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'Motorboating,' What It Is, and Why
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 ...
My amp is motorboating, improve it with b+ regulator ...
https://www.diyaudio.com/community/threads/my-amp-is-motorboating-improve-it-with-b-regulator.211329/
My amp is motorboating, improve it with b+ regulator ? ... i think the 21st Century Maida Regulator thread on DIY Audio. looks promising, or do you know better or simpler designs or maybe use 2 of these regs to supply the driver and input tubes on each channel seperately. i would need about 144mA each side for bias.
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.
"Motorboating" Pre Amp | All About Circuits
https://forum.allaboutcircuits.com/threads/motorboating-pre-amp.80166/
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.
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