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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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In Reply to: Re: Ferrite/plug test results posted by APM on June 19, 2000 at 12:34:18:
APM wrote:Pete my examples were of an resonate tank circuit. And yes that has a lot to do with this if your following the entire bits of conversation here. This topic has been brought up as a posible answer and I thought it would be nice if I found a couple articles explaining what a tank circuit was.
But your tweak isn't a tank circuit. It's a series resonant circuit. Since the reactive elements in your tweak are not in parallel, there's no closed current path between the reactive elements in your tweak for them to self-oscillate (which is what a tank circuit does).
Again, here's the model of your tweak:
Here's a tank circuit from Handbook of Electronics Calculations for Engineers and Technicians, Second Edition (Kaufman and Seidman, McGraw Hill):
The reactive elements are in parallel, which creates a closed loop for the oscillating current to flow. From page 9.5 of the same reference:
An RLC circuit such as Fig. 9-4a is sometimes called an antiresonant circuit and also a tank circuit. At resonance the capacitor alternately is charged through the coil, then discharged the opposite direction through the coil. If there were no circuit resistance, the system would oscillate forever. However, that is not the case. At the antiresonant frequency, the tank circuit presents a very high impedance to the circuit current, even though the internal tank current is high. Circuit power is dissipated only in the resistance.
se
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Follow Ups
- Re: Ferrite/plug test results - Steve Eddy 13:56:22 06/19/00 (0)
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