Questions tagged [noise]
Noise is an unwanted disturbance in an electrical signal. This tag is for questions about sources of noise, noise types, issues caused by electrical noise, or improving the signal-to-noise ratio of an analog circuit.
2,289 questions
2 votes
0 answers
38 views
How does common mode voltage affect kickback noise of a StrongARM latch?
In a StrongARM Latch, how does common mode voltage affect the kickback and offset of a comparator? Can you point me to a reference to better understand this (reading material)? Here is the StrongARM ...
- 73
-1 votes
2 answers
59 views
Noise Reduction
I know how important it is to use capacitors to reduce noise in a DC circuit. I use them to ensure Vs is clean for any ...
- 163
3 votes
1 answer
136 views
PCM3168A + STM32 SAI TDM: Periodic Noise at Low Sample Rates (16 kHz / 8 kHz)
I’m using TI’s PCM3168A audio codec on a DSP development board together with an STM32H725IGT, connected via the SAI peripheral in TDM mode. At sample rates of 48 kHz and 32 kHz everything works ...
- 139
-1 votes
1 answer
40 views
How to change global ambient temperature in Multisim 14.3 (without using a temperature sweep) to demonstrate the accuracy with noise in the system?
Does anyone know how to change the temperature of the workspace in Multisim Version 14.3 without having to rely on a temperature sweep? Since the noise doesn’t appear during the temperature sweep, I’m ...
- 409
3 votes
1 answer
181 views
Obscure method of supression of transient voltage spike in CLC-circuit
Surfing through the library of everycircuit.com I've run into this example of voltage spike supression in CLC-circuit with a diode. On the screenshot below the green curve is almost perfect comparing ...
- 229
2 votes
2 answers
156 views
What are the sources of noise for electricity in a power grid?
What are the sources of noise for electricity in a power grid? Is noise picked picked up in transmission lines, transformer stations, or elsewhere, or is noise primarily do how the power is generated? ...
- 557
0 votes
1 answer
121 views
Is AC from a DC→AC inverter less noisy than that from the grid?
Is the AC from a DC→AC inverter less noisy than the AC from the power grid? I'm wondering if residential solar energy is "cleaner" in the sense of less noisy than that from the power grid. ...
- 557
0 votes
1 answer
102 views
What is the current loop of the high frequency switching?
LM27762 is a charge pump combined with an LDO. It outputs a +2.5 V and a -2.5 V. The charge pump portion switches at 2 MHz. I am not worried about the ripple noise at 2 MHz + harmonics I will take ...
- 117
2 votes
0 answers
87 views
Marine autopilot repair - unknown switching noise on quad opamp
I'm repairing my sailboats autopilot power module (Raymarine SPX10), which among other circuits, also contains a MEMS gyroscope. I discovered that the signal conditioning quad-opamp TLV2264 had failed ...
- 96
0 votes
0 answers
57 views
Am I measuring Buck-Boost Converter noise correctly?
I am using this buck boot converter for Powering my microcontroller development board. The buck boost converter board will be powered using a battery. The schematic of buck boost controller is given ...
- 4,107
0 votes
4 answers
153 views
Common mode signal definition: why use the arithmetic average of the two signals? Is it empirically motivated?
In a post I made the other day about common mode signal and op-amps, some exchange in the comments led me to note that the definition of \$V_{\text{CM}}\$ seemed rather arbitrary. The canonical ...
- 299
2 votes
3 answers
216 views
What actually causes BER in digital electronic circuits such as PCBs and can it be mitigated with additional capacitance?
A typical 5V Schmitt trigger might have 0.70V of hysteresis. Yet it is a fact universally acknowledged that BER cannot be eliminated from the longer PCB traces. Suppose one places a small additional ...
- 671
3 votes
2 answers
508 views
Op-amp output distorted after adding decoupling capacitors to ±12 V power rails (and need alternative noise filter)
I’m working on a non-inverting op-amp circuit with: AC input: 1 Vpk at 1 kHz DC offset: 2 V in series with the AC signal Gain: 3 V/V ±12 V power rails There is significant simulated noise on the ...
- 409
0 votes
3 answers
131 views
DC Motor regulated with cheap PWM regulator make electrical noise
On my camper with a 24VDC circuit, I've a small computer to show the water tanks level and a DC circulating pump with a PWM speed regulator bought on Amazon, regulating at 60% speed. The computer is ...
0 votes
1 answer
47 views
How to Interpret Noise Specifications for Certain Test Instruments
I am looking up the noise specifications of equipment for a laboratory project. While looking at precision Source-Measure Units from Keysight, I noticed that they specify "Noise (RMS) (<10 Hz)&...
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