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Manufacturers : Electronic components : Transformers : Toroidal transformers
Toroidal transformers are are built around magnetic cores of toroidal shape with multiple windings threaded through the center hole of the core and distributed evenly along the circumference of the toroidal core. In toroidal power transformers, a primary winding (or set of primary windings) is first wound on a toroidal shaped core, covering nearly the entire circumference of the core. One or more secondary windings are then wound on top of the primary windings. with a high-voltage insulating layer separating the primary and secondary windings for forming a safety insulation layer capable of withstanding high-voltage insulation testing and high operating potential differences between the primary and secondary windings. Toroidal transformers include insulation layer in the form of arcuate (semi-toroidal) tubes which surround a portion of the core (and bobbin if used) of the transformer. This high-voltage insulating layer separates the primary and secondary windings for forming a safety insulation layer capable of withstanding high-voltage insulation testing and high operating potential differences between the primary and secondary windings.The core insulation is usually made by curing an insulating layer of plastic or ceramic material on the outer surface of the core, by fitting plastic caps on the top and bottom of the core, or by winding a narrow strip of plastic material in overlapping fashion through the center hole in the toroid. Toroidal transformers are compact and inherently quieter than standard core configured transformers. Toroidal magnetic cores are frequently used in electronics because of their compact size, tight coupling and low flux leakage characteristics.

Listings on Electronic components : Transformers : Toroidal transformers

  • Actown-Electrocoil
    Specializes in laminated, ferrite, and toroidal transformers, high frequency ferrite applications, and PCB surface mount transformers with tape and reel packaging as well as inductors, and customer specific coil products, for applications in the industrial, telecom, medical, and power supply industries. USA.
    http://www.actown.com
  • AG&E Transformers, LLC
    Offers a standard line of toroidal transformers ranging from 15VA through 1KVA, dual primary inputs 120/240V, 50/60Hz, and dual secondary outputs ranging from 2 x 12V through 2 x 120V. Also ffer many different toroidal designs, such as isolation toroidal transformers, step-up or step-down toroidal transformers, current sensing transformers, autotransformers, and value added custom work. USA.
    http://www.agetransformers.com
  • Airlink Transformers
    Manufacturer of toroidal transformers, lighting transformers, waterproof transformers, portable tool and site transformer, chassis mounting toroidal transformers, American 120volt transformer, industrial floor or wall mounting transformers, Japanese 100volt transformer, auto wound transformers step up/step down, and atripwound toroidal cores. UK.
    http://www.airlinktransformers.com
  • Amplimo BV.
    Supplier of standard range toroidal transformers, toroidal transformers from 20 - 3000VA with a 400V primary winding, audio transformers for 100V-line systems, toroidal transformers for medical applications, audio-signal transformers, audio-signal transformers, amplifier modules, output transformers, loudspeaker relay, valves and valve-sockets. The Netherlands.
    http://www.amplimo.nl
  • Assembly Masters, Inc.
    Specializes in the custom manufacturing of toroid inductors, toroidal transformers, free-standing coils or air-core coils, cable assemblies and wire harnesses. Other product capabilities include common mode chokes, pot cores, contract manufacturing and value-added rework services. USA.
    http://www.assemblymastersinc.com
  • Avel Lindberg
    Manufacturer of encapsulated toroidal transformers, polyester tape finish range toroidal transformers, DCDC converters and switching regulators (used to power communications and radio equipment, modems, data equipment, monitors, route information systems and instrumentation), mobile and marine radio, in-power DC-AC 35 and 100 watt inverters, and open PCB switching power supplies.
    http://www.avellindberg.com
  • Butler Winding
    Produces electronic transformers and custom magnetic products including toroidal transformers, flyback transformers, switch mode transformers, pulse transformers, current transformers, power transformers, bobbin wound transformers, common mode choke or common mode filter, toroidal inductors, surface mount inductors, bobbin wound inductors chokes, foil wound coils, sensor coils, and encapsulated coils. USA.
    http://www.butlerwinding.com
  • CSE Manufactory Co., Ltd.
    Specializes in the manufacture of laminated and toroidal transformers with a range of 6VA to 30kVA. Available with PCB, flyleads and terminal block connectors. Other products Include American and European transformers, 3 phase transformer, invertor transformer, amplifier transformer, on board transformer, adaptor transformer, and ferrite transformer. Thailand.
    http://www.cse-transformers.com
  • Custom Coils
    Manufacturer of high voltage transformers, switchmode/DC-DC converter transformers, linear power transformers, common mode transformers, isolation transformers, pulse transformers, current transformers, gate drive transformers, base drive transformers, toroidal transformers, variable inductors, dual (inductive balance) inductors, fixed axial inductors, filter inductors, air core inductors, width coil inductors, peaking inductors, centering inductors, switchmode coils, power supply chokes, high frequency coils, common mode coils, current coils, filter coils, differential mode coils, and high voltage printed circuit board assemblies.
    http://www.customcoils.com
  • Nuvotem Talema
    Designs and manufactures a wide variety of magnetic components including toroidal transformers, 56Kbps modem transformers, ISDN transformers and modules, ADSL transformers, VDSL modules, data line chokes, power inductors and chokes, common mode chokes, data line chokes, 50/60Hz current transformers, high frequency current sensors, high frequency transformers, current transformers, power inductors and chokes. Ireland.
    http://www.nuvotem.com
  • Plitron Manufacturing Inc.
    Manufactures standard power toroidal transformers, toroidal isolation transformers for medical equipment, printed circuit mount toroidal power transformers, toroidal output transformers for tube amplifiers, electrostatic loudspeaker transformers, toroidal power transformers for tube amplifiers, chokes for Tube applications, low noise power transformers for solid state amplifiers, audio amplifier modules, preamplifier module, loudspeaker relay, complementary power transformers, capacitor, and rectifier kit. Canada.
    http://www.plitron.com
  • SIGA (Electronics) Limited
    Manufacturer of all types of toroidal wound components, bobbin wound laminated transformer and associated assemblies, including standard toroidal transformers, custom wound toroidal transformers, Bobbin wound laminated transformers, medical isolating transformers, ferrite cored transformers, potted transformers, foil wound coils and special assemblies. UK.
    http://www.sigaelec.co.uk
  • Toroid Corporation of Maryland
    Manufacturer of toroidal isolation transformers, rectifier transformers, balanced transformers, auto-transformers, current sensing transformers, standard lamp transformers, industrial control transformers, DC filter chokes, 3-phase transformers, and inverter transformers for 50/60 Hz, used in medical electronics, test and measurement systems, industrial control panels, data communications, motor controls, light fixtures, audio systems, robotics, UPS, and avionics. USA.
    http://www.toroid.com
  • Tortech
    Manufacturer and distributor of toroidal power transformers, toroidal printed circuit transformers, toroidal transformers for halogen lighting, toroidal filter & storage chokes, current compensated noise, suppression chokes, fly back converters, stepdown transformers, isolation transformers, plug packs, current Transformers, Power, audio, low voltage lighting and isolation transformers, auto transformers and chokes, switchmode transformers and chokes (through hole and surface mount), linear and switchmode power supplies. Australia.
    http://www.tortech.com.au
  • V&F Transformer
    Manufacturer of toroid transformers, switch-mode transformers, power transformers, inductors/chokes, constant voltage transformers, control transformers, class 2 transformers, audio transformers, transformer assemblies, sub-assemblies and NEMA-rated enclosures. USA.
    http://www.vf-transformer.com
  • Voltamp Controls (India) Pvt. Ltd.
    Specializes in the manufacturing of continuously variable auto transformers, servo controlled voltage stabilizers, constant voltage transformers, rectifiers for electroplating / anodizing and hydrogenation, A.C. synchronous motors, current transformers, potential transformers, relay type voltage stabilizers and low current voltage stabilizers. India.
    http://www.voltamp.com
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