[AMPS] pi vs. t tuned input

[Rich Measures]

>
>> Date:          Wed, 10 Jun 1998 05:45:24 +0000
>> From:          Scott Townley <nx7u@primenet.com>
>> Subject:       [AMPS] pi vs. t tuned input
>> To:            amps@contesting.com
>
>> 
>> About tuned input sections for amplifiers:
>>.......
>> Should I "roll my own" on
>> powdered iron toroids?
>
>Yes, it is virtually impossible to saturate powdered iron

Agreed 
> 
> or ferrites because they overheat long before saturation occurs. 

  I have managed to saturate ferrite cores without causing them to 
overheat.  How do I know the core was saturating?  I could see the 
harmonic distortion on an oscilloscope, and. dozens of UHF TV signals 
were being wiped out by a 7MHz-fundamental signal.  
.   For tuned inputs, powdered-iron slug tuned cores seem to work well.  



Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm