
The higher the frequency of electrical operation, the more pronounced the radiation effects on the human body. In general, each household appliance has a fixed operating frequency specified by the national standard (as indicated in the product specification), and can be divided into the ultra-low frequency, intermediate frequency and microwave frequency bands. At the same work intensity, the higher the operating frequency of home appliances, the more significant the radiation effect on the human body.
1, ultra-low frequency appliances (rated at 50 Hz)
Corresponding products: electric shavers, vacuum cleaners, washing machines, electric irons, coffee machines, humidifiers, hair dryers, air conditioners, rice cookers, induction cookers, stirrers, electric blankets, fluorescent lamps, refrigerators, etc.
Under normal circumstances, these appliances will not pose a great threat to the human body, but if you do not pay attention to the frequency of control use, time and use of each use, it will still lead to a series of health problems. Among them, electric shavers, hair dryers and other household appliances that are in close contact with the human body and are frequently used, the shorter the time each time they are used, the better, and should be kept as far away from the body as possible when the power is turned on and off; the experiment shows that it is kept with the vacuum cleaner. More than a centimeter, humidifier is more than 1 meter distance, the minimum amount of radiation; and the electric blanket for a long time, it will cause physical fatigue, weakness, limb pain and other symptoms, it is best to use the power in the timely manner after warm-up .
2. IF appliances (3 MHz or less, 1 MHz = 1 million Hz)
Corresponding products: TVs, computers: The frequency of TVs varies from a few hundred to a few kilohertz, while computers are relatively high, especially desktop computers.
In everyday use, as long as they are kept at a distance of at least half a meter from these appliances, their radiation intensity is within a certain standard range, so there will not be much problem. Desktop computers have large rear and side radiation, and it is best not to open the chassis; laptop radiation is concentrated on the top of the keyboard; flat-panel TVs (including LCD and plasma TVs) are much smaller than traditional CRT TVs, but there are still certain Hidden danger, it is recommended to watch at least one meter away.
3, microwave frequency band (30 to 30000 MHz)
Corresponding products: mobile phones, microwave ovens The microwave ovens operate at frequencies between 915 and 2450 MHz, while mobile phones operate at frequencies from 1800 to 2000 MHz.
When using the mobile phone, it should be as short as possible. When the phone is connected, it should be answered again. It is recommended to use the headset more. The microwave radiation of the microwave oven will disturb the central nervous system and cause headaches, dizziness, memory loss, insomnia, etc. When used, the human body must Half a meter away, do not look directly at your eyes.
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