Filter & Chokes
The definition of electromagnetic compatibility according to the European EMC Directive states that a device, equipment or system should be able to function satisfactorily in the electromagnetic environment without causing electromagnetic disturbances which would be unacceptable to other devices, equipment or systems in that environment. Appropriate technical measures must be taken to avoid these undesirable effects.
The manufacturer HIGH & LOW offers a wide range of filter components tailored to the various applications and solving the most common problems. The products shown on our website represent only a small selection from our extensive range. Please ask us if you have special technical requirements.
For higher powers, chokes can be used as filters, which we will be happy to design and procure for you. For this we need information such as current, voltage, frequency, area of application, size. Please call us to discuss further details.
Datasheets
PDF 4.2 Mb Filter & Choke Typen
EMC / EMI Filters
Medical Technology - Standard
- IEC Input Filters Medical
Types: Screw/Snap-In C14/C20
Series: General / High Performance / Excellent Performance / Ultra Performance - Power SupplyModule Medical
Double Fuse - without Switch - Single Phase Filters Medical
IEC Input Filters
Industry Standart / ITE
- Fast-on terminals, no ground choke, integrated resistor
- Types: Screw / Snap-In
Power Feed Modules
Industry Standard / ITE
- Single Suse - without Switch
- Single Fuse - with Switch
PCB Filters
- Printfilters on PCBs
- Standard Types: SIP / DIP
- High Performance Types: DIP
Single Phase EMI Line Filters
- Specification for Different Power Classes
- 1~20A | A type
- 10~30A | B type
- 6~30A | C type
- 10~30A | G type
- 1~30A | CNAC type
- 1~30A | DIN-Rail | CNAC type
3 Phase Power Line EMI Filters
- 3-Phase Filters without / with neutral conductor
- 1~20A | A type
- 10~30A | B type
- 6~30A | C type
- 10~30A | G type
- 1~30A | CNAC type
- 1~30A | DIN-Rail | CNAC type
Flat Wire Power Line Chokes
Types
- High Frequency Storage Chokes
- Customized Pq Core High Frequency Storage Chokes
- SMD Flat Wire High Current Line Chokes
- Flat Wire Pq Core High Current Line Chokes for DC-DC Converters
- PQ Type Flat Wire Line Choke (Flat Winding)
Advantages
- Flat wire winding, magnetically shielded (closed magnetic circuit)
- Low DC resistance (DCR)
- Lower AC resistance (losses caused by skin effects)
- Excellent heat dissipation
- For high power inductors and applications with high inductance density
- High saturation current
- Low ripple noise
- Best EMI effects
Common Mode Chokes
Current Compensated Chokes
Types
- SMD Toroidal Ferrite Core
- 3-phase, horizontal, ferrite core
Properties
- Connection types: vertical, horizontal, SMD, bare moun
- High permeability MnZn ferrite or nanocrystalline core material
- 0.3A - 50A
- Applications up to 760 VAC
- Clearance and creepage distances ≥ 7 mm
- Attenuation up to 60 dB
- Attenuation frequency range: 1 kHz to 20 MHz depending on core material used
- Operating temperature: -40 °C to +125 °C
Flat wire technology in power electronics
For design reasons, power electronics modules and communication elements are often very close to each other in modern electrical devices. In automotive electronics, we know only too well EMC problems that arise as a result of this spatial proximity of data lines and power assemblies. Consequently, difficulties with electromagnetic compatibility are best solved at the source, i.e. at the transformers.
Clean signals through flat-wire technology
Switching power supplies use ever higher frequencies to realise efficient voltage supplies with modern GAN FETs (gallium nitride field-effect transistors; see also Elektronik Praxis under the keyword "gan fet"). The probability of interference signals increases. Malfunctions in digital data streams are the result. A well-functioning solution is the use of flat wire technology.
The flat wire can
- disperse the electric field evenly,
- minimise the parasitic capacitance and thus achieve
- the best EMI effect at the source.
Problems with electromagnetic compatibility are thus minimised.
Winding goods with flat wire:
Advantages over enamelled round wire windings
- The flat wire can disperse the electric field evenly, minimise the parasitic capacitance and thus achieve the best EMC effect already at the source. The problem of electromagnetic compatibility is thus minimised.
- The flat wire avoids the proximity effect so that its crosssection can be used 100%. (=no increase in ohmic resistance for alternating current).
- Flat cables are ideal for high power applications. In high power coil designs, round enamelled wires have no advantage.
- Flat wire saves space and is also advantageous for automated production. The flat wire has excellent heat dissipation and is suitable for applications with high power and high inductance density.
- The flat wire winding achieves a very low DCR, a closed magnetic circuit and extremely low total noise.
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Reduction of proximity effect due to flat wire technology -
Distribution of the electric field: round wire vs flat wire
