Electric guitars are devices that generate sound from a set of pickups that convert string vibration into electrical signals for amplification. The sound starts out as vibrations the musician creates while playing. These vibrations are picked up by the pickups of the guitar. What are pickups? Pickups are permanent magnets wrapped around in a coil. Since the strings are made with a special material called ferromagnetic, they interact with the magnetic fields in the pickups and force electrons to move in the loop. Moving electrons can generate a signal that can be read by the amplifier.
Pickups work with a bar magnet which is rapped with turns of wire. We know that magnets with coil can transform electrical energy into motion. Also motion can be turn again into electrical energy. On a pickup, the vibration in the magnets is produces by the vibration that the ferromagnetic strings make. Then at the same time in the coil there is a vibrating current.
A knob on a guitar is considered a voltage divider. There is a relation between 2 resistors; all depends on the position. If the position is somehow there is no signal being resisted to ground, in that case there is full volume. The other situation is when it is fully turned all signals are shunted out to the ground so there is no volume.
Electric guitars function without any external power. The current is created by the vibrating strings that interact with the magnetic field and coils in the pickups since a force inside a magnetic field creates the current.
A knob on a guitar is consider a simple voltage divider. There is a ratio between 2 resistors; depending on the position there is no signal being resisted to ground, in this case there is full volume. The other situation...
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Brain, Marshall. "How Electric Guitars Work" 01 July 2002. HowStuffWorks.com.
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Acoustically, an electric guitar does not have any significant volume. That is how we know the electric guitar as the "electric" guitar! A matter of fact a guitar generates its own electricity! How does it do this? The pickups are a generator of electricity. The strings are an electro-conductive and vibrate around a wire and magnet coil, thus producing an alternating current. This matches the frequency of different pitches and the current is sent to an ampl...
A brushless DC motor has a permanent magnet or magnets for the armature. The external magnetic field comes from any number of electromagnets that are turned on and off at the correct times by a timing device.
The most common type of bass guitar is an electric bass guitar. Electric basses have solid bodies. An electric bass needs to plug into a amplifier to be heard over other instruments. A bass amplifier or amp, is pretty much a powered speaker. If you get an electric bass, you will also need a bass amp. An example of a electric bass would be the one I played in the WNE. The electric bass was the only bass that the school could provide for the band but we also felt it had the right sound for the job.
Now a days, guitars are seen and heard everywhere. There are so many different types and styles. The two major categories are electric and acoustic. Electric guitars where first introduced in the 1940’s to enhance and amplify the sound of acoustic guitars. Acoustic guitars have hollow, wooden bodies. When the strings are played, the sound is amplified and echoes in the resonating body (New Grove 827).
Innovations are put forth everyday but few leave a lasting effect on their field. Whether it is the combustion engine in transportation, television in entertainment or the electric guitar in music. It is difficult to turn on the radio or any music player and avoid the ubiquity of the guitar. It has had a continuous reign on the music industry for the past century and is becoming even more popular with the addition of endless overdrive effects. The origin of this amazing instrument can be traced back hundreds of years and countless miles. Along the way many new additions were implemented. Some of which are featured in every guitar produced nowadays, including scoops, cutaways, and sound holes. The sound hole is the hole in the center in which the sound travels through, the number and size can vary based on what sort of sound needed. Scoops are the flexed indents on the sides on which the guitars rests on the players leg, and a cutaway is a portion of the base of the neck that looks like it has been removed for easier access to the higher frets. Many variations of the electric guitar have been produced to this day and each one has had an effect on its progression and impact in the realm of musical instruments
...al so when the core pushes up the cone reacts in the same way. As a series of signals are sent to the speaker it causes the cone to vibrate causing a sound wave to radiate from the speaker. As the sound waves leave the speaker they should arrive at your ears shortly, then you can enjoy the musical presentation!
... Physics." .::. The Pysics of Electric Guitars :: Physics. N.p., n.d. Web. 26 May 2014. .
The inner workings of the turntable may seem complex at first but after reading this paper it should become clear that, like all things, the record player works on basic principals of physics. In fact, the turntable is remarkable in that the basic physical principles behind it are quite simple. Some of these will be explored here. Please enjoy your visit.
There are a few parts of sounds waves that we should be familiar with to better be able to understand the physics of music. The crest is the highest point of a wave, while the trough is the lowest. The wavelength of a wave is the distance between two adjacent ...
electricity as the “fuel” instead of gasoline or some other combustible fuel. The electric motor in
Magnets are stones that produce magnetic fields. The magnetic field is invisible, but is responsible for the most noticeable aspect of a magnet: the attraction of a metal object or the repulsion of another magnet. Magnets are used in common everyday household items: credit cards, TVs, speakers, motors, and compasses. A magnets strength is measured by its magnetic moment. (“Magnetism”)
A magnet can be made from different materials, but loadstone is the natural form. The most important part of magnetism to make electric motors work is: A magnet has two different ends, or poles a north and a south pole. These poles behave like electric charges, like poles repel and unlike poles attract although magnets have no affect on still charges. The relationship between electricity and magnetism is that each phenomenon is that each generates a field. Electric fields can be pictured by thinking in terms of gravitational forces. Where, any two objects have a gravitational force one another. Any two electric charges have a force between them (either repelling, or attracting depending on polarity). These electric fiel...
...placing a soft metal core (commonly an iron alloy) inside a coil of wire through which electric current passes in order to produce a magnetic field. The strength and polarity of the magnetic field changes depending on the magnitude of the current flowing through the wire and the direction of the current flow. While there is sufficient flow of current, the core behaves like a magnet; however, as soon as the current stops, the magnetic properties also disappear. Modern devices that make use of electromagnets are the televisions, telephones, computers and electric motors.
The phenomenon called electromagnetic induction was first noticed and investigated by Michael Faraday, in 1831. Electromagnetic induction is the production of an electromotive force (emf) in a conductor as a result of a changing magnetic field about the conductor and is a very important concept. Faraday discovered that, whenever the magnetic field about an electromagnet was made to grow and collapse by closing and opening the electric circuit of which it was a part, an electric current could be detected in a separate conductor nearby. Faraday also investigated the possibility that a current could be produced by a magnetic field being placed near a coiled wire. Just placing the magnet near the wire could not produce a current. Faraday discovered that a current could be produced in this situation only if the magnet had some velocity. The magnet could be moved in either a positive or negative direction but had to be in motion to produce any current in the wire. The current in the coil is called an induced current, because the current is brought about (or “induced”) by a changing magnetic field (Cutnell and Johnson 705). The induced current is sustained by an emf. Since a source of emf is always needed to produce a current, the coil itself behaves as if it were a source of emf. The emf is known as an induced emf. Thus, a changing magnetic field induces an emf in the coil, and the emf leads to an induced current (705). He also found that moving a conductor near a stationary permanent magnet caused a current to flow in the wire as long as it was moving as in the magnet and coiled wire set-up.
Electrical motors function by converting electrical energy into mechanical energy by using the energy stored in the magnetic field (Sarma, 1981). The mechanical energy (torque) is produced when opposing magnetic fields try to lineup. Therefore, the center line of the north pole of a magnetic field is directly opposite to the centerline of the south pole from another magnetic field (Fitzgerald et al., 1981). The opposing magnetic fields in a motor are generated by two separate concentrically oriented components, the stator and a rotor (Figure 2-5).