689-2D, 2N, 2P

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Bridge rectifiers, also known as a diode bridge, are a type of diode consisting of four diodes arranged in a bridge shape that allow alternately positive and negative voltages to be converted into direct current. They are widely used in a variety of applications ranging from rectifying alternating current for power supplies, to providing isolation for systems with electronically switched loads. In this article, we will discuss the difference between different types of bridge rectifiers, their common applications, and their working principles.

When it comes to bridge rectifiers, there are three common types: 689-2D, 2N, and 2P. 689-2D rectifiers are four-diode bridge configurations, which are characterized by their one central diode, two outside diodes, and two opposing diodes. This rectifier can safely handle high current and is commonly used in high-amperage commercial and industrial power supplies. The 2N bridge rectifier, also known as a three-diode bridge, is characterized by two diodes in the center and two outside diodes. It is capable of providing a more efficient rectification than the 689-2D, making it an ideal choice for low-amperage power supplies. Finally, the 2P rectifier is the simplest of the three, and consists of two diodes and two opposing diodes. This configuration is the least efficient of the three, but is suitable for lower-power applications such as AC-DC converters.

Bridge rectifiers are widely utilized for both rectification and isolation due to their low cost, high reliability, and robustness. They are commonly used in DC motor control circuits, where they are used to provide full-wave rectification of a DC motor\'s input power source. This allows for the motor to be powered by uninterrupted direct current for superior performance. They are also frequently used in switched-mode power supplies, where their ability to provide full-wave rectification from an AC power source enables an efficiency of 85-95% in the conversion of AC to DC power.

The basic working principle of a bridge rectifier is quite simple. When an alternating current is applied to its input, the current flows through each diode one at a time in the bridge rectifier. This allows the current to be converted into direct current at its output with the voltage polarity being reversed each time the current is switched. In the example of the 689-2D bridge rectifier, the current can be seen entering the top left diode and exiting at the bottom right. When the current is switched, it is then seen entering the bottom left diode and exiting at the top right. This alternating process is what enables the rectifier to convert alternating current into direct current.

No matter what type of bridge rectifier you are using, there are a number of important considerations to keep in mind for each of its applications. It is important to evaluate the breakdown voltage of the diode, as well as its temperature and power ratings to ensure that it is capable of safely handling the specific current and voltage that it is being subjected to. Additionally, attention must be paid to the power factor being supplied, since the rectifier must be able to handle the power output required for its application.

In summary, bridge rectifiers are a vital component in many areas, including commercial and industrial power supplies, DC motor control circuits, switched-mode power supplies, and AC-DC converters. There are three different types of bridge rectifiers – 689-2D, 2N, and 2P – each of which offer different levels of efficiency for rectification or isolation depending on their specific application. Their basic working principles involve converting alternating current into direct current through an alternating process that loops from the outside diodes to the central diodes. It is key to evaluate the breakdown voltage, temperature and power ratings, as well as the power factor being supplied when using a bridge rectifier in order to ensure that it is able to safely handle the current and voltage that it will be subjected to.

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