GBJ604

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Diodes - Bridge Rectifiers: GBJ604 Application Field and Working Principle

The GBJ604 bridge rectifier is a two-phase bridge circuit made up of four diodes. It is generally used to convert AC voltage from the mains to a DC voltage supply. It is especially suitable for low power DC applications.

Application Field of GBJ604

The GBJ604 bridge rectifier has many applications, including:

• Switched Mode Power Supplies (SMPS)
• Electronic Appliances
• Electronic Circuit Design

Other applications include battery charging systems, audio amplifiers and transformers, lighting systems, and other DC power supply applications.

GBJ604 Working Principle

The GBJ604 bridge rectifier works by allowing electrical current to flow through two output terminals in one direction only (unidirectional). This is achieved using four diodes which are arranged in a bridge circuit. When an AC voltage is applied to the input terminals of the bridge the diodes alternate conducting in a characteristic \'ripple\' pattern. This produces a DC voltage output which has a lower voltage than the input. It also contains some AC ripple due to the alternating current conducting in the bridge circuit.

This bridge rectifier works by allowing current to flow through the two output terminals, in one direction only, when an AC voltage is applied to the input terminals. The four diodes are connected in such a way that they alternate conducting. When a positive AC voltage is applied to the input, diode DP1 and DP2 conduct, resulting in the current to flow through the load in one direction. When a negative AC voltage is applied, then DP3 and DP4 conduct, again resulting in current to flow through the load in one direction only.

This alternating of conducting of the diodes results in a \'ripple\' pattern on the DC output, as the current is directed in one direction for a certain period of time and then in another direction for a period of time. This ripple pattern is what gives a bridge rectifier it\'s unidirectional behaviour.

Conclusion

The GBJ604 bridge rectifier is a two-phase bridge circuit made up of four diodes. It is used to convert AC voltage from the mains to a DC voltage supply, and is therefore useful in many applications. Its working principle is based on allowing current to flow through two output terminals in one direction only, by alternating the conducting of the four diodes in a bridge circuit.

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