Published:2012/10/26 21:03:00 Author:Ecco | Keyword: Low-pass filter, Integrator | From:SeekIC
The circuit is a simple low-pass filter, but also can be used as an integrator. When it is used as integrator, switch S1 is connected to input end, while the S2 is disconnected. R3 is connected when it is used as lower filter, amplification coefficient of the voltage VU=R3/R1. The internal resistor Ri of signal source is much less than R1, and R2 value should be equal to the equivalent value of R3 and R1 connected in parallel.
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