[Amps] New HF amplifier

Larry Benko xxw0qe at comcast.net
Mon Aug 2 10:05:19 PDT 2010


What are you using as the basis for this blanket comment?  There is 
absolutely nothing wrong with tapped toroids.  What causes problems is 
treating them as is usually done for air core coils which have the 
unused turns shorted out.  On a toroid you do NOT short out any turns if 
some of the turns are active.  Otherwise you get significant loss and 
heating in the toroid.

Larry, W0QE

Dennis OConnor wrote:
> Tapped toroids show that the designer was too cheap to do the job right...
>
> Built cheap, for the cheap! Move along folks, nothing to see here... Move along...  Keep moving...
>
>
> denny / k8do
>
>
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