Basic explanation
General explanation
Input power refers to the power absorbed by the device.
Calculation method
For electrical equipment, the input power is equal to the product of the input voltage and the input current.
The input power of different devices
The input power of the speaker
The input power of audio and video usually refers to the withstand power (electric power) of the unit in the speaker, which is generally rated Power, maximum withstand power (program) and peak power (peak). Among them, the rated power is the most accurate input power data. The other two names just indicate the instantaneous load capacity of the speaker, which is of little practical significance.
The input power of the hydraulic pump
The input power of the hydraulic pump refers to the driving power of the hydraulic pump, which is the mechanical power (W). Calculated by the following formula: PBi=PBQBηB/PB< /sub>i is the input power of the hydraulic pump; PB is the rated working pressure (Pa); QB is the rated flow (m/s); η B is the total efficiency.
The input power of the motor
The input power of the motor is defined as: the voltage across the motor multiplied by the current flowing through the motor. Refers to the power actually consumed by the motor.