Cracking the problem of weak signal in smoke alarms, Gujing wins trust with professionalism and innovation
A well-known domestic alarm manufacturer encountered a technical bottleneck in the development of its new smoke alarm due to weak signal performance. After analysis, the root cause of the problem lies in the insufficient filtering performance of the 1mH chip inductor used in the circuit, which leads to a decrease in signal quality. Although the customer has tried various inductance solutions, the problem has not been resolved.
Professional docking: from accidental discovery to technological breakthrough
The customer actively contacted us for technical support through the filtering solution case released by Gujing Inductor on the Tiktok platform. The Gujing team responded quickly and, after a thorough understanding of the project background, discovered that the customer had tested multiple types of patch and plug-in inductors, but none of them were able to effectively filter out complex electromagnetic interference.
Based on 23 years of experience in inductor research and development, the Gujing technical team first recommends the EE10 series 1mH plug-in common mode inductor for testing. The sample validation showed significant improvement in signal issues, confirming the determination of common mode interference. However, due to the demand for product miniaturization and production automation, customers are more inclined towards surface mount packaging solutions.
Innovative Customization: Technological Leap from Plug ins to SMT
Faced with the actual needs of customers, Gujing has decided to develop customized patch solutions based on its technical accumulation of tens of thousands of magnetic material formulas. The technical team reorganized the project parameters and screened multiple magnetic materials in the laboratory for comparative testing based on specific operating frequencies and interference characteristics.
After system verification, the 7 * 7 * 4 GCDM74 patch common mode inductor with a special formula magnetic material was ultimately selected. After the sample was delivered, the customer tested and confirmed that the filtering effect fully met the standard, and the signal quality significantly improved, preliminarily solving the long-standing technical problem.
Collaborative Challenge: Ensuring Consistency in Mass Production
During the small-scale trial production phase, it was found that some products had inconsistent parameters. Gu Jing immediately formed a joint research team with the client, and through in-depth data analysis, identified the micro consistency between winding technology and magnetic core coupling as the key factor.
Both parties jointly optimize the design plan and ultimately determine the mass production parameter standards:
Resistance: 6.31-6.54 Ω
Test conditions: 40kHz/0.3V
Inductance value: 1-2 pins, 3-4 pins, 954.8-981.2 μ H
Special requirement (increased sensitivity test under short-circuit conditions): Sensitivity value below 60uH
This scheme ensures that each inductor maintains a high degree of consistency within a strict parameter range, fully meeting the reliability requirements for mass production.
Value Extension: Deep Collaboration Beyond Component Supply
As a professional inductor manufacturer with 23 years of experience, Gujing has always been committed to becoming a strategic partner for customers in the field of electromagnetic compatibility. We not only provide high-quality inductor products, but also focus on a deep understanding of customer application scenarios, utilizing rich material databases and mature simulation design capabilities to provide a full process solution from problem diagnosis to mass production assurance.
This cooperation once again confirms Gu Jing's service philosophy of "technology driven innovation". In the increasingly complex electromagnetic environment, Gujing will continue to rely on its profound technological accumulation and customized innovation capabilities to help more Chinese intelligent manufacturing products break through technological bottlenecks and jointly safeguard the safety and reliability of electronic products.
