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A filter can be designed using an op amp by by replacing the resistors in an inverting or non-inverting amplifier with inductors or capacitors. Search for "op amp" on wikipedia for some simple schematics as a starting place. If you understand the basics of filter output and bode plot calculations, you should be able to replace R1 or R2 with C1 (1/jC1w) or L1 (jwL), and analyze the output vs. input characteristic.
Note op amps have limitations on frequency response, so this approach is good for fairly low frequencies - if you get into the high MHz, or GHz, a passive filter circuit becomes necessary.
What else can I help you with?
What is the roll of bleeder resistance in LC filter circuit and what will happen if the bleeder resistor is not used in circuit?
jgfkf
What would be the purpose of connecting a parallel-tuned circuit into an antenna circuit?
The parallel-tuned filter in antenna circuit rejects only the undesired frequencies.
Can you replace a 47UF 160v capacitor on your tv with a 100UF 160V?
That depends what circuit it is in. If it is in a sweep circuit (vertical/horizontal) no because it will change the frequency of the circuit. If it is in a power supply circuit, probably yes becuase it is probable only being used as a filter. BUT if that leg of the power circuit supplies a sweep circuit, no.
What is the advantage of capacitor filter over inductor filter?
An inductive filter is in fact an LC circuit in which an inductor is connected in series with the capacitor. This arrangement is also known as a low-pass filter. http://www.answers.com/topic/inductive-filter
What does the PLL consist of?
PLL stands Phase Locked Loop . It consists of phase detector,low pass filter,voltage controlled oscillator,error amplifier
WHAT is the role of an instrumentation amplifier in strain gauge measurement system and WHY do we place the amplifier before the filter in the channel?
The instrumentation amplifier provides isolation, and gain to the output of the Wheatstone Bridge. It is placed before filtering because the low output of the gauges would suffer from induced noise in the filter circuit if left unamplified.
What circuit uses negative feedback?
Operational amplifiers (op-amps) use negative feedback in various electronic circuits to stabilize and control the gain. Negative feedback is employed to reduce distortion, increase bandwidth, and maintain precision in the output signal. It is a common technique used in amplifier, filter, and oscillator circuits to improve performance and stability.
How radio works step by step?
Exciter Power amplifier Input filter/amplifier Demodulator Audio processor
What are the steps when a radio message passes through between the sender and receiver?
Exciter Input filter/amplifier Demodulator power amplifier audio processor
What if both lights are not lit on Belkin F9H601aCW?
There is no power to it. The 'protected' light indicates that the filter circuit is operational and has power to it. The 'grounded' light indicates whether a device is properly grounded. But it still needs power to the surge protector to light it.
What is the use of active power filters?
An active filter is a type of analog electronic filter that uses active components such as an amplifier. Amplifiers included in a filter design can be used to improve the performance and predictability of a filter, while avoiding the need for inductors (which are typically expensive compared to other components). An amplifier prevents the load impedance of the following stage from affecting the characteristics of the filter. An active filter can have complex poles and zeros without using a bulky or expensive inductor.
What is the simplest component in a filter circuit called?
capacitor
How do you use series RLC circuit as band pass filter?
by combining a low-pass filter with a high-pass filter.[1]
What is the roll of bleeder resistance in LC filter circuit and what will happen if the bleeder resistor is not used in circuit?
jgfkf
Why to have a filter before and after a low noise amplifier?
To cut off unwanted frequencies, unwanted frequencies are called noise.
What would be the purpose of connecting a parallel-tuned circuit into an antenna circuit?
The parallel-tuned filter in antenna circuit rejects only the undesired frequencies.
How do you improve the filter in a circuit to reduce noise?
Install a bigger one
