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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Do I understand this correctly posted by Nickel Core on February 15, 2006 at 02:26:17:
Yes, 107Hz is pretty close. In reality, you will want to tweak the value of the C to find the resonance for your 2X line frequency. But now, you have created a capacitive divider at high frequencies. If you follow this LC tank with a shunt 50uF cap, just for example, the ultimate rejection of high frequency noise can be no better than 0.22/(0.22+50) = -47dB. Without the 0.22uF cap, the high frequency rejection will continue to fall at a -12dB octave rate. All of these discussions assume a low ESR, low ESL 50uF cap, or one that is well bypassed by smaller caps. As always, try it and see which way you prefer the sound.
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- Yes, I think so - BBeck 06:02:07 02/15/06 (0)
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