Planar Magnetic Technology for Headphones

Planar magnetic technology is being revived by a few specialist HiFi audio companies. These companies make headphones with planar drivers that are based on the old school that deliver an incredibly full, rich sound distinctive.

This paper examines the intrinsic properties of a planar magnetic device by studying winding conduction losses leakage inductance, and winding capacitance. A method is also suggested to reduce the parasitic elements.

Low profile or low vertical height

In comparison to traditional wire-wound magnetics, planar magnetic technology offers lower profile and greater efficiency. It also reduces leakage and parasitic capacitance. This also permits the use of a smaller core, which decreases the total cost of the device. It does not require the magnets to be clamped. This makes it suitable for use in power electronics devices.

Another benefit of planar magnetic headphone magnetic technology is that it is smaller and lighter than traditional headphones. It also can handle higher frequencies without distortion. This is due to the flat diaphragm which is employed in these devices, which is often made of a thin layer and is fitted with a conductor trace it. This film can react quickly to audio signals and can produce high levels of sound pressure quickly and easily.

This means that the sound produced by these devices is richer and more detailed. This is the reason why it is preferred by many audiophiles, particularly those who want to listen to music at home or office. It is important to remember, however, that the planar magnetic driver needs an amplifier that is powered and a digital audio converter (DAC) to function properly.

The resulting sound is much more natural and precise than that of dynamic drivers. Planar magnetic drivers are also able to respond much more quickly to changes in the audio signal, which is why they are ideal for listening to fast music.

Despite their advantages they have many drawbacks. Their price is partially due to the huge amount of magnetic material required to operate. Their weight and size can also be a problem, especially when they are being utilized as portable devices.

Wide band gap (WBG) devices

Wide band gap (WBG) semiconductors are a type of material which have higher electrical properties than silicon-based devices. They can handle higher current and voltage densities. They are therefore suitable for optoelectronics as well as power electronics applications. Wide band gap semiconductors, including gallium nitride or silicon carbide, can provide significant enhancements in performance and volume. They are also more eco-friendly than conventional silicon devices. These attributes make them attractive to companies that make satellites and aerospace.

Planar magnetic drivers operate in the same way as dynamic drivers. A conductor in an electrical circuit moves between magnets that are fixed when audio signals pass through them. However, instead of a coil bonded to a conical diaphragm planar magnetic drivers employ a flat array of conductors attached to, or embedded into, a film-like diaphragm which can be made thin. Conductors function as coils that are placed directly on the diaphragm and are positioned between two magnets, creating the push/pull effect that causes the diaphragm to move.

This technology creates distortion-free reproduction of music and produces a unique sound that a lot of listeners find pleasing. The uniform distribution of the magnetic force over the entire surface of the driver and the absence of a coil behind the diaphragm cause it to move evenly and quickly, producing an extremely precise, detailed sound. The resulting sound is known as isodynamic, orthodynamic, or planar magnetic headphone magnetically-incident.

However, due to their complicated design and higher price, headphones using planar magnetic drivers are usually more expensive than those using other driver technologies. That said, there are a number of excellent, affordable alternatives such as the Rinko by Seeaudio and S12 Z12 by LETSHUOER which have recently been released.

Power electronics

Planar magnetics dissipate heat more efficiently than traditional wire wound components. This allows them to handle more power without causing excessive strain or audible strain. This makes them ideal for applications such as headphones. Planar magnetics are more efficient and also provide a greater power density. This technology is especially suited for applications such as fast charging of electric vehicles batteries, battery management, and military equipment.

Planar magnetic drivers work in a different way than dynamic driver headphones. Dynamic driver headphones use a diaphragm suspended by the voice coil. 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 produced. This produces soundwaves that move the diaphragm, and create audio.

Planar magnetic devices are more efficient than conventional magnetics because they have a higher surface-to volume ratio. They are able to disperse heat more efficiently and allow for higher switching frequencies, while maintaining their maximum temperature ratings. They have lower thermal sensitivities when compared to wire-wound devices. This allows them to be used in smaller power electronic circuits.

Designers need to consider a variety of aspects to optimize a planar booster inductor. These include the core design, winding configurations, losses estimation and thermal modeling. Ideal characteristics of an inductor include low winding capacitance, minimal leakage inductance, and easy integration into a PCB. It must also be able to handle high currents and be of a compact size.

In addition, the inductor must be compatible with a multilayer PCB using a through-hole or SMD package. In addition the copper thickness has be sufficient to prevent eddy currents from entering the layers and also prevent thermal coupling between conductors.

Flexible circuit-based planar Winding

In the field of planar magnetic technology, flex circuit-based windings can be employed to make an inductor that is high-efficiency. They are constructed using dielectric films that are single-patterned and one-patterned copper foil. A common choice is copper foil, which has superior electrical properties and is processed to enable termination features on both sides. The conductors in a flex-circuit are joined by thin lines that extend beyond the edges of the substrate. This provides the flexibility needed for tape automated bonding. Single-sided flex circuits can be found in a range of thicknesses and conductive coatings.

In typical headphones, the diaphragm is set between two permanent magnets that move in response to electric signals generated by your audio device. These magnetic fields create the soundwave that runs across the entire surface of diaphragm. This piston-like motion helps prevent distortion and breakups.

Planar magnetic headphones are able to reproduce a broad range of frequencies, notably at lower frequencies. The reason for this is that the headphones with planar magnetics have a wider surface than traditional cone-shaped speakers, which lets them to move more air. They can also reproduce bass sound at a higher level of clarity and details.

However, planar magnetic headphones are expensive to make and require a powered amplifier as well as a DAC to perform effectively. They are also heavier and larger than standard drivers, making them difficult to transport. Their low impedance also requires a lot more power to drive, which can become a problem when listening to music at a high volume.

Stamped copper winding

Stamped copper windings can be used in planar magnetic closed back headphones magnet technology to improve the window utilization and reduce manufacturing costs. The method works by putting grooves on the coil body that support a layer-accurate position of the windings. This helps to prevent deformations of the coil as well as improves the accuracy of the coil. It also reduces the amount of scrap created during production and planar magnetic Headphone improves quality assurance. This type of planar coil is often used in contactor and relay coils, ignition coils, and small transformers. It is also suitable for devices with wire thicknesses of up to 0.05 mm. The stamping produces an even coil with an extremely high current density. The windings will be precisely placed.

Planar magnetic headphones, unlike traditional dynamic drivers that use a voicecoil conductor behind the thin diaphragm, have an array of conductors that are flat directly bonded to the diaphragm's thin surface. When electronic signals are applied to these conductors, they vibrate, causing a pistonic motion that creates sound. This is why planar magnetic headphones can provide better sound than other audio drivers.

This technology will increase the range of transducers. This is significant because it permits them to operate in a larger frequency range. Furthermore, it lowers the power consumption of the driver.

This new technology has certain disadvantages. For example, it can be challenging to create a diaphragm made of thin film that can withstand the high temperatures required for this type of technology. Manufacturers like Wisdom Audio have overcome the problem by creating a solution that is non-adhesive and can withstand temperatures of up to 725 degrees Fahrenheit. This allows them to produce audio of superior quality, without sacrificing durability and longevity.