- 直流功率计算器 helps determine the power output or consumption in a direct current (DC) electrical system. It is widely used in electrical engineering, automotive systems, solar panels, and battery-powered devices. By inputting voltage and current values, users can quickly calculate power in watts, ensuring efficiency and proper power management in circuits.
This tool is essential for engineers, technicians, and DIY enthusiasts working with DC electrical systems, helping them optimize power usage 并防止超载。
公式
计算 DC power (P)，使用以下公式：
DC Power Calculation:
P = V * 我
地点：
- P = power in watts (W)
- V = voltage in volts (V)
- I = current in amperes (A)
This formula applies to pure DC circuits, where power is simply the product of voltage and current.
DC Power Conversion Table
Below is a quick reference table with common voltage and current values along with their corresponding power output.
| 电压（V） | 电流（A） | 功率（W） |
|---|---|---|
| 5V | 1A | 5W |
| 12V | 2A | 24W |
| 24V | 5A | 120W |
| 48V | 10A | 480W |
| 120V | 15A | 1800W |
| 230V | 10A | 2300W |
该表提供 快速估计 无需手动计算。
Example of DC Power Calculator
我们来计算一下 the power output of a 12V battery supplying 3A of current:
- 使用公式:
P = V * 我 - 替换值:
P = 12V * 3A - 结果:
功率=36W
所以，一 12V电源 交付 3A 会产生 36瓦 力量。
最常见的常见问题解答
Calculating DC power ensures that electrical components operate within safe limits, preventing overheating, overloading, and energy waste. It also helps in 电池续航时间 estimation and power efficiency optimization.
不，这个计算器专门用于 直流电路. AC circuits involve factors like power factor (PF) 和 电抗, requiring a different formula.
In 太阳能系统, you can use this calculator to estimate power output from 太阳能板 通过乘以 电压和电流值 由面板生成。