Induction chokes are otherwise called coils. They are passive elements, whose task is to filter current. This is necessary, among other things, when powering a microprocessor located in the board. A choke consists of a wire that is spirally wound onto a core. However, there are coils without a core and the wire is filled with air. The most important parameter to pay attention to is inductance. This determines how to counteract changes in the current flowing through the winding. Inductance is determined by the wire cross-section and its length. Other parameters that determine the effectiveness and purpose of the choke are maximum current and resistance. Chokes are available in Botland store in different variants. You can opt for chokes made by the method of the chronic, that is THT, as well as the surface, feel the SMD. In addition, in the case of THT chokes, there are also options for vertical and axial chokes, while for SMD we have wire chokes available. Induction chokes throttle current or act as a radio wave receiver in the LC system.
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Index: ADA-23551
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Coils
Products: 8
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inductor FerroCore 100uH / 5A wire - DTPU100A5
Inductance: 100uH. Max current: 5A. Diameter: 30mm, height: 13mm. Tolerance: ± 20%. Resistance: 0.059Ω
Index: PAS-13742
Index: PAS-13742
Choke 10uH/1200mA - vertical mounting - 5pcs.
Inductance: 10 μH. Maximum current: 1200 mA. Dimensions: 6 x 8 mm. Price for 5 pieces.
Index: PAS-04358
Index: PAS-04358
Choke 330uH/180mA - vertical mounting - 5pcs.
Inductance: 330 μH. Maximum current: 180 mA. Dimensions: 6 x 8 mm. Price for 5 pieces.
Index: PAS-04360
Index: PAS-04360
Choke 470uH/300mA - vertical mounting - 5szt.
Inductance: 470 μH. Maximum current: 300 mA. Dimensions: 6 x 8 mm. Price for 5 pieces.
Index: PAS-04361
Index: PAS-04361
Inductance: 100 μH. Maximum current: 90 mA. Resistance: 7.0 Ω. Dimensions: 3 x 7 mm. Price for 10 pieces.
Index: PAS-00432
Index: PAS-00432
Inductance: 1 mH. Maximum current: 40 mA. Resistance: 33 Ω. Dimensions: 3 x 7 mm. Price for 10 pieces.
Index: PAS-07966
Index: PAS-07966
Inductance: 10 μH. Maximum current: 160 mA. Resistance: 2.5 Ω. Dimensions: 3 x 7 mm. Price for 10 pieces.
Index: PAS-00438
Index: PAS-00438
Set of axial chokes 3x7mm - 140pcs.
The set of 140 pieces of 3 x 7 mm axial chokes is a comprehensive set of electronic components ideal for hobbyists, educators and professionals. These chokes are essential in...
Index: AKS-23052
Index: AKS-23052
How do chokes work?
Induction chokes are devices that work against interference by acting as a filter. The coil is placed in the circuit in the same way as a resistor - in series. Combined with the appropriate capacitor system, chokes can be an excellent filter that removes variable noise from the current while leaving the constant voltage signal intact. The operation of capacitors and chokes is very similar from an electronics perspective - in both cases, after the power supply is cut off, the current will remain for a while. The difference is that after a sudden disconnection of current, the capacitor will release some of its "reserves" (principle similar to a buffer or retention tank), while the coil will generate current (current flow) for a short while, similarly to a flywheel after stopping the drive.
Coil or choke?
In electronics jargon, the terms coil and choke can be used interchangeably, but it is worth knowing what this means and how the nomenclature should be used correctly. The coil is an inductive component - but when it is part of the filtering system, it becomes a choke.
The coil is an element that should be familiar to virtually everyone who has taken physics classes in school. Everyone has certainly seen (at least in a book) a wire choke (wire coil), i.e. a core of ferromagnetic material (or even air) wrapped in wire. Individual coils differ in their inductance expressed in henries (H), but it is also worth paying attention to their resistance.
Due to their high degree of resistance, capacitors are installed in parallel in the circuit, while coils are installed in series. They constitute a relatively small obstacle for DC voltage, but for AC voltage they become "harder" to overcome - this is a desirable phenomenon. Moreover, in the passive components category you can also include not only coils, but also fuses , capacitors , magnets and many others.
Induction choke - Wide selection. What we offer?
Our product range includes a wide selection of different types of coils - these include axial chokes (legs on two opposite ends of a component similar to THT resistors) and vertical chokes (two legs coming from one end of the component). Wire chokes and SMD wire chokes are also available. All of these components can act as anti-interference chokes. The inductance values of individual models range from 4.7 μH to 1 mH , the minimum resistance is 0.059 Ω, and the permissible current is from 0.4 mA to 5A. Individual coils differ in inductance, maximum current and voltage filtering ability. Only coils from proven suppliers or directly from the manufacturer are available for sale.
Chokes - FAQ
The easiest way to check the operation of the choke is to connect it to an inductance meter and compare the result with the values declared by the manufacturer.
Glands (cable glands, cable glands ) are not electronic elements - they are assembly components that seal the bushings in device housings and protect cables against damage and twisting.
The type of recommended choke depends on the rectifying system used in the welding machine. In the case of single-phase rectifiers, chokes with higher inductance are used, and in three-phase rectifiers - with lower inductance.
Cable glands are selected depending on the cable cross-section (shape and diameter). Appropriate tables to help you select a choke can be found on the manufacturers' websites.