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Subjects>Engineering & Technology>Electrical Engineering

What is the purpose of amplifiers?

Anonymous

∙ 15y ago

Updated: 4/28/2022

Obviously is to amplify signals

Wiki User

∙ 15y ago

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What types of applications are valve amplifiers used for?

A quick search of this incredible question brought fourth some greater insight into the matter. It turns out the applications valve amplifiers are used for vary from guitar amplifiers, satellite transponders, audiophile stereo amplifiers, military applications and high power radio and UHF television transmitters.

What is amplifier and types of amplifiers?

Amplifiers are electronic device that responds to a small input signal (voltage, current, or power) and delivers a larger output signal.

What is an AF amplifier?

AF means audio frequency. Audio Amplifiers can be subgrouped as voltage amplifiers (or pre-amplifiers) and power amplifiers. The voltage amplifier will raise the level of level of the output of a microphone from say 1 mV to 500mV or 1V. The power amplifier will be the interface between this and the load, which is a speaker. The resistance of the speaker is often 4 ohm or 8 ohm. You cannot have a speaker with 1k as resistance! As such to get say 8W output, an amplifier providing 8V will have to pump 1 amp into an 8 ohm speaker. Thus power amplifiers will have to drive a lot of current into the load. Voltage amplifiers cannot do this. A power amplifier sometimes just has unity voltage gain, but has ability to drive a lot of current into the load. Typical power amplifiers are operated in class B, where for 50% of the signal swing, one transistor provides current, and for the other 50%, the other transistor in a class B provides current into load. Class B amplifiers have cross over distortion, But this can be overcome by pre-biasing, or making the stage operate as class AB. The power amplifiers can also be used to power low resistance loads such as a step up transformer.

What is DC coupled amplifier?

A: DC couple amplifiers refers to stages of amplifiers where is the biasing is direct without adding capacitors to remove the DC component from amplifier to amplifier

What is the circuit diagram of a sense amplifier?

sensing amplifiers and its circuit diagram

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Related Questions

What are two brands of home stereo amplifiers?

Two brands of home stereo amplifiers include McIntosh and Yamaha amplifiers. Other brands that also include home amplifiers are Atlona, Russound, Onkyo, Bose, and Pyle amplifiers.

What are the most used instrument amplifiers?

The most used instrument amplifiers are also some of the most popular amplifiers namely Marshall, Crate and Fox amplifiers. The impedance of these amplifiers does not need to match making it perfect for instrument use.

Why positive feed amplifiers are called as regenerative?

The positive feed amplifiers are called regenerative because they increase the gain of the amplifiers.

Where can you purchase phone amplifiers?

One can purchase phone amplifiers at many electronic stores. Best Buy has a good selection of amplifiers to choose from. Most of these amplifiers are backed by a 90 day warranty.

Do any car amplifiers mount in the dash?

There are some car amplifiers that mount in the dash. Car amplifiers can be mount in the trunk, under the seat...

What has the author Steve C Cripps written?

Steve C. Cripps has written: 'RF power amplifiers for wireless communications' -- subject(s): Amplifiers, Radio frequency, Power amplifiers, Radio frequency Amplifiers

What car amplifiers are the most durable?

Pioneer's amplifiers are one of the most durable.

Why most transistor amplifiers are common emitter type?

because amplifiers are speakers

What is Smith Custom Amplifiers's population?

Smith Custom Amplifiers's population is 1.

When was Smith Custom Amplifiers created?

Smith Custom Amplifiers was created in 2002.

Erbium-doped optical fiber is used for what purpose?

It is used to make Erbium doped fibre amplifiers (EDFA) and also used to fabricate DFB lasers.

What are the most used instruments?

The most used instrument amplifiers are also some of the most popular amplifiers namely Marshall, Crate and Fox amplifiers. The impedance of these amplifiers does not need to match making it perfect for instrument use.

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