Gapped Tape‑Wound Current Sensor Core

Product Overview

Different from split-type reactor cores with detachable two-piece structures, our gapped tape-wound current sensor core adopts an integral non-splittable design, professionally optimized for high-precision current sampling rather than power energy storage. Manufactured from premium low-loss CRGO grain-oriented silicon steel via high-precision automatic tape winding and high-vacuum stress-relief annealing, thisair-gapped tape-wound hall sensor core eliminates internal processing stress and stabilizes magnetic performance fundamentally.

As a versatile CRGO gapped tape-wound transducer core, it supports two mainstream shapes: standard toroidal structure for uniform flux distribution and rectangular structure for square module housing assembly. The precise wire-cut or wheel-cut air gap effectively suppresses magnetic saturation and zero drift defects that plague ordinary closed cores. Eachcut-gapped tape-wound magnetic core is strictly calibrated to guarantee consistent inductance and sampling accuracy in mass production, making it the preferred core component for global high-precision sensing manufacturers.

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Core Performance & Procurement Advantages

Tailored for precision sensing scenarios, thisgapped tape-wound current sensor core has exclusive performance advantages different from power reactor cores, fully meeting the strict quality standards of global automotive and industrial customers:

Ultra-Low Remanence & Zero Drift Suppression: Professional vacuum annealing process minimizes residual magnetism, avoiding signal zero drift and ensuring ultra-low measurement error for Hall and current sensors.
Customizable Magnetic Parameters: Adjustable air gap size accurately balances magnetic permeability and anti-saturation capability, adapting to different sampling current ranges and design requirements.
Dual-Shape Adaptability: Toroidal version provides uniform magnetic flux for universal sensing scenarios; rectangular version optimizes space utilization for square automotive and modular equipment housings.
High Batch Consistency: Strict dimensional and magnetic performance screening ensures extremely low parameter deviation of air-gapped tape-wound hall sensor core in batch assembly, reducing product calibration costs.
Stable Long-Term Operation: Low iron loss material and stress-free process prevent performance attenuation, suitable for long-term continuous monitoring of automotive and industrial equipment.

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One-stop transformer core solutions for bulk procurement: quality you can trust, costs you can save, and delivery you can count on.

Full Product Range：Comprehensive selection of transformer cores to cover all your industrial and power application needs.

Custom Design Flexibility: Quickly adapt core dimensions, materials, and performance to your exact project specifications.

Cost-Effective Bulk Supply: Factory-direct pricing for large orders, delivering superior value without compromising on quality.

Guaranteed On-Time Delivery: Adequate production capacity and efficient logistics ensure your bulk orders arrive when you need them.

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Application Fields

This high-precision CRGO gapped tape-wound transducer core is widely applied in scenarios requiring accurate current signal detection, covering industrial and automotive core markets:

Industrial open-loop & closed-loop Hall current sensors
Automotive on-board sensors, EV BMS, OBC and DC-DC current detection modules
Smart grid power monitoring and precision metering equipment
Magnetic sensing components such as magnetic diodes and magnetic transistors
High-precision test and measurement instrument sensing units

Manufacturing Process

Standardized precision manufacturing ensures the high precision and stability of each cut-gapped tape-wound magnetic core:

High-precision CRGO steel slitting → Constant-tension automatic tape winding → High-vacuum stress-relief annealing → Precision air gap cutting (wire cutting/grinder cutting) → Edge deburring & finishing → Insulation protective treatment → Dimensional full inspection → Magnetic performance testing → Anti-collision packaging

FAQ

Q1: What is the biggest difference between this gapped sensor core and split reactor cores?

A1: Our single-piece gapped tape-wound core is an integral non-detachable structure designed for precision signal sampling, featuring low residual magnetism and high measurement accuracy. Split C/U cores are two-piece separable structures focused on power reactor assembly efficiency, with higher residual magnetism and unsuitable for high-precision sensor detection.

Q2: How to choose between toroidal and rectangular shape for the gapped tape-wound current sensor core?

A2: Toroidal air-gapped tape-wound hall sensor core is preferred for general scenarios requiring uniform magnetic flux and low leakage. Rectangular shape is more suitable for automotive and modular equipment with square housing limitations, offering better space matching and assembly convenience.

Q3: Can air gap size and tolerance be customized for the CRGO gapped tape-wound transducer core?

A3: Yes. We support full customization of 0.2–15mm air gap size and ultra-tight tolerance according to customer inductance parameters, sampling accuracy standards and working conditions, to match exclusive sensor design schemes.

Q4: Can you provide complete quality certification and test reports?

A4: We provide original CRGO material certificates, dimensional inspection reports, BH curve test data and core loss reports. Automotive-grade orders support complete quality traceability and IATF16949 compliant documents.

Q5: Why is vacuum annealing essential for cut-gapped tape-wound magnetic core?

A5: Vacuum annealing completely eliminates winding mechanical stress, effectively reducing residual magnetism and sensor zero drift. It is the core process to ensure long-term precision stability of all our gapped sensor cores.

Custom Solution & Quotation

We provide customized gapped tape-wound current sensor core solutions with dual shape options. Please inform us of your required shape, air gap size, dimensional parameters and application scenarios, and our professional engineering team will provide optimized design solution and formal quotation within 24 hours.