Chokes & Baluns: Schematics

[last updated: 2021-09-04]
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• Voltage Baluns:
  • 1:1
    
    
    

    from: ref #? - anyFlip?
  • 4:1 Balun: (Voltage Balun, Auto-transformer type)
  
  
  from: ref #4

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• Guanella Baluns: are listed in places as "a type of Voltage Balun," however this does not seem to be the broad consensus, as there are a lot of schematics shown that are called "current baluns."
  • Given the info from DJ0IP, I'll only consider dual-core Guanella baluns:
  • 
    

    from: ref #?

    GuanellaCurrent_4-1_G3TXQ-a.png

    
    

    from: ref #?

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• Current Baluns:

  • Common-mode choke - also called a 1:1 Current Balun:
    
    
    

    from: wikiPedia (ref #3)
    
    

    1:1 Current Balun - from: ref #5
    
    

    1:1 Current Balun -
    from: http://anyflip.com/frel/udiq/basic
  • Transmission Line Choke or Coax Choke:
    This is fundamentally a 1:1 current balun, made from a coil of coax, with one coil in the schematic being the shield, and the other the center conductor.
    

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