to keep up with accessories such as lights and the heater / air conditioner. When this happens, the car battery may slowly run down.

About the Author

Ajay Patole is a qualified management professional working as sales manager and runs a site 'Venturemall',a cool hangout to play money games,buy and sell in auctions,date and photochat.It is available at URL http://venturemall.tripod.com and newsletter to rediscover true colors of life at http://www.topica.com/lists/venturemall.Also he runs a community 'Venturecon', for entrepreneurs which is available at URL http://groups.msn.com/venturecon.

This article courtesy of http://caramplifiersguide.info/.
You may freely reprint this article on your website or in
your newsletter provided this courtesy notice and the author
name and URL remain intact.

ELAN™ D1650 Digital Power Amplifier To Make Public Trade Debut at CEDIA EXPO 2004

By Anonymous

INDIANAPOLIS, IN September 10, 2004 -- CEDIA BOOTH #302 -- ELAN™ Home Systems’ new, whole house D1650 digital power amplifier will make its public trade debut at CEDIA Expo 2004 to be held from September 10 through 12 in Indianapolis, Indiana. Privately previewed for a select group of ELAN’s Dealers in May 2004 at the first annual ELAN TRIO Summit, the D1650 is ELAN’s highly-anticipated second all-digital amplifier introduction in the ELAN D Series. The D1650 features 16-channels of amplification, Class-T digital technology and 900+ watts of power at an 85-percent efficiency rating, and can simultaneously deliver 60 watts at 4 Ohms to each of its channels. The announcement was made by Bob Farinelli, ELAN’s President and Chief Technology Officer.

Said Bob Farinelli, “The D1650 is the second in our D Series family of all-digital amplifiers. These two amps have been designed as a family, to provide specialty Dealers with a whole new, premium class of amplifiers at an affordable price. With this new amp and the D1200, Dealers also now have the flexibility to select whichever product best suits their job – more power or greater number of channels. The D1650 was also developed to be a companion piece to our company’s System12 eight zone a/v controller, providing high-quality, stereo audio to System12’s eight zones.”

Clean, cool, cost effective and small in size, yet big in power, the D1650 can drive up to eight pairs of stereo speakers, 16 mono speakers or any combination of the two. And, because it is stable down to 4 Ohms, multiple speakers can be connected to each channel without the need for impedance-matching volume controls. The D1650 has far more power and channels, yet emits less heat than traditional amplifiers.

”Since the release of ELAN’s multi-award-winning D1200 12-Channel Digital Amplifier last Fall, demand has continually exceeded our supply. Based on this history and the phenomenal reception the D1650 received from our Dealers at TRIO, we are anticipating very strong orders and are confident that it will prove to be a pacesetter in the custom installation amplifier market,” remarked Paul Starkey, ELAN’s Executive Vice President.

As a result of the D1650’s cool-running digital technology, it can be installed in enclosed areas such as custom cabinetry without the worry of it overheating itself or other components. In addition, the unit is slim at three rack spaces high, instead of the five-rack height of non-digital amplifiers with comparable power ratings.

Designed for the specialty Dealer, the D1650 features two stereo buses which automatically route one set of inputs to other channels, eliminating the need for extra patch cables, and a buffered loop output for each channel, allowing for the easy configuration both stereo and mono listening areas.

The D1650 and its companion amplifier, ELAN’s D1200, are the only digital amps with anti-clipping features, which are provided by ELAN’s patent-pending ACE™ (Automatic Clip Eliminator™) technology. ACE is a microprocessor-controlled dynamic leveling circuit that eliminates clipping without the typical audio degradation of traditional compressor-based clipping circuits.

The D1650 will begin shipping in the fourth quarter of 2004 at a MSRP of $2,199 and will come with a two-year manufacturer’s warranty. The unit will also be available in a rack mount version with handles (D1651) at a MSRP of $2,249.

About ELAN Home Systems:
ELAN Home Systems is a leading manufacturer of innovative, award-winning distributed audio/video and home automation systems. Based in Lexington, KY, the company’s systems were the first to integrate audio, video, phones and third-party products to create a seamless, easy-to-use “whole house” experience. The company’s unique products provide complete lifestyle, feature-rich solutions, yet can be configured to fit the specific needs of every homeowner. ELAN products are distributed through a comprehensive channel of select dealers and distributors throughout the United States, Canada and 58 countries worldwide. To learn more, visit www.elanhomesystems.com.

ELAN is a trademark of ELAN Home Systems, LLC, Lexington, KY. VIA! , D1200, D1650, are trademarks of ELAN Home Systems, LLC. All other trademarks are property of their respective owners.



This article courtesy of http://caramplifiersguide.info/.
You may freely reprint this article on your website or in
your newsletter provided this courtesy notice and the author
name and URL remain intact.

Inphi Corporation Extends 10 Gbps Transimpedance Amplifier Leadership with Two Flagship Products

By Anonymous

WESTLAKE VILLAGE, Calif., April 7, 2003  Extending its market leadership in receiver components for optical and broadband communications systems, Inphi Corporation today announced two new transimpedance/limiting amplifiers (TIA/LIAs). The InphiŽ 1342TL and 1343TL provide unsurpassed performance and flexibility for a wide range of applications, including 10 Gbps Ethernet, SONET/SDH optical receiver modules, and broadband instrumentation. For the first time, receiver module manufacturers have access to integrated TIA/LIAs with power dissipation as low as 100 milliwatts (mW), thereby reducing bill of materials and manufacturing costs while meeting strict multisource agreement (MSA) power budgets. These OEMs previously relied on a separate LIA to amplify signals from a TIA, which consumed as much as 490 mW of power.

“The fact that Inphi has achieved power dissipation as low as 100 milliwatts with their new TIAs represents a significant milestone in communications technology,” said Dr. Nobuo Shiga, general manager of the Electron Device Department at Sumitomo Electric Industries in Yokohama, Japan. “This development is an important step toward enabling module manufacturers to meet the stringent power requirements for SFP transceivers.”

“We asked the top five optical manufacturers what would significantly change the playing field for TIAs, and they cited lower power consumption as their primary requirement,” said Ashok Dhawan, president and CEO of Inphi. “At 100 milliwatts for an integrated TIA/LIA with more than 23 decibels of dynamic range, Inphi has more than hit the mark. The high gain, wide dynamic range, and improved sensitivity of the new Inphi TIA/LIAs, together with their low power consumption and cost, will deliver SONET performance at Ethernet cost to all network reaches.”

Features and Benefits
The 1342TL and 1343TL support data rates up to 10.7 Gbps and consume 140 mW and 100 mW of power, respectively. Both exhibit high gain, excellent input sensitivity, and low input noise to maximize receiver quality. The 1342TL includes DC slice level adjust and receive signal strength indicator (RSSI) to simplify fiber alignment during package assembly. The exemplary performance of these TIAs is evidenced by the highly symmetric output eye of the 1342TL. Moreover, the 1342TL yielded a bit error rate of 10–12 after 80 km of single mode fiber, even with no dispersion compensation included in the link.

The 1342TL and 1343TL are available for immediate purchase in die form in sample quantities, with volume production beginning in the second quarter of 2003. Unit pricing for the 1342TL is $33 for production quantities of 10,000 units.
About Inphi

Founded in November 2000, Inphi Corporation is a privately held electronic components company based in Westlake Village, California. Inphi delivers high-speed integrated circuits that optimize power, performance, and size, enabling customers to build the highest performance, most cost-competitive telecommunications, data communications, and instrumentation systems. Additional information about the company can be found at www.inphi-corp.com.




This article courtesy of http://caramplifiersguide.info/.
You may freely reprint this article on your website or in
your newsletter provided this courtesy notice and the author
name and URL remain intact.

Home