SDB105-TP Discrete Semiconductor Products

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Diodes - Bridge Rectifiers

Bridge rectifiers are widely used in electronics to obtain DC outputs from an AC supplier. These devices are made from four or more individual diodes connected in either a "half-bridge" or full-bridge configuration. A single phase bridge rectifier is made from four diodes connected in the shape of a bridge, as shown below.

The SDB105-TP is a full-bridge rectifier with a peak inverse voltage of 100V and a maximum output current of 10A. This device can be used to convert a wide range of AC voltages into a single DC output, making it useful in a variety of applications.

Working Principle

The principle of operation of a bridge rectifier is simple. When an alternating current (AC) supply is connected to the rectifier, it will produce a direct current (DC) output. This is done by each of the individual diodes that make up the bridge structure conducting in a sequence, depending on the polarity of the AC supply.When the supply polarity is positive, diodes A and C are forward biased, so they conduct current in the same direction. Diodes B and D are reverse biased and therefore do not conduct. This means that current flows from the positive supply, through diodes A and C, and then returns to the negative supply. Therefore, the output voltage is in the same direction as the positive supply.When the supply polarity becomes negative, diodes B and C are forward biased and diodes A and D are reverse biased. This creates a path for current to flow from the negative supply, through diodes B and D and then return to the positive supply. Therefore, the output voltage is in the same direction as the negative supply.This process of current flowing in one direction for positive AC supply polarity, and then in the opposite direction for negative AC supply polarity, creates a DC output from the bridge rectifier.

Application Field

Bridge rectifiers are used in a range of applications. These devices are used in power supplies to convert AC to DC power, they can be used as voltage converters, they are also used to bridge the gaps in circuits to pass AC signals, and they can be used in motor controllers to convert AC current into DC current, allowing the motor to turn on and off.The SDB105-TP can be used in all of the above applications, as well as a range of other applications. This device can be used in medical imaging systems, professional audio equipment, security systems, HVAC systems, vending machines, lighting systems, automotive electronics, and a range of other applications where a DC voltage is required from an AC supply.

Conclusion

Bridge rectifiers are widely used in many different applications and can be used to convert AC supplies into DC power. The SDB105-TP is a full-bridge rectifier with a peak inverse voltage of 100V and a maximum output current of 10A. It is suitable for a wide range of applications such as medical imaging systems, professional audio equipment, security systems, HVAC systems, vending machines, lighting systems and automotive electronics.

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