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.
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.