Product introduction

Permalloy laminated and interlocked cores are magnetic core assemblies manufactured by stamping Permalloy strips into laminations and then stacking and interlocking them. Featuring high magnetic permeability, low coercivity, and low core loss, they are critical components for precision transformers, instrument transformers, and various electromagnetic devices. Our Permalloy laminated and interlocked cores are available in two material series: 80% Nickel (typical grades 1J79/1J85) and 48~50% Nickel (typical grades 1J50), offered in EI, toroidal, C-core, and other shapes. Our products are widely used in audio equipment, telecommunications, power protection, instrumentation, and other fields.

KEY FEATURES:

• High initial permeability, effectively improving device sensitivity and signal transmission efficiency while reducing coil turns;

• Low coercivity and low hysteresis loss, significantly reducing core loss and improving overall device efficiency;

• Near-zero magnetostriction for high-nickel (80% Ni) material, ensuring excellent dimensional stability during magnetization, suitable for high-precision signal applications;

• Compact laminated and interlocked structure with high mechanical strength, effectively reducing eddy current losses and improving stacking factor;

• Cores are annealed to eliminate stamping and assembly stresses, ensuring stable and reliable magnetic performance;

• Wide range of specifications, with custom shapes, sizes, and materials available upon request.

TYPICAL APPLICATIONS:

• Audio transformer and input/output transformer cores, for high-fidelity audio equipment, microphone preamplifiers, and communication devices;

• Precision instrument transformers and meter transformer cores, for power measurement, instrumentation, and energy metering applications;

• Pulse transformer and driver transformer cores, for switching power supplies, drive circuits, and industrial control equipment;

• Magnetic shielding and magnetic circuit structural components, for magnetic shielding and flux guidance structures in precision electronic equipment and EMC designs;

• Ground fault interrupter and zero-sequence current transformer cores, for power protection and safety control systems.

Product type

Interlocked Cores

Product specification model

Customizable according to requirements