Rated power refers to the power when the electrical appliance is working normally. Its value is the rated voltage of the electrical appliance multiplied by the rated current. If the actual power of the appliance is greater than the rated power, the appliance may be damaged; if the actual power is less than the rated power, the appliance cannot operate normally.
Under normal operating conditions, the output power of power equipment or the input power of energy-consuming equipment. It is often expressed in "kilowatts". It also refers to the power that the machine produced in the factory can reach during normal operation. That is to say, the power of a certain machine, the rated power of the machine is constant.
Rated power of vehicle power supplyFor vehicle power supplies, the rated power generally refers to the effective power that can be continuously output; that is, the maximum power that can continue to work in a normal working environment. Rated power is one of the most important parameters of vehicle power supplies. The greater the rated power, the more devices the power supply can load. The power of the car power supply generally comes from the battery in the car, so its rated power is not too large, generally between 100W and 800W, but for appliances that generally consume little power, such as mobile phones, laptops, PDAs, and digital Enough for the camera.
The rated power is the effective power that the car speakers can work continuously and stably, that is, the power that can withstand this value for a long time without damage. This is the power parameter of the car speakers with practical significance. Generally, when testing the rated power, a sine wave signal is input to the speaker within the rated frequency range. The signal duration is 1 hour, and the speaker does not produce thermal damage or mechanical damage. In theory, the rated power of the car speaker does not mean that such a high-power car amplifier must be required to push it. The driving difficulty of the car speaker is mainly determined by its sensitivity and impedance characteristics.
Computer rated powerThe rated power is the maximum power that the computer radiation eliminator can provide during continuous operation. The computer radiation eliminator is used to replace the computer power cord when it works, so its rated power must meet the needs of the computer, which is the most important parameter of the computer radiation eliminator. The rated power is closely related to the rated voltage and working current. In principle, it is equal to the rated voltage multiplied by the working current. Therefore, the rated power of the computer radiation eliminator is generally between 1000W and 2000W.
Power supply rated powerRated power refers to the long-term stable output power of the power supply when the ambient temperature is -5 degrees to 50 degrees and the voltage range is 180V~264V. Rated power is the most important criterion in power supply. Under normal circumstances, the power of the power supply generally refers to the rated output power of the power supply. On the nameplate of the power supply, the power marked should be the rated power.
Amplifier rated powerFor power amplifiers, the rated power generally refers to the rated power of the effective value (RMS) power that can be continuously output; it refers to the power that does not cause damage when the power is continuously operated for more than 8 hours without distortion. This power rating has practical use value.
Speaker rated powerFor speakers, the rated power generally refers to the ability of the speaker to withstand this value of power for a long time without damage. This does not mean that such a high-power amplifier is necessary to push it. The difficulty of driving the speaker is mainly due to its sensitivity and impedance characteristics. To decide.
According to international standards, there are two labeling methods for speaker power: rated power (RMS: root mean square sine wave) and instantaneous peak power (PMPO power). The former refers to the maximum electric power that drives an 8Ω speaker within the rated range and specifies the waveform continuous analog signal, after a certain interval and repeats a certain number of times, the speaker does not cause any damage; the latter refers to the maximum power that the speaker can withstand in a short time .
The rated power of the power supply only shows that the energy consumption ratio and working performance are best when the rated power value is not exceeded. Generally, the computer will only reach 60%~80% of the rated power when the computer does not use high-power graphics cards or non-standard configurations. , So generally 300W power supply is sufficient. If it is used as a graphic studio or professional design calculation, it is better to choose a higher rated power to avoid exceeding the rated power. Long-term full-load operation has a great impact on the service life of the power supply, and the heat dissipation of the computer power supply in the South is also a problem. Good power dissipation and life are worth considering.
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