Category: Hardware

Percussion Instruments

A percussion instrument is an instrument that produces sounds by striking, hitting, scraping or shaking. Every orchestra has a percussion section, which includes instruments such as snare drum, bass drum, cymbals, triangles and tambourines, and might also have other non-percussion instruments. All percussion instruments are capable of keeping a certain rhythm, make peculiar sounds and…
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Keyboard Instruments

A keyboard instrument is a musical instrument that is played with a keyboard. The most popular keyboard instruments are pianos, organs and electronic keyboards, such as synthesizers and digital pianos. Keyboard instruments also include celestas and carillons. The term keyboard is often used to describe keyboard-style synthesizers and the keyboard itself can be used to…
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Guitar Amplifiers and Cabinets

Let’s start with the basics. A guitar amplifier is a device that amplifies the signal. It’s a unit that is capable of strengthening an audio signal that is provided from an electric guitar, an acoustic guitar or bass guitar. After that, an altered signal is sent through a loudspeaker that is generally inside a cabinet.…
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Amplifier

An amplifier, also known as an electronic amplifier or amp, is an electronic device that is able to increase the power of a signal. This signal varies in time, voltage or current. An amp is an electronic circuit that has two ports and it uses electric power that is generated from a power supply in…
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Class A Amplifier

The Class A amplifier is the simplest form of a power amp because, in order to produce an inverted output, it uses a single switching transistor in its standard configuration. Since the transistor is always ON, it is able to conduct during the complete cycle of the input signal waveform. The Class A amplifier configuration…
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Class B Amplifier

When in an inactive state, the Class B amplifier has many advantages over the Class A amp because no current flows through the transistors. Neither the output transistors nor the transformers dissipate any power when the signal is OFF. On the other hand, Class A amps require a substantial amount of base bias, so, it…
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Class AB Amplifier

A Class AB amplifier is a combination of Class A and Class B type amps and it’s also a variation of a Class B amplifier. Both Class A and Class B amps conduct at the same time around the waveform’s crossover point, removing the crossover distortion conflicts of the former Class B amplifier. The Class…
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Class G/H Amplifier

A Class G/H amplifier is used interchangeably to refer to different designs that boost Class AB output stages. The terms vary from one manufacturer to another. These devices are commonly used in large audio amplifiers and have effective techniques that allow them to achieve greater efficiency with low distortion.  Class G amplifiers use rail switching…
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Early Drum Machines

The first programmable drum machine was invented by an Arab engineer and appeared in The Book of Knowledge of Ingenious Mechanical Devices, centuries ago. The first drum machine was a musical device performed by four robots that entertained the royal crowd by floating on a lake. Two of the robots were drummers who were able…
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Class D Amplifier

A Class D amplifier, also known as a switching amplifier, is an electronic amp in which the transistors operate as electronic switches. These transistors are usually MOSFETs and operate by switching back and forth between the supply rails. These transistors are fed by a modulator using diverse techniques that encode the audio input into a…
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