# Bridge Rectifier Calculator

Our bridge rectifier calculator is the perfect tool to obtain every parameter used in a bridge rectifier, such as **current**, **DC voltage output**, **RMS current**, and **ripple factor**.

We've paired this full wave bridge rectifier calculator with a brief description of key concepts regarding this topic, such as:

- What a
**bridge rectifier**is; - How to calculate the
**output voltage**of a bridge rectifier; - The
**ripple factor formula**and definition; - More!

## Full wave bridge rectifier definition

A full wave bridge rectifier is a type of electrical circuit that converts alternating current (AC) into direct current (DC). It consists of four diodes arranged in a closed-loop configuration, with each side of this arrangement connected to a different side of the AC supply. As the current passes through the circuit, it experiences minimal ripple effects and produces a relatively stable output voltage.

🙋 If you don't know anything about AC circuits, our RC circuit calculator is the perfect place to start!

## How does a bridge rectifier produce DC from AC?

During the positive half cycle, the diodes **D1** and **D3** are forward-biased, while **D2** and **D4** are reverse-biased.

The opposite happens during the negative half cycle: diodes **D1** and **D3** are reverse-biased, while **D2** and **D4** are forward-biased.

The result is a unidirectional load current.

We can then reduce the pulsating nature of this current by placing a capacitor in parallel with the resistor.

💡 See our capacitor energy calculator and resistor wattage calculator to understand how capacitors and resistors work.

## How to calculate the output voltage of a bridge rectifier

To calculate the output voltage of a bridge rectifier, you can either use this bridge rectifier calculator or use the following formula:

where:

- $V_{DC}$ is the average output voltage; and
- $V_{M}$ is the AC peak voltage.

## Ripple factor formula and other parameters

Likewise, you can obtain the **load current**, **ripple factor**, and **RMS current** using this bridge rectifier calculator or by hand using their formulas.

### Ripple factor:

where $I_{RMS}$ is the **RMS current** and $I_{DC}$ is the average load current.

### Load current:

where:

- $R_L$ is the load resistance;
- $R_F$ is the forward resistance of the diodes; and
- $V_{DC}$ is the output voltage.

### RMS current:

where $I_{M}$ is the peak load current.

Full-wave bridge rectifier diagram.