balun
Sign in to saveAlso known as telephone balance unit
thumb|right|Pair of AC&E 120 Ω twisted pair (Krone IDC) to 75Ω [[coaxial cable balun transformers. Actual length is about .]]
~14 min read
Encyclopedic overview
16 sectionsContents
- Types of balun
- Classical transformer type
- Autotransformer type
- Transmission-line transformer type<span class="anchor" id="choke_balun"></span>
- Planar and Marchand Baluns
- Self-resonance
- Balun alternatives
- Applications
- Radio and television
- Video
- Audio
- Other applications
- See also
- References
- Citations
- General references
thumb|right|Pair of AC&E 120 Ω twisted pair (Krone IDC) to 75Ω [[coaxial cable balun transformers. Actual length is about .]]
A balun (from "balanced to unbalanced", originally, but now derived from "balancing unit") is an electrical device that allows balanced and unbalanced lines to be interfaced without disturbing the impedance arrangement of either line. A balun can take many forms and may include devices that also transform impedances but need not do so. Sometimes, in the case of transformer baluns, they use magnetic coupling but need not do so. Common-mode chokes are also used as baluns and work by eliminating, rather than rejecting, common mode signals.
Excerpted from Wikipedia’s “balun” article, available under the CC BY-SA 4.0 licence.