KBU4K-E4/51

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Diodes are two-terminal electronic components that positively only allow current to flow in one direction. Bridge rectifiers are a type of diode circuit configuration usually constructed of four or more diodes which connect an AC voltage source to a DC voltage load and rectify alternate cycles of input voltage into a continuous and unidirectional output voltage. The KBU4K-E4/51 bridge rectifier module is suitable for AC inputs up to 500 VAC and an output current up to 51A, with a rated forward voltage £VF£ of 1.1 V for each diode, and a rated reverse voltage £VR£ of 300 V.

Application Field

KBU4K-E4/51 is a full wave four diode bridge rectifier module suitable for many complementary power systems and high voltage applications. These applications include system power supplies, motor drive systems, motor systems, emergency lighting, telecommunications, control systems, UPS systems, electric vehicle charging and other related power systems.

Working Principle

A bridge rectifier provides fullwave rectification and it basically consists of four diodes connected in a bridge circuit as shown in the diagram. During negative half cycle, the anode of D2 is negative with respect to its cathode, so it will conduct the current. Similarly, during the positive half cycle of the input voltage the anode of D1 gets positive with respect to its cathode, so it will conduct current. In this way, the alternating input is rectified and a DC output is obtained.

Furthermore, the four diodes provide full wave rectification which is more efficient than the half wave rectifiers. This is because it rectifies both halves of the input signal and doesn’t leave any part of the signal uncorrected. In addition, the bridge rectifier are well insulated, easy to mount and can support high power rating and capacitive loads without generating any additional EMF noise.

Conclusion

In conclusion, the KBU4K-E4/51 bridge rectifier module is an effective and easy to use component used in many high voltage applications. With its full wave rectification, the bridge rectifier module can provide efficient and reliable power conversion and is suitable for AC inputs up to 500 VAC and an output current up to 51A. Furthermore, it is insulated for safety, can support capacitive loads, and has a high power rating.

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