Role: The power supply can provide electronic devices need to use electrical energy, also known as the power supply, which provides all the components of the computer requires electrical energy. The size of the power supply power, current and voltage stability, will directly affect the performance and life of the computer.
Use of the field: power supply products are widely used in industrial automation control, military equipment, scientific research equipment, industrial control equipment, computers and computers, communications equipment, electric power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating and other fields.
Generators can convert mechanical energy into electrical energy, and dry batteries can convert chemical energy into electrical energy. Generator, the battery itself is not electrically charged, its poles were positive and negative charge, positive and negative charge generated by the voltage (current is the charge in the role of the voltage directed movement and the formation of), the charge conductor would have been, to generate current only need to add voltage can be, when the battery poles connected to the conductor in order to generate current to release the positive and negative charge out, when the charge is dissipated, it is also the end of the load flow (voltage) eliminated. Dry cell batteries are called power sources. A device that turns alternating current into direct current by means of a transformer and rectifier is called a rectified power supply. An electronic device that provides a signal is called a signal source. A crystal transistor amplifies the signal sent from the front and transmits the amplified signal to the circuit behind it. The crystal transistor can also be regarded as a signal source for the circuit behind it. Rectifier power supply, signal source is sometimes called power supply.