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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Maybe somebody has tried this already, since there is a large interest in using hammond chokes in the 5-10 henry range... if the F = 1/2pi*sqrt(LC) formula is intendded to be expressed as microfarads-millihenries (I'm not sure about that, so if anyone knows... please let us know)... so, assuming the resonant frequency F occurs at .1559155 *square root(inductance times capacitance)... so if that's right, you add 14 mfd. of capacitance to a Hammond 193Q... and tinker around until you arrive at 60 Hz. resonance... does that give you a performance advantage over a raw choke ?
Doesn't seem unreasonable as there is this patent application for exactly such a concept:
"A filter circuit for removing noise and harmonic frequencies from alternating current power sources. The result of which will improve the performance of audio or video devices powered by said power source. The filter does not limit power flow to the load device. The basis of the filter is an *inductor and capacitor* tuned to the fundamental frequency of the power line."
And then there's Richard Marsh's 5260862, which is a series of anti-resonators (tuned circuits plus a resistor) that sort of do the opposite.. I think this turned into MITs Z-filters, which weren't half bad.. I've still got two of them in use, and they take a lot of urban crap off not super critical lines...
A new idea ? Not exactly. Prior art shows that Jacob F. Klinkhamer first approached this idea in 1950....
But as for reversing the process and using it for resonant support versus resonant damping... ?
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Topic - boosting an AC choke with a capacitor ? - tonemaniac 09:29:11 07/02/07 (2)
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