Which electronic devices are more sensitive to electromagnetic interference?

The following electronic devices are relatively sensitive to electromagnetic interference:
1. Communication devices - Mobile phones: Mobile phones rely on precise radio frequency signals for communication. Weak electromagnetic interference may affect the quality of signal reception and transmission. For example, when close to a strong electromagnetic interference source, mobile phones may experience weakened signals, interrupted calls, and slowed data transmission speeds. Especially for devices like 5G mobile phones that adopt high-frequency and high-speed communication technologies, they are more sensitive to electromagnetic interference because their signals are more fragile and easily affected by external interference. - Wireless routers: Wireless routers transmit and receive wireless signals and provide network connections for multiple devices. Electromagnetic interference can lead to a decrease in wireless signal strength, a reduction in coverage area, and unstable network connections. If there are strong electromagnetic interference sources nearby, such as high-power power adapters and industrial equipment, the signal of the wireless router may be severely interfered with. When users use the wireless network, they may experience slowed network speeds and frequent disconnections.
2. Audio devices - Sound systems: Sound systems are very sensitive to electromagnetic interference, especially high-fidelity audio equipment. Electromagnetic interference may introduce noise, humming, or static, destroying the purity and sound quality of audio. For example, when there are devices that generate electromagnetic interference, such as power adapters and fluorescent lights, near the sound system, obvious noise may be heard, affecting the experience of music appreciation. - Microphones: Microphones are used to receive sound signals. Electromagnetic interference may cause microphones to produce noise, distortion, or signal interruptions. In professional audio recording and performance occasions, the anti-interference requirements for microphones are higher. For example, in stage performances, if the microphone is subjected to electromagnetic interference, there may be noise or unstable signals, affecting the performance effect.
3. Medical devices - Cardiac pacemakers and implantable defibrillators: These medical devices are crucial for the life safety of patients. They rely on precise electronic circuits to monitor and regulate the heart's function. Strong electromagnetic interference may interfere with the normal operation of the device, leading to incorrect triggering of the pacemaker or incorrect discharge of the defibrillator, causing serious harm to the patient. For example, near strong magnetic field environments such as hospital MRI rooms, electromagnetic interference must be strictly controlled to ensure the safety of implantable medical devices. - Electronic blood pressure monitors and blood glucose meters: Although these home medical devices have relatively low power, they are also easily affected by electromagnetic interference. Electromagnetic interference may cause inaccurate measurement results, affecting the patient's judgment of their own health status. For example, if there are working power adapters or other electronic devices nearby when using an electronic blood pressure monitor or blood glucose meter, the measurement results may deviate.
4. Precision measuring instruments - Oscilloscopes: Oscilloscopes are used to measure and display the waveforms of electrical signals and are very sensitive to electromagnetic interference. Electromagnetic interference may cause noise, distortion, or interference stripes on the oscilloscope display, affecting the accuracy and reliability of measurements. In environments with high measurement precision requirements such as electronic laboratories, effective electromagnetic shielding measures must be taken to ensure the normal operation of measuring instruments such as oscilloscopes. - Spectrum analyzers: Spectrum analyzers are used to analyze the spectral characteristics of electrical signals and are also sensitive to electromagnetic interference. Strong electromagnetic interference may cause errors in the measurement results of spectrum analyzers, affecting the accurate analysis of signal frequencies, amplitudes, and other parameters. For example, in the field of wireless communication, spectrum analyzers are used to monitor and analyze radio signals. Any electromagnetic interference may affect the accurate evaluation of signals.