BR84

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Bridge rectifiers are a type of rectifier that have four diodes arranged in a bridge configuration. They are commonly used to convert alternating current (AC) into direct current (DC). They are classified as Thyrector bridges and TR bridges. The TR bridge is the most common type and it is used for applications such as DC motors, power supplies, and regulated power supplies. The Thyrector bridge is a high frequency bridge for applications such as high voltage rectification.

A BR84 bridge rectifier is a mid-power bridge rectifier with a maximum peak alternating current (PAC) of 84 amps and a maximum peak reverse current (PRC) of 1.2 amps. It has a typical power loss of 1.5 watts. The BR84 is used in applications requiring higher currents, such as battery chargers, switched mode power supplies, and power supplies with DC input voltage range of 80-300 volts.

The BR84 bridge rectifier has a block construction, with a top and bottom half. The top half consists of two silicon steel laminations, with four terminals protruding from the laminations. The bottom half consists of four diodes in a bridge configuration, with each diode connected between two of the terminals. The bridge rectifier works by allowing the electric current to flow in one direction while blocking the current from flowing in the other direction.

When an AC power supply is connected to the BR84 bridge rectifier, the diode bridge inverts the half cycles of the AC signal, so that positive and negative output DC voltages are created. The diodes act as a one-way valve, allowing the electric current to flow in one direction only. This produces a pulsating DC output voltage that can then be filtered to create a smooth DC voltage. This filtered DC voltage can be used to power various electrical devices, from small electronics to large electric motors.

The bridge rectifier can also be used in reverse, to convert DC voltage into AC voltage. For example, a DC motor can be used as a generator to produce an AC voltage. This AC voltage can then be converted into a DC voltage using a bridge rectifier. The bridge rectifier can also be used to protect sensitive electronic components from over-voltage damage. By using a bridge rectifier circuit, the voltage supplied to a component can be limited and regulated, so that the component is not damaged due to an over-voltage situation.

The BR84 bridge rectifier is used in many industrial and consumer applications, such as chargers and power supplies. It is a reliable and efficient bridge rectifier, with a wide input and output voltage range and a low power loss. It is a simple and economical solution to converting AC power into DC power, protecting sensitive electronics, and limiting and regulating voltage.

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