Where Is Planar Magnetic Technology One Year From This Year

Planar Magnetic Technology for Headphones

Planar magnetic technology is being revived by a few specialist HiFi audio companies. These companies create headphones with traditional planar drivers that produce a a rich sound signature.

This paper focuses on the fundamental features of a planar magnet device by studying the inductance of the winding, leakage capacitance and winding conduction losses. A method is also proposed to reduce the parasitic elements.

Low profile or low vertical height

Planar magnetics are more efficient and have a lower profile than wire-wound magnets. It also minimizes parasitic capacitance and leakage inductance. This technique allows for the use of a smaller core used, which lowers the cost of the device. Additionally, it does not require any clamping of the magnets. This makes it suitable for use in power electronics devices.

planars headphones of planar magnetic technology is that it is smaller and lighter than traditional headphones. It also can handle more frequencies without distortion. This is due to the diaphragm, which is flat, used in these devices is often constructed from a thin layer with a conductor trace. This film is able to react quickly to audio signals and create high sound pressure levels easily.

As a result, the audio that these devices produce is more rich and detailed. This is why they are popular with audiophiles, specifically those who want to listen to music in their home or office. It is important to keep in mind that a planar magnetic driver requires a powered amplifier and digital audio converter to work properly.

The sound that is produced is more natural and precise when compared to dynamic drivers. Planar magnetic drivers are capable of reacting to changes in audio signals faster, making them perfect for listening fast music.

Despite their benefits however, planar magnet drivers do have a few disadvantages. Their cost is partially due to the large amount magnetic material needed to operate. Another issue is their size and weight that could pose an issue when trying to make them portable.

Wide band gap (WBG) devices

Wide band gap (WBG), semiconductors are a group of materials with higher electrical properties than conventional silicon-based devices. They can withstand higher voltages and current density. This makes them ideal for power electronics and optoelectronics applications. Wide band gap semiconductors, such as gallium nitride or silicon carbide, can provide significant improvements in performance and size. They are also more eco-friendly than traditional silicon devices. These features make them attractive to aerospace and satellite manufacturers.

Planar magnetic drivers operate using the same principles as dynamic drivers. Conductors of electricity move between two magnets that are fixed when audio signals pass through them. Planar magnetic drivers, however, employ an array of conductors embedded or attached to a thin diaphragm-like film instead of a coil. The conductors comprise made up of coils that sit on the diaphragm and sit directly between two magnets. This creates the push/pull effect that triggers the diaphragm's to move.

This technology produces distortion-free music and has a unique, pleasing sound. The uniform distribution of the magnetic force over the entire surface of the driver and the absence of a coil behind the diaphragm causes it to move uniformly and quickly, producing high-quality, precise sound. The resulting sound is known as isodynamic, orthodynamic, or magnetically-incident.

However, due to their complex design and higher price point headphones that use planar magnetic drivers are usually more expensive than headphones with other driver technologies. However, there are a number of affordable, high-quality options like the Rinko by Seeaudio and S12 / Z12 by LETSHUOER that were recently released.

Power electronics

Contrary to conventional wire wound magnetic components planar magnetics are better at dissipating heat. This lets them handle more power without causing excessive stress or audible strain. This makes them perfect for applications such as headphones. Planar magnetics are more efficient and provide a higher power density. The technology is especially designed for applications such as electric vehicle charging, battery management and military systems.

Compared to dynamic driver headphones, which utilize a diaphragm suspended by a voice coil planar magnetic drivers work on a much different principle. When an electromagnetic signal is sent through the array and the magnets on the opposite sides of the diaphragm are pulled together and a push-pull effect is created. This creates sound waves that move the diaphragm, producing audio.

Planar magnetic devices are more efficient than conventional magnetics due to the fact that they have a higher surface-to-volume ratio. This means they are able to disperse more heat, allowing them to operate at higher switching frequencies without exceeding their maximum temperature ratings. They also have lower thermal sensitivities than wire-wound devices, which allows them to be used in more compact power electronics circuits.

Designers must consider several factors to optimize a planar booster inductor. These include core design winding configurations, winding configurations, losses estimation and thermal modeling. Ideal inductor characteristics include low winding capacitance, low leakage inductance, as well as easy integration into the PCB. Furthermore, it should be able to handle high currents and be of a small size.

The inductor also needs to be compatible with multilayer PCBs using through-hole or SMD package. The copper thickness should be sufficient to prevent thermal coupling and to limit the eddy-currents between conductors.

Flexible circuit-based planar Winding

In planar magnetic technology, flex circuit-based windings are utilized to create an inductor with high efficiency. They are constructed using dielectric films that are single-patterned and one-patterned copper foil. The most common is copper foil, which has superior electrical properties and is processed to allow termination features on both sides. The conductors on a flex circuit are connected with thin lines that extend beyond the edges of the substrate, providing the flexibility required for tape automated bonding (TAB). Single-sided flexes are available in many different thicknesses and conductive finishes.

In a typical pair of planar headphones, the diaphragm will be placed between two permanent magnets that vibrate in response to the electric signals that are sent by your audio device. The magnetic fields create an audio wave that travels across the entire surface of diaphragm. This piston-like motion prevents breakups and distortion.

One of the primary advantages of planar headphones is their ability to reproduce a larger frequency range, particularly in the lower frequencies. This is due to the fact that they can create a greater surface area than traditional cone-type drivers, which allows them to move more air. Moreover, they can also reproduce bass sounds with a much higher clarity and clarity.

Planar magnetic headphones can be expensive to make and require a powered amplifier as well as a DAC to function properly. Additionally, they are larger and heavier than traditional drivers, which makes them difficult to transport or fit into smaller spaces. Their low impedance requires much more power to drive, which could quickly add up when you listen to music at high volume.

Stamped copper winding

Using stamped copper windings in planar magnetic technology can improve the window utilization factor and cut down on manufacturing costs. The technique works by placing grooves on the body of the coil that ensure a layer-accurate placement of the windings. This technique prevents deformations in the coil and improves the tolerances. It also reduces the amount of scrap produced during production and enhances quality assurance. This kind of planar coil is often used in contactor and relay coils, ignition coils and small transformers. It can also be used in devices with a wire thickness of up to 0.05 mm. The stamping process produces an even winding that has high current density. It also ensures that the windings are properly positioned on the coil body.

Planar magnetic headphones, unlike traditional dynamic drivers that employ a voicecoil conductor behind the diaphragm's thin surface, feature an array of conductors that are flat directly connected to the diaphragm's thin surface. Conductors vibrate when electronic signals are applied. This creates the motion of pistons that produce sound. Planar magnetic headphones provide higher-quality sound compared to other kinds of audio drivers.

In addition to reducing weight and costs, this technology can also increase the bandwidth of planar magnetic transducers. This is crucial since it allows them to operate in a greater frequency range. It also reduces the power requirements of the driver.

This new technology has some disadvantages. It can be difficult to design a thin-film diaphragm capable of withstanding the high temperatures needed for this type of technology. Manufacturers like Wisdom Audio have overcome the issue by introducing a product that is non-adhesive and is able to withstand temperatures as high as 725 degrees Fahrenheit. This allows them to produce audio of superior quality without compromising durability or longevity.

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Pub: 21 Mar 2024 16:27 UTC

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