[Elecraft] More Balanced Current Measurements - Voltage Balun

[Don Wilhelm]

Phil,

Phil,

A current balun *is* a choke, not a transformer.  That is true for both 
the 1:1 and 4:1 baluns.  OTOH, a voltage balun is a transformer, but I 
am not sure why anyone would want to use one except for special 
applications.

73,
Don W3FPR

Phil & Debbie Salas wrote:

> The figure referred to is using the material as part of an RFI 
> suppression choke where you want attenuation at RF frequencies.  I think 
> you'll find that when the Type 61 material is used as a transformer, it 
> will have very low loss if designed properly.  See Sevick's book on 
> baluns and ununs.  But I think that even a well-designed transformer 
> will have maybe 1-2% loss.  At 100 watts, that is 1-2 watts which will 
> cause the transformer to heat up. Just dissipate 1-watt in a resistor 
> with your DC power supply and feel the heat.