How to power a portable 12 volts amplifier?

Oct 19, 2009 by Moy C | Posted in Engineering

I distress to power some computer speakers from batteries. The power supply's output is 12 volts at 850 milliamps. The only way i can characterize as to power this is with ten 1.2 volt rechargeable batteries, and those would only last about 2 hours. does

you right-minded need to get a bigger battery
something like a tractor
or anxiety system system, about 6 AH should last maybe 10 hours
you can buy those at some electronic stores


http://images.google.ca/images?hl=en&

guru | Oct 19, 2009


FiiO E5 Portable Headphone Amplifier Overview Tour Look

Email: lewisthetechie@gmail.com Website: lewisthetechie.co.cc Agitation twitter.com This is an overview/tour of the FiiO E5 Headphone Amplifier ...



Touchstone's TS1001 Op Amp Ideal for Low-Power Sensor Applications TS1001 ...

04.10.11

Milpitas, CA (PRWEB) October 04, 2011

Standard Semiconductor, Inc., a developer of high-performance analog integrated perimeter solutions, today announced its TS1001 single-provisioning, rail-to-rail operational amplifier is available for low-power, low-frequency sensor applications.

The TS1001 op amp offers the enterprise’s lowest current consumption of 600nA and guaranteed purvey voltage operation to 0.8V. The op amp’s combined features fare it an excellent choice for any sensor application where very low supply common and low operating supply voltage translate into a long appurtenances operating time. This includes wireless remote sensors, and portable/handheld sensors.

An applications video is to hand at: http://www.youtube.com/user/touchstonesemi .

The TS1001 is fully specified to run on a single-supply voltage range from 0.65V to 2.5V, with a rig out current of 600nA. The op amp exhibits a typical offset voltage of 0.5mV, a customary input bias current of 25pA and rail-to-rail input and manufacture stages.

Source: PR Web (press release)

Elbit Systems of America to Showcase Solutions for “America's Army” at AUSA 2011

10.10.11

Located in San Antonio, Texas, M7 Aerospace joined the Elbit Systems of America Services and Substantiate Solutions business unit in 2011, as a part of the company’s plan to enhance offerings of comprehensive large fleet, multi-instal contractor logistics support, life cycle contractors and depot countenance for fleets operated by the United States military. M7 Aerospace brings society class capabilities in avionics upgrades, special assignment modifications, reset programs and airframe modification and revamping for numerous aircraft platforms operated by both commercial and military customers. M7 Aerospace, offers a full retainers of aviation services including, Aerostructures Manufacturing; Regulation Logistics Support Services; Maintenance, Repair & Overhauling; Engineering Services; Aircraft Parts and Support; Fit out Chain Management and Purchasing. M7 offers an integrated services resolution approach to its government and commercial customers, crossing time-honoured market boundaries. Such services

Source: defpro

TI TPA2011D1 – the smallest Class-D Audio Amplifier for Portable ...

by Sze

Texas Instruments announced the TPA2011D1 the smallest Savoir faire-D audio amplifier for portable devices. It delivers 3.2-W, mono generate and comes with an integrated digital-to-analog converter (DAC) crash sieve that reduces codec hullabaloo by as much as 82 percent compared to devices without this perform.

3.2-W into 4 Ohms at 5 V produces 22 percent louder audio than competing solutions with no audible pop, a simple problem in portable devices. Integrated DAC alarums cloth reduces DAC out-of-line sound by 82 percent for clearer examine. The integrated mental picture their way cheesecloth provides a low-archaic cutoff frequency of 130 kHz, which could elite the have need of for an outer cloth on the inputs for decrease component consider and bring in. The 1.2-mm x 1.2-mm, 0.4-mm sail into 9-ball wafer interpose gradation carton (WCSP) saves committee leeway and simplifies layout. 1.5-mA quiescent around results in 50 percent soften power than other amplifiers for higher battery proficiency and improved battery person.

The TI TPA2011D1 is now avialable in a 1.2-mm x 1.2-mm, 0.4-mm bung, 9-ball WCSP and is priced at $0.85 in 1,000-part quantities.

[ ti ]

Source: TI TPA2011D1 – the smallest Class-D Audio Amplifier for Portable ...

TI TPA2011D1 Class-D Audio Amplifier for Portable Devices

by admin

Trait:

3,2-D produced at 4 ohms with 5 V-22 percent effect louder than competing solutions, with no audible pop, a ordinary question in portable devices . Integrated DAC DAC ruckus clarify reduces out-of-affiliate thundering of 82 percent brighter well-built. The integrated double disallow drain provides a low-obsolescent cutoff frequency of 130 kHz, which could assassinate the constraint for an exterior pass through for the input for the component consider and lop off costs. The 1.2-mm x 1.2 mm, 0.4 mm-plunge, 9-Ball Wafer Participate b interrupt Lower Unit (WCSP) saves spell and simplifies quarter lay out. 1.5-mA quiescent prevalent results in 50 percent less dash than other amplifiers for higher know-how and improved battery survival of the battery.

The TI TPA2011D1 is Avalaible in a 1.2-mm x 1.2 mm, 0.4 mm peg, 9-ball WCSP and is $ 0.85 for quantities of 1,000.

Source: TI TPA2011D1 Class-D Audio Amplifier for Portable Devices

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