In the future, if a person calls loudly because he is not polite, it is very likely that he is charging his mobile phone. Because scientists are now developing technologies that use sound to charge mobile phone batteries, the louder the sound, the faster it will be charged.
A few days ago, Korean scientists invented a device that allows the phone to use voice for charging during a call. This technology converts sound into electricity. This means that those mobile phone users who like to “push the phone porridge†need not worry that the mobile phone will soon run out of power, but will also charge the mobile phone battery continuously. The louder the voice, the faster the charging. It is reported that this technology is not limited to the field of mobile phones, but also can be integrated into the field of portable players.
Sang-Woo Kim, a researcher at Sungkyunkwan University in South Korea, said that just as a speaker converts an electrical signal into a sound, the sound signal can also become a power source. This process is reversible. He added: "A lot of people are exploring how to get energy from their living environment. Our daily life and the surrounding environment are full of a lot of sound, but no one sees it as an energy source. In fact, speech, music, or Noise can be converted to electrical energy.†This device uses piezoelectric effect to generate electricity and converts a volume of around 100 decibels into 50 millivolts. However, the operating voltage of a typical mobile phone is 2 to 3 volts, and people's daily speaking volume is about 70 decibels. Therefore, the technology is currently unable to charge a normal mobile phone call.
A few days ago, Korean scientists invented a device that allows the phone to use voice for charging during a call. This technology converts sound into electricity. This means that those mobile phone users who like to “push the phone porridge†need not worry that the mobile phone will soon run out of power, but will also charge the mobile phone battery continuously. The louder the voice, the faster the charging. It is reported that this technology is not limited to the field of mobile phones, but also can be integrated into the field of portable players.
Sang-Woo Kim, a researcher at Sungkyunkwan University in South Korea, said that just as a speaker converts an electrical signal into a sound, the sound signal can also become a power source. This process is reversible. He added: "A lot of people are exploring how to get energy from their living environment. Our daily life and the surrounding environment are full of a lot of sound, but no one sees it as an energy source. In fact, speech, music, or Noise can be converted to electrical energy.†This device uses piezoelectric effect to generate electricity and converts a volume of around 100 decibels into 50 millivolts. However, the operating voltage of a typical mobile phone is 2 to 3 volts, and people's daily speaking volume is about 70 decibels. Therefore, the technology is currently unable to charge a normal mobile phone call.
Steel poles are commonly used to carry several types of electric power lines, distribution lines and lighting system. Distribution lines carry power from local substations to customers. They generally carry voltages from 4.6 to 33kV for distances up to 30 miles, and include transformers to step the voltage down from the primary voltage to the lower secondary voltage used by the customer. A service drop carries this lower voltage to the customer's premises.
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