All Questions
7
questions
0
votes
0
answers
35
views
Pulse to sine with the same frequency
I have a pulse signal with frequency f(t)
And i want to generate from it a sine signal with frequency f(t)
(f(t) doesn't vary a lot in time)
Is there a method to do it directly with a function ...
- 13
2
votes
1
answer
49
views
How a switching mixer works in this example circuit?
I am reading about lock-in amplifiers and came across this example circuit of a mixer:
You have one sinusoidal input signal $e_1$ with a phase $\phi_1$ and the local oscillator has a square-wave ...
- 229
0
votes
1
answer
170
views
Does phase of a signal (very low frequency, 0-100Hz) change due to pink noise?
One might experience pink noise when dealing with low frequency signals (0-100Hz). Curious to know whether pink noise has an effect on phase of the signal specially in lowest frequencies 0-10Hz.
- 235
14
votes
10
answers
8k
views
Why does a capacitor act as a frequency filter?
What is it about a capacitor which allows it to filter frequencies?
I understand the construction of a high-pass RC filter, and the mathematics behind it, but I'm struggling to find an explanation of ...
- 267
0
votes
1
answer
34
views
RLC Bandpass Filter network
Can anybody tell me what the "s" in this equation is? I am looking for the transfer function of this circuit
0
votes
1
answer
185
views
What does the phase discriminator portion of the Costas Receiver do mathematically?
What does the phase discriminator portion of the Costas Receiver do mathematically?
The output of the $I$-channel is $ \frac{1}{2}A_C \cos \phi \, m(t) $. Which means for small deviation of phase $ \...
- 33
1
vote
3
answers
910
views
Electronic filter
Can you explain, please, step-by-step how an electronic filter does work?
For example, high pass filter. I know It's a trivial things, but I can't get it completely. Don't bring me formula and etc. ...
- 19