3N256-E4/45

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Diodes - Bridge Rectifiers

A bridge rectifier is an electronic device which utilizes a four-diode circuit to convert alternating current (AC) to direct current (DC). The 3N256-E4/45 is an inherently motor contactor controlled bridge rectifier, composed of a core bridge rectifying circuit and a motor contactor circuit.

Application field

3N256-E4/45 bridge rectifiers are widely applied in industrial equipment and control. Typical applications include electroplating and anodizing, batteries and fuel cells, welding and soldering, hot rolling, measuring and testing. In metal processing, bridge rectifiers are used for polishing, cleaning and metal degreasing.

Working Principle

The core Bridge Rectifying Circuit of the 3N256-E4/45 bridge rectifier takes the form of a full wave bridge rectifier, utilizing four silicon diodes connected to four pole-pairs of a single phase transformer. AC input is applied across the transformer primary winding, output is connected to loads as required.

The motor contactor circuit is used in the 3N256-E4/45 bridge rectifier to provide motor control, and includes a motor contactor, thermistor (overload protection), and bimetal (overheat protection). The contactor regulates the AC output to the motor in order to ensure that the motor will not be overloaded. The thermistor guards against sudden load-in rushs and the bimetal ensures no overheat due to extended operation.

Conclusion

As demonstrated, the 3N256-E4/45 bridge rectifier can provide a consistent and reliable power supply for precision industrial applications. By incorporating a motor contactor circuit to regulate output, this bridge rectifier is able to provide an efficient and safe operation even under prolonged use.

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