[AMPS] Re: 4 to 1 un-un at the tank output...

[measures@vcnet.com (measures)]

>
>Re:
>
>"A stack of three large yellow powdered iron torroids
>wound with #10 awg wire will loaf @ the 5kw level."
>
>We're talking about using a 4 to 1 un-un transmission line transformer
>on this thread. The appropriate core material for this application is
>ferrite, typically #61. Broadband transmission line transformers require
>high permeability cores. Reference for  this is "Transmission Line
>Transformers" book.
>
 For this application, Type 61 ferrite is rated by the manufacturer at 
10MHz max.   Using type 61 (mu=c.125) material at 14MHz, sinewave 
distortion can easily be seen on an oscilloscope.   Type 43 ferrite is 
rated at 50MHz.

cheers
>


-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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