Напряжение Делитель Калькулятор | Electrical Мощность Калькулятор

Рассчитать output напряжение or resistor values

V
Ω
Ω
Результат

Формула

VoutVout = Vin × R2 ÷ (R1+R2)

Circuit Diagram

    Vin ──┬── R1 ──┬── GND
          │        │
          │       Vout
          │        │
          └── R2 ──┘
                    

Understanding Напряжение Dividers

A напряжение divider is a simple circuit that reduces напряжение using two resistors in series. The output напряжение is a fraction of the input напряжение determined by the resistor ratio.

Applications

Напряжение dividers are used for level shifting (e.g., 5V to 3.3V for microcontrollers), creating reference voltages, reading sensors, and in audio volume controls (potentiometers).

Ограничения

Напряжение dividers are not efficient for power delivery - they waste energy as heat. For significant current loads, use a напряжение regulator instead.

Часто задаваемые вопросы

For low power applications, use 1kΩ-100kΩ. Lower values draw more current; higher values may cause noise issues. The ratio matters more than absolute values.

Generally Нет. Напряжение dividers have poor load regulation - the output напряжение drops significantly when current is drawn. Use a напряжение regulator for powering devices.