Permalloy Stacked Core for Transformer

 

Permalloy Stacked Core Key characteristics and function

 

Construction:

Composed of multiple thin laminations (e.g., 0.2 or 0.35 mm thick) of high-permeability permalloy, which are stacked and often welded or mechanically interlocked to form a closed-loop core, such as an EE or stacked structure.

 

Primary Application:

High-speed, non-contact current sensing, often in devices like clamp ammeters, current transformers, and other power meters.

 

Mechanism:

The stacked core concentrates the magnetic field generated by the current-carrying conductor and guides it to a magnetic field sensor, like a Hall sensor, located within the core's gap. This allows for a highly sensitive and accurate measurement.

 

Performance:

High permeability and low hysteresis of the permalloy material allow for high linearity and accurate measurements across a range of temperatures.

 

Protection:

By creating a low-reluctance path for the magnetic field, the core effectively shields the sensor from external magnetic fields, improving the accuracy of the measurement.

 

 

Transformers, transmitters, chokes, telephones, relays for input, output, audio signals, inductors, crossover networks, DC bias bridging, chopper, control converter, differential, filament, IF, measuring instruments, electronics, computer modems, communications, special transformers, chokes, precision motors/electric motors, stator and rotor stacks for generators, laminated stacks for actuators, sensors or transformers