Build a RC bandpass filter to pass only 60Hz

In summary, the individual is looking to build a RC bandpass filter with a butterworth response and a bandwidth close to 60Hz. They want an active filter for their power supply and are seeking an integrated circuit that does not require a separate supply voltage to operate and has a passband of 60Hz. However, it is not recommended to use an active filter for a power supply as it would need to supply the power and may not be able to handle high power levels. Instead, it is suggested to use LC passive filters.
  • #1
Idea04
194
1
I'm wanting to build a RC bandpass filter to pass only 60Hz. But I do not know what capacitors and resistors to use. Can anyone tell me what capacitor and resistors I should use?
 
Engineering news on Phys.org
  • #2
Idea04 said:
I'm wanting to build a RC bandpass filter to pass only 60Hz. But I do not know what capacitors and resistors to use. Can anyone tell me what capacitor and resistors I should use?

What is the application? What order filter do you want? What polynomial? What width? Active or passive? Is this for some power application?
 
  • #3
I'm looking for a butterworth response, bandwidth to be as close as possible to 60Hz, active filter and it is for power supply. I have a lot of frequencies all on one line and I want to get rid of the unwanted frequencies. I was looking at different types of filters like the switched capacitor filter but it requires a separate supply voltage to operate. And the op-amp requires external parts. What I am looking for is an intergrated circuit that doesn't require a separate supply voltage to operate. And is programed to have a passband of 60Hz.
 
  • #4
Idea04 said:
I'm looking for a butterworth response, bandwidth to be as close as possible to 60Hz, active filter and it is for power supply. I have a lot of frequencies all on one line and I want to get rid of the unwanted frequencies. I was looking at different types of filters like the switched capacitor filter but it requires a separate supply voltage to operate. And the op-amp requires external parts. What I am looking for is an intergrated circuit that doesn't require a separate supply voltage to operate. And is programed to have a passband of 60Hz.

You wouldn't normally use an active filter for a power supply. The active circuit would then have to supply the power, and you're not going to get much power out of an opamp.

What is the RMS voltage level of the 60Hz signal? How much power are you passing through? It sounds like you should look at LC passive filters:

http://www.diyaudio.com/forums/showthread/t-112384.html

http://electronicdesign.com/Articles/Index.cfm?AD=1&ArticleID=2874
 

FAQ: Build a RC bandpass filter to pass only 60Hz

1. What is a RC bandpass filter?

A RC bandpass filter is an electronic circuit that can be used to selectively pass a specific range of frequencies while attenuating all other frequencies. It consists of a resistor (R) and a capacitor (C) connected in series.

2. Why do I need to build a RC bandpass filter to pass only 60Hz?

You may need to build a RC bandpass filter to pass only 60Hz if you want to eliminate any unwanted noise or interference from your electronic circuit that operates at this frequency. For example, in audio applications, a 60Hz hum is a common problem that can be filtered out using a RC bandpass filter.

3. How do I calculate the values of R and C for my RC bandpass filter?

The values of R and C can be calculated using the formula: f = 1/(2πRC), where f is the desired frequency to be passed. You can also use online calculators or consult a reference book for standard values of R and C for different frequencies.

4. Can I use any type of resistor and capacitor for my RC bandpass filter?

Yes, you can use any type of resistor and capacitor as long as they have the appropriate resistance and capacitance values. However, it is recommended to use high-quality components to ensure better performance and reliability of your filter.

5. How can I test the effectiveness of my RC bandpass filter?

You can test the effectiveness of your RC bandpass filter by using a frequency generator to input signals at different frequencies and measuring the output using an oscilloscope. The desired frequency (in this case 60Hz) should have a higher amplitude compared to other frequencies, indicating that it has been passed through the filter successfully.

Similar threads

Replies
29
Views
4K
Replies
5
Views
2K
Replies
15
Views
5K
Replies
15
Views
1K
Replies
6
Views
2K
Replies
22
Views
6K
Replies
2
Views
1K
Back
Top