RC filter with overunity gain

Dec 04, 2009 2 Replies
T

I remember seeing this before, but I can't find the post... I think it's a parallel T filter, but I'm not finding any numbers. It's supposed to have a peak gain of 1.207 or so despite being made of R's and C's. What is it?



Tim


Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
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J

The solution to the energy demands of our planet :-))

SCNR, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
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V

There are infinitely many ways to do that; perhaps the simplest is put lowpass or highpass RC on the top of the other lowpass or highpass RC.

---R1--- | | | C1 | | |--R2--| | C2 | GND

R1 C1 ~ R2 C2

R1 >>> R2

Vladimir Vassilevsky DSP and Mixed Signal Design Consultant

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