A Calculadora de energia DC 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 e evitar sobrecarga.
Fórmula
Calcular DC power (P), use a seguinte fórmula:
DC Power Calculation:
P = V * I
Onde:
- 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.
| Voltagem (V) | Corrente (A) | Poder (W) |
|---|---|---|
| 5V | 1A | 5W |
| 12V | 2A | 24W |
| 24V | 5A | 120W |
| 48V | 10 | 480W |
| 120V | 15 | 1800W |
| 230V | 10 | 2300W |
Esta tabela fornece estimativas rápidas sem exigir cálculos manuais.
Example of DC Power Calculator
vamos calcular the power output of a 12V battery supplying 3A of current:
- Use a fórmula:
P = V * I - Substituindo os valores:
P = 12V * 3A - Resultado:
P = 36 W
Assim, um Fonte de alimentação 12V entregando 3A irá gerar watts 36 de poder.
Perguntas frequentes mais comuns
Calculating DC power ensures that electrical components operate within safe limits, preventing overheating, overloading, and energy waste. It also helps in vida útil da bateria estimation and power efficiency optimization.
Não, esta calculadora é específica para Circuitos DC. AC circuits involve factors like power factor (PF) e reatância, requiring a different formula.
In sistemas de energia solar, you can use this calculator to estimate power output from painéis solares ao multiplicar o valores de tensão e corrente gerado pelo painel.