A choke is a passive inductor in coil form which blocks high-frequency alternating current while allowing low-frequency AC and direct current signals to pass.
Chokes are used to filter electronically-induced high-frequency interference in a circuit or in the regulation of industrial electrical installations.
Chokes consist of insulated copper wire wound around a core, which can be a ferrite torus, laminated metal or an air core (devoid of material). Low-power chokes can be surface-mounted devices (SMD) or have through-hole leads. Axial or radial ferrite bead cores have holes through which a wire is threaded several times.
Common-mode chokes prevent current from being grounded. They have two coils on a single core, constituting a transformer. High-power chokes are single- or three-phase. They limit current flowing through capacitors used for reactive energy compensation in electrical machinery.
Choice will depend on the choke's inductance value, its series resistance, its maximum permanent current capacity and its thermal qualities (for high-power applications).
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Choke coil 50 - 60 Hz | DS30270, DS30080 FranceCol
Industrial quality inductance, for any power electronics use, in correlation with product characteristics. This product is available...
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Choke coil max. 50A, 110/220 V | TRF series Shaanxi Shinhom Enterprise Co.,Ltd
Inductance Range: 0.5 to 40mH Tolerance: ±30% at 10kHz 0.1v HP4284A Rated...
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Ferrite choke coil Muuntosähkö Oy - Trafox
Design: we design the components based on customer´s specifications Materials: we...
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Most of the inductive components produced at our Company are based on our own produced ferrite cores.This gives us the capability to be flexible and competitive. Inductive components are produced by precise winding machines and other controlled devices...
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Single-phase choke coil SILVERATECH
Our main production activity is job-order manufacturing and qualified fulfilment of our customers’ demands and satisfaction is our main priority. We manufacture Transformers and Chokes, including single and three phase with either toroidal cores, EI, UI or...
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Three-phase choke coil FWI-CKI3 V&T Technologies Co., Ltd.
FWI-CKI3 Three phase 380v Input/output AC reactor (choke) Description Functions of AC reactor (choke): 1.Reduction of harmonics , Improvement of the power factor 2.Over-voltage...
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Noise suppression choke coil 250 V | CHI 121 A/C/D REO INDUCTIVE COMPONENTS AG / REO ELEKTRONIK AG
Suppression of thyristor-controlled equipment and machines, electrical machine controls and electronic switching devices, suppression...
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Features * High reliability, compact and lightweight * Easily inserted into the PCB Applications *...
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Choke coil max. 10 A, max. 150 H | 153 - 159 series Hammond
Key Features: * Economical "open bracket" - channel mount. * Tolerance of 15% on...
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Choke coil max. 5 W, 100 - 300 Hz | GD series Getra
Smoothing Chokes to VDE 0570/IEC61558 Energy content 180...
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Inductors and Coils Captor utilizes various types of inductors in the manufacturing of EMI...
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Choke coil Nicera European Works Ltd.
Nippon Ceramic is supplying transformer, coil and HV power unit satisfying customer's individual...
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Choke coil 440 V, 0.5 - 6.3 A, max. 390 mH | DS series Eichhoff Kondensatoren
Rod chokes are made with a iron core of electrical...
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Single-phase choke coil max. 60 000 VA Gebrüder Frei
SINGLE-PHASE According to VDE 0570 / EN 61558 Part 2 – 20 • Frequency 50/60 Hz • Insulation class T 40 / B • Degree...
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Single-phase choke coil 0.19 - 25.5 Ws, 16 A | DEG series Trafomodern Transformatorengesellschaft
Designed and tested according to: • IEC/EN 61558-2-20 • VDE...
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Three-phase choke coil 2 - 400 A, 400 - 690 V Igel
Advantages at a glance - Current ratings from 2-400A -...
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Power choke coil 2.2 μH - 15 mH | SDS KOA
InductorsPower Choke Coils[SDS] The terminal surface material lead free...
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Cooling coil for pressure transducer max. 200 ºC | esi ADT25 SUCO VSE
The ADT25 Cooling Coil Adaptor is primarily designed for use with steam and hot gasses. It...
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Power inductor 27 µH - 10 mH | RFS1317 Series Coilcraft
Low cost, high efficiency shielded inductors, great for a variety of...
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Shielded SMD power inductor for electronics 1 000 µH, 0.14 A | 29L105C Murata Power Solutions
The 2900L series is a lower profi le version of our 2900 series range of bobbin-wound, shielded inductors. They are suitable for power-line...
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Air-core power inductor max. 1 350 kV Alstom Grid
DC systems often require a smoothening of the direct current wave shape to reduce losses and improve system performance. Series reactors inserted in DC systems offer this response and additionally operate as current limiting devices in the event...
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Ignition coil Delphi Power Train
Delphi Multi-Charge Ignition is an ignition control feature that fires a specially designed coil multiple times to extend spark duration and increase spark energy. It is designed to support the industry's newest advanced lean burn and stratified...
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Chip inductor for electronics Murata Electronics
Murata has various chip inductors for every applications such as power circuits and...
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Current compensated choke 0.2 - 3 mH SCHAFFNER EMC
Cost-effective PCB designs for up to 80 A with forced cooling * Compact size...
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Encapsulated coil / electromagnet SIRAI
ENCAPSULATED COILS These coils have a natural application in the field of solenoid valves for the most varied sectors. The range is composed of numerous types, with different dimensions, powers, materials and electrical connections. The standard versions and the availability of developing new ones, allow optimum solutions...
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Custom induction coil Fluxtrol, Inc.
Application: Case Harden S-Cam and Shaft Original Concentrator: None Problem / Failure Mode: Extended Cycle Times / Loss of Pattern Control Power...
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Inductor for electronics 62000, 63000, 64000, 65000 Series Pico Electronics
Ultra-miniature HIGH "Q" Inductors Specifications: * Inductance Tolerance ± 4% at 0.1V-100KHZ * Inductance Stability vs. Temperature...
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Line reactor ELR™ ELECTRONICON Kondensatoren GmbH
ELR™ line reactors ‘cos good reactors are as important: ELRTM Line Reactors Any device is only as reliable as the sum of its components. With more than fifteen years of experience in manufacturing tuned and detuned filter reactors for power factor correction,...
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Motor choke 50 - 200 Hz | COMBILINE KEB
KEB COMBILINE Mains Input and Motor Chokes The B6 rectifier input circuit in the input of variable speed drives causes current ripples that strain the DC-bus capacitors in the...
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Single phase power inductor EREMU
Inductances Single-phase Three-phase Air cored Applications Harmonic reject filter, net filter for commuted chargers, current peak limitation filter, harmonic absorption...
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Steam coils Based on its vast experience in steam equipment and systems, Thermofin has developed its own steam coil design...
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Cooling coil for pressure transducer max. 200 ºC | ADT25 ESI Technology Ltd
ADHT HIGH TEMPERATURE COOLING COIL ADAPTOR FOR USE WITH STEAM OR HOT GASSES REDUCES THE TEMPERATURE OF MEDIA BEFORE CONTACT WITH TRANSDUCER AVAILABLE WITH 1/4 AND 1/2"BSP MALE CONNECTION FOR USE WITH MEDIA UP TO 200°C SAFE TO...
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High performance ignition coil 06.50.104 MOTORTECH GmbH
P/N 06.50.104 New MOTORTECH Style Non CSA Certified Ignition Coils Standard Versions New MOTORTECH Style Ignition coils are becoming more and more important in modern,...
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Current compensated choke 10000 - 100000 µH | B82732F Epcos
Rated voltage 250 V AC Rated current 0.45 ... 1.6 A Rated inductance 10 ... 100 mH Construction ■ Current-compensated frame core double choke ■ Closed magnetic circuit with frame construction made...
