Definition Amplifier is an electronic component that is used to strengthen the power or energy in general. In use, the amplifier will amplify the sound signal that strengthens the signal current I and voltage V of electrical input. And the output will be the electric current and voltage greater.
The magnitude of the sense amplifier is often called by the term gain. The value of the gain is expressed as a function of frequency of an audio amplifier, power amplifier gain between 200 times and 100 times of the output signal. So the gain is the result of the power at the output of the power at the input in the form of a function of frequency. Size gains customarily wear decible (dB).
In the section on the process of strengthening the sense amplifier audio is divided into two important parts, namely the signal amplifier voltage (V), which mostly uses Darlington transistor arrangement, and part of the parallel transistor current amplifier arrangement. Each large power transistors and uses cooling fins to dissipate heat into the air, so at this point many are using complementary symmetry transistors.
Power amplifier assembly serves as the final amplifier and preamplifier heading to drive the speakers. The sense amplifiers are generally divided into two, namely power amplifiers and integrated amplifiers. Power Amplifier is an amplifier that is not accompanied by the end of the tone control (volume, bass, treble), the opposite end integrated amplifier is an amplifier that has been accompanied by a tone control.
Types of Amplifier has varied as OTL, BTL and OCL that has been frequently used in the market. And each type of component and the sense amplifier has its own advantages and disadvantages of each. Here we explain one by one:
OTL (Output Transformer Less = output without transformer), the amplifier circuit using transformers instead Elco, suppose the value of 2200uF for amplifiers that have a large wattage. Generally voltage amplifier circuit is only + (positive) and - (negative / ground).
BTL (Bridge Transformer Less), the OCL Amplifier circuit combined with the method Bridge (bridge). So the power output is 2 times the power amplifier OCL circuit.
OCL (Output Capacitor Less = output without capacitor), the amplifier circuit having a circuit schematic of a transistor / IC final amplifier directly to the speaker output (without any intermediaries). These amplifiers are generally symmetrical voltage is + (positive), 0 (zero), - (negative).
Here the authors only provide the basic theory of the amplifier, and for the development of the invite writers to compose himself.
Thank you for reading this article. Written and posted by Bambang Sunarno. sunarnobambang86@gmail.com
author:
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name: Bambang Sunarno.
http://primadonablog.blogspot.com/2014/02/you-need-to-know-about-amplifiers.html
DatePublished: February 21, 2014 at 17:58
7MHPNPADAEFWTag ; You Need to Know About Amplifiers, amplifiers
