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"Cecil Moore" wrote in message ... Diego Stutzer wrote: Now the hard part. How does one create an Impedance, which decreases "slower", for frequencies close to zero but then decreases "faster" for higher frequencies, than the simple parallel RC-Circuit? Is there some kind of procedure like the one for syntesizeing LC-Filters (Butterworth, Chebychev,..)? For emulation modeling, there exist programmable resistors, capacitors, and inductors. Is that what you have in mind? -- 73, Cecil http://www.qsl.net/w5dxp I think he is looking for slopes of less that 6 dB per octave. -- Steve N, K,9;d, c. i My email has no u's. |