For a custom designed eci planar transformer, complete the custom planar transformer design worksheet, and forward to eci. Magnetics designer produces a complete transformer or inductor design based upon electrical specifications, including a winding sheet report and a. Modeling and design of planar integrated magnetic components. Hifiman ananda overear fullsize planar magnetic headphones with high fidelity. Planar magnetic components consisting of a ferrite magnetic core and numerous conductorinsulation layers have been in use for many years.
Magnetics builder magnetic design software, design. Are the best audiophile headphones planar magnetic. Magnetics design tools assist engineers in optimizing their magnetics components. Magnetics designer produces a complete transformer or inductor design based upon electrical specifications, including a winding sheet report and a spicecompatible model with parasitics. Monolith m1060 over ear planar magnetic headphones blackwood with 106mm driver, open back design, comfort ear pads for studioprofessional 4. A view of my diy planar driver, it has 7 rows of n50 neodymium magnets arranged with a thin membrane which has aluminium traces running perpendicular to the magnetic field. Other advantages of planar include integrated planar magnetics, where the output inductor is combined with the transformer, resulting in an overall reduction in space. Like a standard dynamic headphone, planar magnetic headphones use the magnetic field around a conductor that has electrical current flowing through it to drive the diaphragm. Compare these speakers to any other high performance design.
For the membrane i used ordinary plastic cling film. The objectives of this thesis are to design planar magnetic devices based on. The isine10 iems sounds and looks like no others, an innovative design without a care for the same old status quo of balanced. Modeling and design of planar integrated magnetic components by shen wang dr. As a result, these planar magnetic drivers manage to best even other strong planar magnetic designs in terms of both detail and dynamics. The black lines are actually aluminium traces which i have covered with a black marker pen more on that later. The tida00688 reference design provides isolated 15v and 5v outputs in a very thin form factor with only 2. Planar magnetic devices offer several advantages over their conventional counterparts. Thus, planar magnetic designs have been the choice of smps. Magnetic builder magnetic design software, inductor and transformer design tool poweresim is a free webbased software providing power supply smps design, transformer design, magnetic design, loss analysis, thermal analysis, waveform analysis, mtbf analysis, bom building, dvt analysis and optimization of power supply smps. A superb planar magnetic headphone that not only sounds incredible, but is quite easy to drive as well for a planar magnetic design. The design of planar transformer structure is further accomplished in the magnetic element design software ansoft pexprt, and the leakage inductance and loss of planar transformer is simulated in the finite element analysis software maxwell 2d.
Pcbs in 2, low profile ferrite ei cores, in an open framed quarterbrick package. Specialized wire types like those used in planar magnetics can also. Magnetics designer software makes transformer and inductor design easy. Design of mhz level planar transformer and analysis of. In a new white paper, design of high power planar magnetics for a 1. Magnetics designer is a standalone software program for windows that. Simulation to improve the magnetic field in the straight. This is achieved by integrating the transformer directly into the pcb. It is a tool for user to create hisher own magnetic component inductor and transformer by selecting different ferrite core, bobbin type and winding method. Beijing institute of technology, 1995 a thesis submitted in partial fulfillment of the requirements for the degree of master of science in the department of electrical and computer engineering in the college of engineering and computer science. Planar cores are widely used in application which require low profile magnetic devices eg.
Thus, planar magnetic designs have been the choice of smps designers in their drive to miniaturize power supplies while achieving a higher power density and improved overall circuit behavior. According to the simulation design, the layout of the printed circuit board of transformer is made. Additional references are included to assist with more involved designs. Sep 03, 2019 well like all the other headphones, the planar magnetic headphones also have a magnet inside them but unlike the dynamic headphones, the magnetic force that is present in the planar magnetic drivers is equally distributed throughout every zone immersed by the electrical conductors. Sme planar magnetics design guide standex electronics.
Odendaal, cochair electrical engineering abstract recently planar magnetic technologies have been widely used in power electronics, due to good cooling and ease of fabrication. Headphones create sound by causing a thin and lightweight sheet of foil, the diaphragm, within their driver to vibrate. How planar magnetic headphone drivers work innerfidelity. Formula 3 together with the fit parameters can be inserted into a computer program which makes it possible to calculate the power losses for arbitrary wave forms. The nature of planar magnetic designs make it relatively easy to design them to either be dipole radiating equally and in opposite phase in front of and behind the speaker, like esls or monopole radiating only in the forward direction, more like a traditional dynamic speaker. Design, modeling, and analysis of a compact planar transformer. Blue microphones ella premium planar magnetic headphones. The dcdc converter used in this presentation utilizes switchmode power conversion circuitry to deliver a highly efficient power source in a very low profile presentation. Featuring the narrowest bezels, most flexible mounting systems and slimmest. Limitation with manufacturing techniques and raw materials stunted the growth of planar speakers and as a result, cone and compression speakers garnered the attention of the emerging professional audio industry. Blue ella planar magnetic headphone musicians friend. Magnetics builder magnetic design software, design magnetic.
Blon b20 fullsize planar magnetic wood overear open back hifi headphone. Theres so much information, in fact, that achieving a comprehensive understanding of what the technology is, and why you should care, can be a little challenging. Well like all the other headphones, the planar magnetic headphones also have a magnet inside them but unlike the dynamic headphones, the magnetic force that is present in the planar magnetic drivers is equally distributed throughout every zone immersed by the electrical conductors. After that fem simulators are introduced to numerically compute the winding loss. Mar 05, 2020 massachusettsbased andover audio has introduced overear planar magnetic headphones that can be driven by any audio source, including smartphones and portable music players. Andover unveils its first planarmagnetic headphones sound. For the rectangular planar dc magnetron sputtering system used in large area coating, it is significant to improve the target utilization. As a result, our drivers are able to move very large volumes of air with a fluid range of motion. Dynamic drivers are the most common configuration for both headphones and speakers.
Planar magnetics design for lowvoltage dcdc converters. Sme planar magnetics design guide showcases a variety of standard sizes in patented planar transformer and inductor designs, which are tooled and ready for standex electronicss application engineering experts to customize for specific applications. This piece of work deals with the modeling and design of planar integrated magnetic component for power electronics applications. Oct 02, 2012 a view of my diy planar driver, it has 7 rows of n50 neodymium magnets arranged with a thin membrane which has aluminium traces running perpendicular to the magnetic field. This paper discusses the design and use of lowtemperature 850c to 950c cofired ceramic ltcc planar magnetic flyback transformers for applications that require conversion of a lowvoltage. Planar magnetic technology was first developed in the 1920s during the same decade that conventional cone speakers were created. Magnetic planar vs electrostatics this is a hopefully relatively unbiased view of the differences between a magnetic planar and an electrostatic. Ella combines the transparent detail of planar magnetic drivers with the impact of dynamic technology to deliver a detailed listening experience with immense emotional impact. Superb audio performance that utilizes planar magnetic drivers for precision closedback design offers more versatility disliked. High frequency operation of magnetic components is a key to achieve high power density and miniaturization. View information on our planar magnetic audiophile loudspeakers and contact our dealers for purchase info. The magnetic field in the straight section of the magnetron is the key factor for target design, which could be designed and improved by 2d finite element method conveniently. Simulating planar magnetic components fact or fiction.
Simulating planar magnetic components fact or fiction webinar. Hifiman he400i over ear fullsize planar magnetic headphones adjustable headphone with comfortable earpads openback design easy cable swapping. In this application, the core is used as a saturating device to regulate secondary or tertiary, etc outputs in. Magnetic levitation stage with planar motor philips. This design integrates standalone and integrated planar magnetic devices which are comprised of 4 multilayer pcbs in 2, low profile ferrite ei cores. Because of the everexpanding capabilities of the manufacturing industry and the many complex manufacturing processes involved in planar magnetics, designers are encouraged to develop and maintain good communication with their vendors. The basic idea is the same magnets that cause the movement of a diaphragm, but the design is completely different.
Jun 28, 2017 magnetic levitation stage with planar motor june 28, 2017 magnetic levitation maglev stages have been the subject of research and development projects since the 1980s, with the aim of creating freefloating highprecision positioning stage. This article was originally published on may 11, 2011and has been edited and rewritten with additional information for the headphone 101 series. May 27, 2018 the design of planar transformer structure is further accomplished in the magnetic element design software ansoft pexprt, and the leakage inductance and loss of planar transformer is simulated in the finite element analysis software maxwell 2d. However, the design of these components is not a trivial task.
May 11, 2011 like a standard dynamic headphone, planar magnetic headphones use the magnetic field around a conductor that has electrical current flowing through it to drive the diaphragm. Oppo boasts that the planar magnetic drivers in its its pm1 audiophile headphones offer superior phase coherency since all parts of the diaphragm are vibrating in. Magnetics designer is a standalone software program for windows that designs all types of layer and sectorsplit bobbin wound transformers and inductors, and generates a corresponding spice model. Magnetic builder magnetic design software, inductor and. In this application, the core is used as a saturating device to regulate secondary or tertiary, etc outputs in switchmode power supply smps. Engineering drawing will be automatically produced to reduce user work load.
All of audezes headphones are planar magnetic as opposed to dynamic. Magnetics magamp designer is a software program intended to assist design engineers in the selection of a permalloy tape wound core for use in magnetic amplifiers magamp. Audezes planar magnetic drivers feature some of the largest and most flexible diaphragms in the business. This paper discusses the magnetic fields within the planar structure and their effects on the distribution of high frequency currents in the windings. Topic 4 designing planar magnetics texas instruments. Planar magnetics pcb design an alternative to conventional core shapes.
Throughout my 25 years in the computeraided engineering industry, some of the smartest people i know have told me that you cant use simulation to design planar magnetic transformers. Inductor transformer, coil, with different ferrite or powder core material. Its been around for decades, long before it was adapted for use in headphones, and theres an abundance of information available online. The design of a multilayer planar transformer for a dcdc converter with a resonant inverter magdalena puskarczyk, radoslaw jez abb corporate research center, a starowislna st. Targeted to specific applications, each software package offers a core selection routine and contains online help to guide design engineers through the selection and optimization process. Magnetic builder is a useful magnetic design software. Design of planar power transformers elna magnetics. Like dynamic headphone drivers, planar magnetic headphone drivers use the electromagnetic interaction of a conductor with an audio signal on it immersed in the magnetic field of permanent magnets. Massachusettsbased andover audio has introduced overear planarmagnetic headphones that can be driven by any audio source, including smartphones and portable music players. Frontend design synthesis software streamlines the model creation.
Magnetic levitation stage with planar motor june 28, 2017 magnetic levitation maglev stages have been the subject of research and development projects since the 1980s, with the aim of creating freefloating highprecision positioning stage. View the kit manual this is the kit used by coilcraft designers to provide fast turnaround of planar transformer samples. Our large scale display systems are designed by video wall experts with decades of experience in video wall display technology. However, at high frequencies, skin and proximity effect losses in the planar windings become significant, and parasitics cannot be ignored. My diy planar magnetic headphones and drivers headphone. Andover unveils its first planarmagnetic headphones. Like an electrostatic driver, the diaphragm of a planar magnetic speaker is a thin sheet of flexible transparent film, but unlike an electrostat, the film has very thin. This is done with the use of magnetic fields that move the diaphragm depending on the drivers design. This came about from what i discovered about the two when i was deciding whether to get one versus the other. Planars complete portfolio of highquality lcd video walls encompass a wide range of different sizes, resolutions and technologies. Software tool for fast and optimized stator winding design.
Featuring the narrowest bezels, most flexible mounting systems and slimmest installation depths, planar s lcd video walls are bestinclass and specifically designed to deliver precise and brilliant visual messages in the worlds most demanding environments. Typical design applications include high frequency switching regulator transformers and output chokes for offline, fullwave and forward converters, 60 hz singlephase line transformers, ac. Consequently, a software platform for magnetics design is established. Detailed transformer drawing will be generated with a click. Magnetic builder magnetic design software, inductor and transformer design tool poweresim is a free webbased software providing power supply smps design, transformer design, magnetic design, loss analysis, thermal analysis, waveform analysis, mtbf analysis, bom building, dvt analysis and optimization of power supply smps click to try poweresim.
In the middle sits the planar magnetic headphone, which is a stepup design that doesnt mean you have to be willing to sacrifice anything just for the sake of your headphones. Historically, determining temperature dependent winding and core losses has only been possible using iterative testing of physical models due to the difficulty in determining 3d frequency and thermal. Jun 20, 2019 in the middle sits the planar magnetic headphone, which is a stepup design that doesnt mean you have to be willing to sacrifice anything just for the sake of your headphones. Theres so much information, in fact, that achieving a comprehensive understanding of what the technology is, and why you should care, can be a. Transformer design software integrated engineering software. Planar magnetic technology you may have heard of it. Recently planar magnetic technologies have been widely used in power electronics, due to good cooling and ease of fabrication. The design of a multilayer planar transformer for a dcdc. After concluding the new design, the user can print the graphical circular and planar or numerical schemes of the coils fig. Exoticlooking planar speakers, analog gear, accessories. With nearly 30 years of experience in development of awardwinning displays, each planar desktop monitor features the fastest graphics and most vibrant colors all in a slim profile that is nothing less than beveledge beautiful. Designing with magnetics soft magnetic cores can be challenging given the.
Dec 30, 2015 oppo boasts that the planar magnetic drivers in its its pm1 audiophile headphones offer superior phase coherency since all parts of the diaphragm are vibrating in concert without break up and. There are 2 types of planar magnetic devices in this design. Topics include planar transformers, hall effect devices, flyback transformers, and. You can experiment with the number of turns, dcr and the location of the windings within the assembly interleaving. Strategies for optimizing planar design are presented, and illustrated with design examples. When you want a sleeker way of looking at things, planar flatpanel lcd desktop monitors will delight your eyes. You cant use simulation to design planar magnetic transformers. Are the best audiophile headphones planar magnetic headphones.
268 762 786 404 864 635 576 300 225 238 1048 251 585 1448 1569 1100 1326 170 1335 1392 309 1013 1379 77 643 251 50 1472 1090 1024 602 1073 88 191 240 648 349