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'Motorboating,' What It Is, and Why - mcmlv.org
http://www.mcmlv.org/Archive/Amp_Design/Motorboating.pdf
"Motorboating," What It Is, and Why Author: O.D. Westcott Subject: How to stop motorboating in resistance-coupled audio amplifiers Keywords: motorboating resistance-coupled audio amplfier Created Date: 8/9/2002 10:47:53 PM
amplifier - LM386 motorboating that goes away with a ...
https://electronics.stackexchange.com/questions/413891/lm386-motorboating-that-goes-away-with-a-resistor-in-parallel-with-the-bypass-ca
As a kid, I built many amplifiers, with 4 or 5 or 6 stages gain, that oscillated because of VDD resistance (and impedance). When I added 5,000uF capacitors, installed directly at the final stage (that drove 1Kohm earphones), the motorboating finally ended and I could hear the thermal noise. \$\endgroup\$ –
Tube Amp Motorboating - YouTube
https://www.youtube.com/watch?v=ThtE2hAuiIk
Thanks Aart!This video includes a sound clip of motor-boating and discusses how to fix the problem. The problem is generally found in single-ended tube amps ...
What causes "Motorboating"? | Telecaster Guitar Forum
https://www.tdpri.com/threads/what-causes-motorboating.210392/
Motorboating is what happens when an electronic audio circuit, designed to operate at frequencies between 30 cycles per second (nowadays 1 cycle per second is referred to as a "Hertz"--named after some guy named Hertz, obviously, who figured out this stuff.
Problem with amplifier.... "motorboating" noise ...
https://www.diymobileaudio.com/threads/problem-with-amplifier-motorboating-noise.85954/
Our 0.1 V signal is reduced to 0.01 V by this divider. The op-amp wants to make its -IN voltage equal to its +IN voltage, so it raises its output voltage by a factor of 10. Now the output is 1.0 V, which is divided down to 0.1 V by the feedback loop resistors, so the op-amp is happy. We have voltage gain.
"Motorboating" Pre Amp | All About Circuits
https://forum.allaboutcircuits.com/threads/motorboating-pre-amp.80166/
Audioguru said: Variations of current in the power amp causes the supply voltage to jump up and down. The very simple biasing of the preamp amplifies the jumping voltage causing motorboating PUT, PUT, PUT sounds. Filter the biasing of the preamp better, filter the supply voltage better or regulate the supply voltage to the preamp.
Question- amp motorboating | The Gear Page
https://www.thegearpage.net/board/index.php?threads/question-amp-motorboating.1309997/
207. Aug 21, 2013. #1. I have a peavey classic 30 that has been making a putt-putting oscillation noise. I've seen this referred to as "motor boating," and everything I've read says that it is always caused by a bad electrolytic cap in power supply. I just did a cap job though, and the amp is still doing it.
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