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power supply

power supply

date: 2019-08-29
view count: 20

A power source is a device that converts other forms of energy into electricity.



Electricity comes from the principle of 'magnetic generation of electricity', which comes from renewable energy sources such as water power, wind power, sea tide, water pressure difference of dam, solar energy, and coal burning and oil residue.The common power supply is the dry battery (dc) and the household 110v-220v ac power supply.



High quality power supply generally has FCC, UL and Great Wall of China and other multinational certification marks.These certifications are the professional standards for power supply formulated by the certification body according to the technical specifications of the industry, including production process, electromagnetic interference, safety protection, etc. All products that meet certain indicators can only use the certification mark on the packaging and product surface after the application for certification, which has certain authority.



A generator converts mechanical energy into electrical energy, while a dry battery converts chemical energy into electrical energy.Generators, battery itself is not charged, it have positive and negative charges respectively, the poles of the voltage generated by the positive and negative charges (current is the charge voltage under the action of directional movement in formation), charge in the conductor had, you just need to add voltage to produce electric current, when the battery the poles when connected to a conductor to generate an electric current, the positive and negative charges go, when the charge all over, also the Dutch do flow (pressure) disappear.Dry batteries are called power supplies.A device that converts alternating to direct current by means of transformers and rectifiers is called a rectifying source.The electronic equipment that provides the signal is called the signal source.The transistor amplifies the signal sent in front and transmits it to the circuit behind.The transistor can also be regarded as the signal source for the back circuit.Rectifying power sources and signal sources are sometimes called power sources.

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