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Balun

A balun (contraction of the words "balanced" and "unbalanced") is an electrical device that connects a balanced circuit to an unbalanced circuit. Usually, baluns are implemented using transformers, but they can also be constructed from transmission lines. They are commonly used in radio frequency (RF) applications, where they can be designed to help match antennas to transmission lines. They are also used in telecommunications, where they are sometimes referred to as signal couplers.

BRN6044-0014S Application Fields and Working Principle

BRN6044-0014S is a high-performance photoelectric isolation transformer. It is specially designed to solve the high-frequency common-mode noise interference problem and has the characteristics of high isolation requirement and high reliability.

BRN6044-0014S provides excellent performance of common-mode suppression such as common-mode noise through power line or controller line in a wide frequency range from 160MHz to 250MHz. This product is a system balun, suitable for supplying power supply to narrow frequency band, and using in various application fields, such as switching power supply PFC circuits, DC-DC and other occasions with high common-mode noise.

The working principle of the BRN6044-0014S is that it uses two double-sided core transformers. Two primary windings are connected in series with the two secondary windings connected in series and the inner core and the outer core connected in series. The winding ratio and the number of turns of the four windings fully meets the requirements of the application field. When the input is a unbalanced voltage, the two windings of the input voltage together form a closed loop, forming a balanced input voltage, and then outputting a balanced voltage signal. The common mode rejection ratio of this balun is higher than with the use of single-core transformers, making it more effective in the suppression of common-mode interference.

The BRN6044-0014S high-performance Balun has a frequency range of 160MHz to 250MHz, a working voltage of 264V AC/DC, a working current of 2A, and a working temperature of -40℃ to +85℃. Moreover, it has good insulation characteristics and the ability to work non-stop for more than 20 days. The product has passed UL, CE, ROHS, FCC certifications and is widely used in 12V LED lights, illuminated signs, computer equipment, automotive, digital multimedia, audio-visual products, various products requiring optical isolation, noise filtering, interference, and circuit isolation, etc.

In general, BRN6044-0014S is a cost-effective and reliable balun product. It has the advantages of small size, light weight, high efficiency, low ripple noise, high common-mode suppression ratio and wide application range. It is a good choice of balun device for many applications.

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