Air Core Coils

An electric current through a wire wound into a coil creates a magnetic field through the center of the coil due to ampere s circuital law coils are widely used in electronic components such as electromagnets inductors transformers electric motors and generators a coil without a magnetic core is called an air core coil.

Air core coils.

5 5 nh 27 3 nh. We ll use the term air core coil to describe an inductor that does not depend upon a ferromagnetic material to achieve its specified inductance this covers the cases where there really is just air inside as well as windings upon a different insulator such as bakelite glass or ptfe etc. What is an air core coil. How to make an air core inductor to wind a regular air cored coil you need a former a source of wire some fine sandpaper or a modeling knife not shown and a bit of superglue or double sided tape to hold the wire in place.

Premium audio grade coils crossover inductors air core laminated steel core superq foilq xq ixq erse is the worlds leading manufacturer of premium audio grade air core and steel core coils for audio crossovers and speaker building. Stroobandt callsign on4aa here. With over 20 years of experience in providing customers with the industry s best coils inductors and transformers our team at agile magnetics is well equipped to help you select the best air core inductors for your job. 2 08 1 4 1 5 view series 1111sq.

Square air core inductors. An air core inductor is an inductor that does not depend upon a ferromagnetic material to achieve its specified inductance. Erse s xq line of air core coils are revered as one of the most musically accurate coils on the market today. Formula equations for inductance of air core inductor calculator inductance of an air core coil inductor l n2 x d2 18d 40l μh where n number of turns d inductor coil diameter l inductor coil length.

Each xq coil starts with heavy insulated ofc copper wire featuring erse s exclusive purity guarantee. Product series inductance length mm width mm height mm 0806sq 0807sq 0908sq. Advantages of an air core coil. The heavy insulation offers a high dielectric constant between the windings and layers while the purity guarantee insures musical.

Some inductors are wound without a bobbin and just air as the core. Some others are wound on a bobbin made of bakelite plastic ceramic etc.