What is Magnetic Field?

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

What is magnetic field generator?

It is a current source generating sufficient level of current to create magnetic field. The generator output is a current signal with AC. The frequency depends on the type of magnetic field generator. For power frequency magnetic field tests, magnetic field generator’s output is 50Hz or 60Hz current signal.

How to create a magnetic field?

Magnetic field generator, or current source, itself is not enough to create magnetic field. Thus, output of magnetic field generator is connected to coil via appropriate current cables. When current flows via coil, magnetic field is created automatically. The field strength of magnetic field is measured as A/m.

Why magnetic field generators are used?

Magnetic Field Immunity Testing is one of the EMC tests. Magnetic Field Generators are used for magnetic field immunity tests according to IEC/EN 61000-4-8 and IEC 61000-4-9 standards. IEC/EN 61000-4-8 is for power frequency magnetic field immunity testing, IEC/EN 61000-4-9 is for RF pulsed magnetic field immunity testing.

How to arrange level of magnetic field?

The shape and size of the generated magnetic field are defined by the loop antenna in use; different loop antennas can be separately ordered as an option.

All the tests required by the basic standard IEC/EN 61000-4-8 (full immersion, proximity, continuous, intermittent) can be easily controlled (test mode, level, timing) either by the built-in software, via the soft keys on the front panel of the equipment, or by integrating control with the laboratory’s own commercial or proprietary software.

The loop antenna is supported by a wheeled double mast with a pair of specially designed swivels so the loop can be turned quickly and easily in the direction most convenient to the test engineer.

Do you need a high current generator for testing power frequency magnetic field immunity according to the IEC/EN 61000-4-8 standard? Visit this page:

Magnetic Field Immunity Test Systems