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Audible Noise in Switch Power Supply - Advanced Energy
https://www.advancedenergy.com/globalassets/resources-root/application-notes/en-lv-audible-noise-in-switch-power-supply-application-note.pdf#:~:text=How%20to%20reduce%20the%20fan%20audible%20noise%20in,the%20RPM%20of%20the%20fan%20operating%20speed%20
Audio Myth - "Switching Power Supplies are Noisy ...
https://benchmarkmedia.com/blogs/application_notes/152143111-audio-myth-switching-power-supplies-are-noisy
A well-designed switching power supply can be much quieter than a linear supply. Linear Power Supplies Cause Hum The noise problem is due to the fact that linear power supplies have large transformers and other magnetic components that operate at the AC line frequency (50 Hz to 60 Hz).
Minimizing Noise by Switched-Mode Power Supplies | …
https://www.digikey.com/en/articles/minimizing-noise-generated-by-switched-mode-power-supplies
SMPS noise. According to Dostal, the dominant noise type is the switching noise generated by the switching frequency of the supply. Typically, he says, the frequency band for this noise is between 500 kHz and 3 MHz for non-isolated DC/DC converters. However, because it is dependent on the switching frequency, it can be easily controlled and ...
Audible Noise in Switch Power Supply - Advanced …
https://www.advancedenergy.com/globalassets/resources-root/application-notes/en-lv-audible-noise-in-switch-power-supply-application-note.pdf
How to reduce the fan audible noise in switch power supply • Optimum fan design, choose an optimized fan in switch power supply. • Minimize obstacles in front and behind the fan. • Obstacles on the intake side of the fan negatively impact the noise level more than on the exhaust side. • Lower the RPM of the fan operating speed
How to Reduce Switching Power Supply Noise? | ATO.com
https://www.ato.com/how-to-reduce-switching-power-supply-noise
The switching power supply works at a high frequency, which will change the characteristics of the low-frequency components, resulting in noise. 4. Transformer A transformer in a switching power supply is used for isolation and voltage transformation. However, under high frequency, its isolation is very unsatisfactory.
How to eliminate noise from switching power supply | diyAudio
https://www.diyaudio.com/community/threads/how-to-eliminate-noise-from-switching-power-supply.346947/
That's not switching noise, that's noise from the tablet motherboard I think. Digital computers when running code tend to produce interference at a wide range of frequencies all across the audio band, very much dependent on the pattern of activity.
3 Ways to Reduce Power-Supply Noise | Electronic Design
https://www.electronicdesign.com/power-management/power-supply/article/21808839/3-ways-to-reduce-powersupply-noise
1. In the most general sense, power-supply noise is the combination of unwanted periodic ripple and spikes combined with random noise from the devices or external sources.
Switching Regulator Noise Reduction with an LC Filter ...
https://www.analog.com/en/technical-articles/switching-regulator-noise-reduction-with-an-lc-filter.html
While ripple voltage appears in node A (Figure 1), noise will be much lower in node B. However, if the switch-mode power supply happens to be a buck regulator, and the additional LC filter is at the input of the switching regulator rather than the output, greater noise reduction is possible. This is shown in Figure 2.
How to Eliminate RF Noise in Switching Power Supplies ...
https://forums.qrz.com/index.php?threads/how-to-eliminate-rf-noise-in-switching-power-supplies.578270/
Setting Noise Offset is a high-Q operation, so move 10khz, noise is back. I returned it today, and bought a Powerwerx SS-30M switching PS. It's the same -- it has a S3+hash noise above the linear PS. For years, I've used an Icom 751a with a built-in PS-30 switching power supply and it has been whisper quiet.
Reducing noise on the output of a switching regulator
https://www.ti.com/lit/an/slyt740/slyt740.pdf
Analog Design Journal Power Reducing noise on the output of a switching regulator Introduction Compared to linear regulators, DC/DC converters provide great efficiency for voltage regulation. However, they have an undeserved bad reputation when it comes to systems with sensitive signal paths because of the noise they can generate.
Linear Power Supplies for Audiophiles - Audio Bacon
https://audiobacon.net/2018/06/29/linear-power-supplies-for-audiophiles-getting-closer-to-live/
Linear Power Supplies for Audiophiles – Getting Closer to Live. NEW! Check out the 2021 Linear Power Supply for Audiophiles Shootout! We find power supplies in our tiny cube-shaped iPhone charges, laptop power bricks, and in every wall wart. They help convert mains AC (120V) into usable DC power (12V) for our sensitive electronics.
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