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Low distortion audio oscillator board/kit - are any still ...
https://www.eevblog.com/forum/testgear/low-distortion-audio-oscillator-boardkit-are-any-still-available/
Low distortion audio oscillator board/kit - are any still available? There used to be one or two of these available - fixed frequency oscillator boards with low distortion at a very reasonable price. Some were kits and some were pre-stuffed boards ready to …
An ultra low-distortion oscillator with THD below -140 dB
http://www.janascard.cz/PDF/An%20ultra%20low%20distortion%20oscillator%20with%20THD%20below%20-140%20dB.pdf
A low-distortion oscillator is necessary for testing today’s ADCs (analog-to-digital converters) that have resolution higher than 20 bits. Low-distortion amplifiers with THD (total-harmonic distortion) of -120 dB or less also need such an oscillator for …
Other - Low Distortion Oscillator - Trout Underground
https://troutunderground.com/Other-Low-Distortion-Oscillator/
HP 239A Ultra Low Distortion Oscillator Tested in good working and physical condition. See photos. Any additional equipment in photos is not included. The 239A covers from 10 Hz to 110 kHz in 4 overlapping decade ranges with 2 digit resolution. The output level is variable from 1 millivolt to 3.16 Vrms into 600 ohms. Powered by The free listing tool.
ultra-low distortion audio oscillator | diyAudio
https://www.diyaudio.com/community/threads/ultra-low-distortion-audio-oscillator.141596/
ultra-low distortion audio oscillator. recently i've gotten the itch to map out a design for a circuit/system which would measure the THD+N and frequency response of a homebrew amplifier. the main design goals are low cost, practical assembly, and relatively good performance. essentially, a tuneable harmonic oscillator sends a signal through the amp under …
An Ultra Low Distortion Audio Test Oscillator - Internode
http://www.users.on.net/~endsodds/ao.htm
An Ultra Low Distortion Audio Test Oscillator This project was published in the March 2010 issue of the Australian magazine "Amateur Radio", and uses a unique circuit and cheap readily available components to acheive laboratory grade performance. DOWNLOADS A spectrum analyser display of the oscillator output at 600Hz showing a THD of 0.01%.
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