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Blocking capacitors – PS Audio
https://www.psaudio.com/pauls-posts/blocking-capacitors/
May 20, 2020. by Paul McGowan. For many, many years we blocked unwanted signals and voltages with capacitors in the signal path. These were appropriately named, blocking capacitors, bits and bobs of circuitry designed to keep everything from DC to turntable rumble out of our stereo reproduction chains. And then one day we focused all our efforts on removing …
voltage - Which capacitor for DC blocking in audio ...
https://electronics.stackexchange.com/questions/182505/which-capacitor-for-dc-blocking-in-audio-applications
For audio applications (as opposed to decoupling) there really aren't any high frequency transients to deal with, so a capacitor with a self-resonant frequency well above the audio range should be sufficient. An electrolytic capacitor is of course polarized, and only useful if the DC+signal is always unipolar.
What is a good audio DC blocking capacitor? - Quora
https://www.quora.com/What-is-a-good-audio-DC-blocking-capacitor
The best capacitors for audio is no capacitors at all. Capacitors for audio are primarily concerned with those in the signal path, but for the most part, at the design level (or product modification), those capacitors can be eliminated for a DC coupled system.
Choosing blocking capacitors it’s more than just values
https://www.knowlescapacitors.com/getmedia/cc9c323f-1b02-4124-8586-aa9d13370ed8/DLI_-V-series_TechPaper_Vol1_Final2.aspx
block DC current and pass AC current. This makes capacitors a fundamental building block in Radio Frequency (RF) and microwave systems. They are often used to create filters, generate DC protection, and to create bypass networks. Often designers use rules of thumb or approximate equations to link capacitor values to final RF performance.
For DC blocking in audio applications, would you choose …
https://www.quora.com/For-DC-blocking-in-audio-applications-would-you-choose-an-electrolytic-or-ceramic-capacitor-How-do-you-choose-the-value
For blocking DC signal in audio applications, we usually use 20 ( H z) as our cut-off frequency. So the value of your capacitor depends on the second circuit's input impedance. Assuming the impedance is hi Continue Reading Related Answer Oscar Desmonteix , …
Question on input dc blocking capacitors | diyAudio
https://www.diyaudio.com/community/threads/question-on-input-dc-blocking-capacitors.225459/
It is part of a passive RC high-pass filter, which is formed whenever a series capacitor is followed by a "shunt" resistance to ground. A high-pass filter attenuates low frequencies, not letting them pass as well as it does higher frequencies.
Coupling Capacitors
https://sound-au.com/articles/coupling-caps.htm
2.0 - Coupling Capacitors. The purpose of a coupling cap is to pass the wanted audio (AC) signal, while blocking any DC from preceding stages or source components. DC will cause pots to become noisy (scratching noises when operate), and cause relatively loud clicks when (if) muting relays or similar are used.
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