Low noise 60 Hz notch filter circuit

In summary, the conversation discusses the need for a very low noise 60 Hz notch filter circuit that will not attenuate over 100 or a low noise bandpass from 100 to 20000 hz. A Burr-Brown active notch filter at 60 Hz with separate low-pass, band-pass, and high-pass filters is suggested as a possible solution. The possibility of eliminating 60 Hz noise coupling and modifying the signal to avoid 60 Hz interference is also mentioned. The application for this filter is not specified.
  • #1
m718
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Does anyone have a very low noise 60 Hz notch filter circuit that will not attenuate over 100
or a low noise bandpass from 100 to 20000 hz .
 
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  • #3


m718 said:
Does anyone have a very low noise 60 Hz notch filter circuit that will not attenuate over 100
or a low noise bandpass from 100 to 20000 hz .

You want a sharp notch to supress 60Hz and not attenuate 100Hz?

A better approach might be to eliminate the 60Hz noise coupling first, so that it doesn't show up in your signal channel. And/Or, do something with your signal to move it away from 60Hz (modulation, etc.).

What is your application?
 

What is a low noise 60 Hz notch filter circuit?

A low noise 60 Hz notch filter circuit is an electronic circuit designed to eliminate or reduce unwanted signals at the 60 Hz frequency, commonly known as the AC power frequency. This type of filter is commonly used in electronic devices to improve the quality of the signal and reduce interference.

How does a low noise 60 Hz notch filter circuit work?

A low noise 60 Hz notch filter circuit works by using a combination of capacitors, resistors, and inductors to create a frequency-dependent impedance that attenuates signals at the 60 Hz frequency. This allows for the desired signals to pass through while effectively blocking or reducing unwanted 60 Hz signals.

What are the benefits of using a low noise 60 Hz notch filter circuit?

The main benefit of using a low noise 60 Hz notch filter circuit is that it helps to improve the quality of the signal by removing unwanted noise and interference. This can result in clearer and more accurate signals in electronic devices such as audio equipment, medical instruments, and communication devices.

Are there any limitations to using a low noise 60 Hz notch filter circuit?

While a low noise 60 Hz notch filter circuit can effectively eliminate or reduce unwanted signals at the 60 Hz frequency, it may also affect the overall frequency response of the circuit. This means that it is important to carefully design and adjust the filter to achieve the desired results without impacting the desired signals.

Is a low noise 60 Hz notch filter circuit suitable for all types of electronic devices?

A low noise 60 Hz notch filter circuit can be used in a wide range of electronic devices, but its effectiveness may vary depending on the specific application and the type of signals being filtered. It is important to consider the specific needs and requirements of a device before deciding to use a low noise 60 Hz notch filter circuit.

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