Re: [TenTec] 4229 Tuner Balun Replacement?

[Steve Hunt <steve@karinya.net>]

On 15/11/2010 00:24, Dr. Gerald N. Johnson wrote:
> Yet if the common mode voltage is enough it conceivable could saturate
> the core.

If you do the thermal calculations on the cores commonly used in these 
chokes you'll find it's almost impossible to saturate them - for typical 
amateur mode duty-cycles they will over-heat and fracture at flux 
densities well below those at which they saturate. And that problem is 
avoided by designing them to have very high CM impedance.


73,
Steve G3TXQ
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