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Bottlehead Forum Welcome! Need support, you got it. Or share you ideas and experiences. |
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Bottlehead Forum Welcome! Need support, you got it. Or share you ideas and experiences. |
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In Reply to: Re: Hammond 193B and 193C. (plus 157J) - What is the significance of the self-resonance in both power supply and parafeed applications? Have you built posted by Paul Joppa on November 28, 2000 at 21:18:45:
Tech talk:For an LC tank the resonant frequency is given by
F = 1/( 2 * PI * SQRT(L*C) )
For an output transformer with identical windings and capacitance: if we use a core with 10X higher inductance the resonant frequency is SQRT(10) = 3.16 times lower. The lower resonant frequency transformer is probably a better one in an application with out DC current. This one of the reasons why Paul is right when he says to watch the capacitance.
Because the inductance on most of these magnetics changes with frequency, this topic becomes even more convoluted.
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Follow Ups
- Paul's got it right. - Voltsecond 21:48:32 11/29/00 (0)
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