News & Events

1. In the complex electromagnetic environment of hospitals, what external electromagnetic interference sources (such as other medical equipment, communication devices, etc.) can easily affect medical instrument EMS?
»»» The hospital electromagnetic environment is complex. Medical instrument EMS mainly faces the following external interference sources:
· Other medical equipment:
High-frequency electrosurgical units: Generate high-frequency (0.3~5MHz) strong electromagnetic radiation during operation, which may interfere with adjacent monitors, ultrasound devices
MRI/CT equipment: MRI's strong magnetic field (1.5T/3.0T) and RF pulses (64~3...

Spark plug ignition generates tens of thousands of volts of high voltage to break down air, forming a strong electromagnetic pulse (EMP)
Entertainment system (radio, Bluetooth modules, operating at 88-108MHz, 2.4GHz), navigation system (GPS 1.5GHz), air conditioning compressor (motor commutation interference, 100kHz-10MHz), car charger (switching power supply noise, 50kHz-1GHz)

Transient Voltage Suppression Diode, TVS Diode, Unidirectional TVS, Bidirectional TVS, TVS Working Principle, TVS Characteristics, TVS Applications, TVS Selection, TVS Parameters, Breakdown Voltage VBR, Reverse Standoff Voltage VRWM - Yinte Electronics

People often ask: What are the common issues in EMS immunity design for EMC? Here are the frequently asked questions:
1. In automotive electronics EMS design, how to choose a suitable microcontroller to reduce electromagnetic radiation? What are the differences in electromagnetic compatibility between different brands and models of microcontrollers?
»»» In automotive electronics EMS design, microcontroller (MCU) selection needs to focus on reducing high-speed switching noise and optimizing clock radiation. Core strategies include:
· Prioritize MCUs with low EMI characteristics: Need to pay attention to...

1. What are the immunity testing requirements for common mode inductors in IEC 61000-4-6 standard?​
2. What are the conducted emission suppression requirements for common mode inductors in information technology equipment per CISPR 22 standard?​
3. What is the classification basis for the insulation system of common mode inductors in UL 1446 standard?​

1. What challenges does common mode inductor design face in millimeter-wave devices?
2. What are the material options for bendable common mode inductors in flexible electronic devices?
3. What are the application prospects of superconducting common mode inductors in extreme environments?

China: Risk Classification System for Categories I, II, and III
According to the Medical Device Regulation (MDR 2017/745), the European Union classifies medical devices into Class I, Class IIa, Class IIb, and Class III, with risks gradually increasing

​1. What are possible reasons for severe heating of common mode inductors? How to troubleshoot?​
Answer: Possible reasons:

Excessive differential mode current: Common mode inductors have weak suppression capability for differential mode current. If differential mode current in the circuit exceeds design values, it increases copper loss (I²R) in windings, causing heating.
Core saturation: When common mode current or differential mode current is too high, magnetic flux density in the core exceeds saturation point, permeability drops sharply, and eddy current losses increase dramatically, causing core heating.
· Abnormal winding resistance: Winding wires are too thin, local short circuits or poor contact during winding.

What is the area with the most frequent lightning activity in the world? It is Lake Maracaibo in Venezuela Core data and phenomenon characteristics According to NASA's research, Lake Maracaibo experiences an average of 233 lightning strikes per square kilometer per year, far exceeding other regions. This data is 1.5 times that of the Congo Basin (recorded 158 square kilometers per year in Kifka village in 2004) and is also the "Lightning Capital" of Florida, United States; Orlando approximately 10 times per square kilometer per year