Tagged Questions
0
votes
1answer
106 views
Active low pass filter giving constant output regardless of input
I have a sensor that gives me an output between 1 and 4V, and I wanted to filter out noise present on the output to give me a more stable and accurate reading.
I set up an active 2nd-order ...
5
votes
5answers
204 views
How to recognize the type of analog filter given its topology?
Having trouble to tell what kind of filter (Low-Pass, High-Pass, Band-Pass, Band-Reject(Notch) are present given a topology in cascade.
In the following picture I see 3 stages, is this ok? (2 active ...
0
votes
3answers
221 views
Eliminate hiss and noise
ATTiny is generating PWM based tones with 32kHz sampling rate. Then I've created R-2R DAC and then trying to amplify it for the speaker.
I need to make low pass RC filter, to cut PWM hiss during ...
2
votes
1answer
252 views
Flash an LED to music
Im trying to flash an LED to music.
I have tried to follow this article and calculate values but cannot get it to go.
Basically what i think i need is:
audio in
through a low pass filter (isolate ...
2
votes
1answer
451 views
Low Pass Filter Design [duplicate]
Possible Duplicate:
Injecting a communication signal over DC power supply lines
I have a pretty simple circuit, but I need to send an output PWM signal through the same place I'm getting my ...
2
votes
1answer
608 views
Filter Design with Opamps Query
While I was reading about filter design, and going through the schematics, the following 2 questions popped up in my mind and I could not find a satisfactory answer to them:
1) A first order low pass ...
1
vote
2answers
398 views
Design a 1 GHz lowpass filter
I want to design a 1 GHz low-pass filter. I have tried to find a COTS lowpass filter at such high frequencies but I can't find one.
Hence, I have decided to design one using microstrip lines. So, ...
4
votes
2answers
544 views
100W Low Pass Filter
Currently I have a 60W amplifier for the 400-500MHZ band with a 50Ω impedance. In order to prevent jamming other frequencies I will need a low pass filter to block any frequencies above 500MHZ. I just ...
2
votes
2answers
598 views
How to correctly simulate this filter?
I am trying to design a low-pass filter for a 24V, DC, 10A power line to suppress EMI, RF interference and noise in a bus. There is no ground(chassis). I am trying to simulate this filter that was ...
5
votes
1answer
132 views
TI Application Report - What are those additional resistors in the low pass filter
I was searching some documents and tutorials online for filter design. Then I stumbled upon this TI application report. The following is referring to section 2, figure 7 and figure 8 of the paper. I ...
