New answers tagged signal
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Is this system causal? Why or why not?
If x is your main signal and d is some other signal then sure, you may consider x as your “input” and d as your “coefficient”
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Connecting with a mobile phone over a 2-3 ft distance, and not beyond that
There's no technology that I'm aware of that cheaply achieves localization accuracy to that degree, and if you went by channel properties, things get pretty expensive pretty fast as well. The problem ...
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Split WS2812B controlling each branch as if one contiguous strip
Get a microcontroller with three outputs and write a function in software that maps pixels 0-29 to output 0, 30-59 to output 1 and 60-89 to output 2.
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Load cell simulator-mV/volt generation
I suggest you use much lower value precision resistors for R1/R4 and shunt the pot element with a low value precision resistor.
For example, if you use 10kΩ 1% resistors then to get 125mV across the ...
- 384k
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Identifying a line code/binary signal
With constant bit time and variable on-off phases, this is a variety of pulse width modulation. PWM is most commonly used for encoding an analogue signal; however there's no reason we can't use it for ...
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Identifying a line code/binary signal
This does not immediately resemble any known protocol, not even IR protocol, so it must be a vendor specific custom protocol, likely with their own internal name for it.
Looks like pulse length (width)...
- 138k
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Is the voltage on the negative of a differential pair actually below the ground voltage used to generate the signals?
In the story below, I have introduced the idea of differential signaling step by step, in the form of an imaginary story. I have illustrated it by a series of CircuitLab experiments (I think this will ...
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Is the voltage on the negative of a differential pair actually below the ground voltage used to generate the signals?
Edited: The answer in this case is no.
One further example is so called phantom power used in powering (professional) microphones. The microphone preamp outputs +48 V on both "hot" and &...
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Is the voltage on the negative of a differential pair actually below the ground voltage used to generate the signals?
Label the wires of a differential pair as \$a\$ and \$b\$. The voltages \$V_a\$ and \$V_b\$, relative to an arbitrary voltage (\$V_{ref}\$), swing above and below the average of the two voltages,$$V_{...
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Is the voltage on the negative of a differential pair actually below the ground voltage used to generate the signals?
The differential voltage - carrying the information - tells you nothing about the voltage the individual lines are swinging around.
In fact it's not very common for any line to swing below the ...
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Is the voltage on the negative of a differential pair actually below the ground voltage used to generate the signals?
Figure 1. RS485 biasing network. Image by Stündle, Creative Commons. Note that both lines are biased positive and with the resistor values shown the + and - lines will be roughly 55% and 45% of supply ...
- 171k
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Balanced vs differential signals
This is my view of the problem
According to the electromagnetic theory of guided TEM waves: the current flowing at the surface of the central conductor and that at the inner surface of the shielding ...
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How can I cover my pressure transmitter sensors with a material that will protect it from being dirty and at the same time not interfere with signal
This is a tiny bit simplifying, but any nonconductive material you're likely to meet is going to not absorb RF energy. So, ABS, PET, Teflon, dry wood, acrylic, polyurethane foam, fiberglass/polymer ...
- 90.8k
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Balanced vs differential signals
Here are some equivalent circuits you may find illustrative:
simulate this circuit – Schematic created using CircuitLab
Consider for sake of argument, the values of impedances don't matter, ...
- 27.5k
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Sharing ground between circuit and audio input?
If AudioIn+ AudioIn- are line outputs or headphone outputs then yes, you can connect them to this circuit as you described.
However, this is a very basic circuit with a lot of issues.
It won't handle ...
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Name and cause for phenomenon in microphone preamp output as seen on scope screen
Finally I found out the reason for this behavior and an easy fix, which has helped to get approximately from 15 to 20 mics working correctly again.
The reason is as follows: the mic capsules had been &...
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TDM signal conditioning
Your cable is probably 50 or 60 ohms single ended impedance.
This porch you see on the rising and falling edges of the signal indicates that whatever is driving the cable has an output impedance close ...
- 10.3k
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TDM signal conditioning
TDM has 3 signals: Frame sync, clock, data.
Digression:
These need to be aligned in time properly. The source emits sync and data on the falling edge of clock, and the receiver samples sync and data ...
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Can I convert a mini guitar-amp into a portable auxiliary speaker?
If there are 8 pins, there are 7 frets on the shirt so each one of 7 makes a pitch and the 8th is ground. If you grab ground and any other pin it’ll make sound though the pitch may be pretermined. ...
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How can I attenuate noise from synchronous divider and OCXO?
You are taking your output from pin 4 of the last 4017. This is a 10% duty cycle waveform, so you would expect a large amount of 2nd harmonic. In fact all harmonics would be present in large amounts ...
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Is it possible to add headphones to a Geiger counter circuit?
Sure. The piezo clicker will have a voltage across it (creating the click) which you could process into a digital signal to feed to a micro controller. Your micro controller can then receive the click,...
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Understanding Signals, LTIs and Electrical Circuits
All electrical circuits made from LTI components are LTI systems. This is handy, as many components like fixed resistors, capacitors, inductors are, or are approximately, linear and time invariant. ...
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