Electronics - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - General Questions (Q.No. 9)
9.
Op-amps used as high- and low-pass filter circuits employ which configuration?
Discussion:
11 comments Page 1 of 2.
Dhanu said:
9 years ago
Low pass filter is same as integrator and high pass filter is same as differentiator so the integrator is similar to the inverting amplifier with the exception that resistor RF is replaced by a capacitor. And The differentiator is similar to the inverting amplifier with the exception that resistor RG is replaced by a capacitor.
(1)
Manu M. said:
1 decade ago
I think because of high input impedance in the non-inverting mode, most of the filters are constructed in non-inverting mode.
Roy said:
1 decade ago
@Manu you're correct. Due to high input impedance there is no current flow in the ideal op-amp, i.e. , a non-inverting one.
Kshitij Sharma said:
1 decade ago
Actually I think that non-inverting mode of the Op-amp is used here because of the frequency stability.
Pushp raj said:
1 decade ago
Opam is always used with inverting terminal. Since non inverting terminal has only two state output.
Anmol said:
9 years ago
In the case of filters no loading is needed, so op-amp is used in the non-inverting configuration.
Sumithra said:
1 decade ago
I think voltage is applied noninverting terminal. How the answer is inverting? Anyone explain.
Vikas Sharma said:
1 decade ago
I think we provide voltage at non-inverting terminal.
Can anyone Explain the above answer?
Can anyone Explain the above answer?
Tushar Yadav said:
10 years ago
Can any one explain how it comes ?
Ashif said:
6 years ago
You are correct, thanks @Dhanu.
(1)
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