Components
Assemblies
Plants & Systems
Components
Assemblies
Plants & Systems

Chokes

A choke is a passive component frequently used in electrical engineering and electronics which, due to its inductance, slows down the increase in current and thus has a smoothing and energy-storing effect. The term coil is also frequently used for this type of component. The physical operating principle is based on their self-induction, i.e. chokes represent an inductive resistance for alternating currents.

Documents

Air chokes

Air chokes generally do not have a soft magnetic core. The magnetization characteristic is therefore linear and magnetic saturation does not occur. However, this open magnetic circuit results in a large stray field. We can develop and wind air chokes for you in a wide variety of shapes and with a wide variety of properties. Just contact us.

Technical specifications

Rated power: 100 mVA .. 10 kVA
Inductivity: 1 µH .. 5 H
Current: 10 mA .. 1 kA
Frequency: 50 Hz .. 1 MHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Geometry: Single and multilayer, 2D and 3D geometry, cylindrical and toroidal shape.
  • Winding material: wire, flat wire, enamelled wire, stranded wire, foil, tube in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, flat construction
  • options: water cooling, special insulation properties
  • Arbitrary choice of mounting points possible

Fields of application

The applications of our air chokes range from renewable energies to mechanical and plant engineering to safety engineering. They are always used when standard solutions (e.g. due to quality, design, insulation strength) are not good enough for your application.

Contact

Peter Nass

Entwicklung

+49 6081-583-409
Send eMail nass@pikatron.de

Power chokes

Our power chokes are widely used, for example, as storage chokes, line chokes or even as sinusoidal filter chokes. They are used to smooth currents and damp harmonics. Depending on the application, different core materials are used. Our high-cant winding technology can also be used effectively for these chokes, where very high energy densities can be realized.

Technical specifications

Rated power: 100 mVA ... 500 kVA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 150 kHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, bar cores, cut tape cores, toroidal tape cores.
  • Core material: magnetic powder, ferrite, nickel, iron, silicon and mixed material for non-linear characteristics
  • Winding material: wire, flat wire, stranded wire, HF stranded wire, foil, tape, tube in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, screw terminals, clamps
  • Construction: open, impregnated, potted, water cooled, in housing
  • options: Fuse, temperature fuse, temperature monitor, protection class up to IP66
  • Arbitrary choice of mounting points possible

Fields of application

The applications of our power chokes range from switchgear in industry, railroad technology, medical technology to aviation. They are always used when standard solutions (e.g. due to approvals, vibration resistance, long-term stability) are not good enough for your application.

Contact

B.Sc.

Tim Harder

Entwicklung

+49 6081-583-426
Send eMail harder@pikatron.de

Mains chokes

If current peaks have to be smoothed, which can be caused by the current consumption of an inverter, for example, a line choke is connected between the supply network and the receiving device. Since high current peaks often put a strain on machines, a line choke significantly extends the life of the machine. By lowering the resulting rms current, energy consumption is also reduced, which saves costs. In addition, it ensures that all electromagnetic compatibility (EMC) requirements are met.

Technical specifications

Rated power: 100 mVA ... 10kVA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 150 kHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, bar cores, cut tape cores, toroidal tape cores.
  • Core material: magnetic powder, ferrite, nickel, iron, silicon and mixed material for non-linear characteristics
  • Winding material: wire, flat wire, stranded wire, HF stranded wire, foil, tape, tube in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, screw terminals, clamps
  • Construction: open, impregnated, potted, water-cooled, air-cooled, in housing
  • options: Fuse, temperature fuse, temperature monitor, protection class up to IP66
  • Any choice of mounting points possible

Fields of application

The applications of our line chokes range from compensation systems in building power supply to frequency converters in mechanical and plant engineering. They are always used when standard solutions (e.g. due to efficiency, space requirements, connection design) are not good enough for your application.

Contact

Alexander Döring

Entwicklung

+49 36926-944-48
Send eMail doering@trafowerk-creuzburg.de

Toroidal chokes

Toroidal chokes are characterized by their special design. The wire is usually wound onto a toroidal core made of powder or ferrite material. This design results in a largely closed magnetic circuit, which means that toroidal chokes have only very low stray magnetic fields. This low stray field contributes to better electromagnetic compatibility (EMC).

Technical specifications

Rated power: 100 mVA ... 10 kVA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 1 MHz
Dielectric strength: up to 10 kV

 

Designs

  • Core shape: toroidal cores, toroidal tape cores
  • Core material: magnetic powder, ferrite, nickel, iron, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: wired (THT), free ends, screw connections, terminals
  • Construction: open, impregnated, potted, in housing
  • options: Fuse, temperature fuse, temperature monitor, protection class up to IP66
  • Any choice of mounting points possible

Fields of application

The applications of our toroidal chokes range from industrial power supplies to the EMC filter area. They are always used when standard solutions (e.g. due to EMC requirements, installation space, temperature) are not good enough for your application.

Contact

Dipl.-Ing. (FH)

Dimitri Severin

Entwicklung

+49 6081-583-425
Send eMail severin@pikatron.de

Storage chokes

In the conduction phase, a storage choke stores magnetic energy mainly in an air gap. In the blocking phase, the storage choke releases its energy to the circuit behind it. Our storage chokes can also ensure a linear induction curve at high magnetization.

Technical specifications

Rated power: 100 mVA ... 10 kVA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 150 kHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, cut strip cores, toroidal cores, ring cores.
  • Core material: magnetic powder, ferrite, nickel, iron, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire, foil, tape, tube in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, water-cooled, air-cooled, in housing
  • options: Fuse, temperature fuse, temperature monitor, protection class up to IP66
  • Arbitrary choice of mounting points possible

Fields of application

The applications of our storage chokes range from switching power supply converters in industrial technology to use in renewable energies. They are always used when standard solutions (e.g. due to efficiency, space requirements, insulation strength) are not good enough for your application.

Contact

Dipl.-Ing. (FH)

Dimitri Severin

Entwicklung

+49 6081-583-425
Send eMail severin@pikatron.de

Rod core chokes

Rod core chokes or rod chokes are primarily suppression elements which, depending on the frequency range and application, have a rod-shaped core made of iron powder, electrical sheet or ferrite material. This design creates an open magnetic circuit, which makes the inductance of the bar core choke independent of current over a wide range. Wound in a single layer, they can also be used as an antenna for high frequencies.

Technical specifications

Rated power: 100 mVA ... 10 kVA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 1 MHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: rod core
  • Core material: magnetic powder, ferrite, electrical sheet, mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: wired (THT), free ends, screw connections, terminals
  • Construction: open, impregnated, potted, in housing
  • Any choice of mounting points possible

Fields of application

The applications of our rod core chokes range from interference suppression on power supplies to use in medical technology. They are always used when standard solutions (e.g. winding scheme, capacitance, quality) are not good enough for your application.

Contact

Peter Nass

Entwicklung

+49 6081-583-409
Send eMail nass@pikatron.de

Current compensated chokes

The current-compensated choke or common-mode choke has at least two separate windings through which the operating current flows in opposite directions. The magnetic fields of common-mode interference cancel each other out. Current-compensated chokes can be used to limit current rise times, buffer energy, match impedance and act as EMC filters. Due to its differential principle, the current-compensated choke can be used for relatively high rated currents despite its small design.

Technical specifications

Rated power: 100 mVA ... 1.000 VA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 1 MHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, cut strip cores, toroidal cores, ring cores.
  • Core material: magnetic powder, ferrite, nickel, iron, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, in housing
  • Any choice of mounting points possible

Fields of application

The applications of our current-compensated chokes range from EMC filters on circuit boards in plant engineering to traffic engineering. They are always used when standard solutions (e.g. due to unbalanced load, frequency spectrum, temperature class) are not good enough for your application.

Contacts

Dipl.-Ing. (FH)

Dimitri Severin

Entwicklung

+49 6081-583-425
Send eMail severin@pikatron.de

DC link chokes

DC link chokes are used, among other things, as smoothing chokes at the output of a rectifier within a power supply. They are used to smooth the DC link voltage by limiting the current rise times. They reduce the harmonics in the mains current and at the same time limit the peak values. This relieves the load on the supply network and reduces the peak load current of the DC link capacitors.

Technical specifications

Rated power: 100 mVA ... 500 kW
Inductivity: 1µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 800 Hz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, cut strip cores, toroidal cores, ring cores.
  • Core material: magnetic powder, ferrite, iron sheet, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, water-cooled, air-cooled, in housing
  • Due to the frequencies ideally suited for the design as high cantilever winding
  • Arbitrary choice of mounting points possible

Fields of application

The applications of our DC link chokes range from smoothing chokes for power supplies, converters and similar devices in mechanical and plant engineering to medical technology. They are used whenever standard solutions (e.g. power quality, energy efficiency, heating) are not good enough for your application.

Contact

Peter Nass

Entwicklung

+49 6081-583-409
Send eMail nass@pikatron.de

PFC chokes

PFC chokes (Power Factor Correction) are special storage chokes. They are particularly low-capacitance and are ideally suited as a low-cost choke for energy storage in a PFC circuit. They are characterized by good EMC behavior. The chokes are usually based on metal powder cores, but we can also offer you other options and base our core selection on your individual requirements. Switching frequencies up to several hundred kilohertz are no problem here.

Technical specifications

Rated power: 100 mVA ... 10 kVA
Inductivity: 1 µH ... 5 H
Rated current: 10 mA ... 1 kA
Frequency: 16 2/3 Hz ... 500 kHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, cut strip cores, toroidal cores, ring cores.
  • Core material: magnetic powder, ferrite, iron sheet, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, in housing
  • Any choice of mounting points possible

Fields of application

The applications of our storage chokes range from boost converters (PFC circuits) in automation technology to use in industrial electronics. They are always used when standard solutions (e.g. due to efficiency, space requirements, insulation strength) are not good enough for your application.

Contact

Dipl.-Ing.

Karsten Eisenhuth

Entwicklung

+49 36926-944-49
Send eMail eisenhuth@trafowerk-creuzburg.de

Filter chokes

Filter chokes are primarily used to smooth or suppress voltages. Particularly in the audio sector, this reduces "hum". In other areas, the smoothing achieves better EMC behavior.

Technical specifications

Rated power: 100 mVA ... 100 VA
Inductivity: 1µH ... 5 H
Rated current: 10 mA ... 10 A
Frequency: 16 2/3 Hz ... 250 kHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM, E, EK, EC, ETD, EI, UI, M sections.
  • Core material: magnetic powder, ferrite, nickel, iron, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, in housing
  • Any choice of mounting points possible

Fields of application

The applications of our screen chokes range from switching power supply converters in industrial technology to use in renewable energies. They are always used when standard solutions (e.g. distortion factor, shielding, resonance) are not good enough for your application.

Contact

B.Eng.

Charles Tchuanga

Entwicklung

+49 6081-583-408
Send eMail tchuanga@pikatron.de

Resonance chokes

Our resonance chokes are characterized by their high quality and thus low losses. At the same time, they are designed to efficiently dissipate the heat loss so that high power can be achieved in a small installation space.

Technical specifications

Rated power: 100 mVA ... 50 kVA
Inductance: 1µH ... 5 H
Rated current: 10 mA ... 100 A
Frequency: 16 2/3 Hz ... 500 kHz
Dielectric strength: up to 10 kV

 

Examples

Designs

  • Core shape: RM-, E-, EK-, EC-, ETD-, EI-, UI-, M-cuts, cut strip cores, toroidal cores, ring cores.
  • Core material: magnetic powder, ferrite, iron sheet, silicon and mixed material
  • Winding material: wire, flat wire, stranded wire, HF stranded wire in copper or aluminum
  • Connections: leaded (THT), surface mount (SMD), free ends, terminals
  • Construction: open, impregnated, potted, in housing
  • Any choice of mounting points possible

Fields of application

The applications of our resonant chokes range from series resonant circuits in radio technology to use in highly efficient power supplies in traffic engineering. They are always used when standard solutions (e.g. temperature management, Q-factor, insulation strength) are not good enough for your application.

Contact

Dipl.-Phys.

Florian Adler

Entwicklung

+49 6081-583-417
Send eMail adler@pikatron.de

Other chokes

In addition to the chokes shown, the Pikatron Group also offers all other choke types. In some cases, it is only the terms that differ, but in others these are genuine special cases, for which we can of course also help you. In all probability we can also help you with discontinued chokes of other manufacturers, if your application does not allow a basic renewal. But we are also at your disposal for updating your entire application. Just contact us.

 

Contact

Dr.-Ing.

Felix Henschke

Technische Leitung

+49 6081-583-400
Send eMail henschke@pikatron.de

Documents