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Low-distortion Audio-range Oscillator
Low-distortion Audio-range Oscillator
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Old 6th April 2018, 04:30 AM   #7081
davada is offline davada  Canada
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Join Date: Jul 2004
Location: Fort St John, BC Canada
suzyj what's the deal with the immaculately clean workshop?
Or was that just for the photo?
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Last edited by davada; 6th April 2018 at 04:41 AM.
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Old 10th July 2018, 12:20 PM   #7082
Armand is offline Armand  Norway
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Join Date: Aug 2005
Default Victor's oscillator measured

I just bought a 1kHz oscillator from Victor and made a notch filter to measure it using an R&S UPV Audio analyzer.
Here it is at 2V RMS with a passive notch that has -10dB at 2kH and -5dB at 3kHz.
Adjusting for the 10db drop from the notch and the signal of 2V (+6dBV) this translates to 2 order of: -153,5dBV + 10dB - 6dB = -149,5dB.
3 order is: -155+5-6 = -156dB.
Very nice result indeed.

Please note that the distortion we see can be from my notch filter using C0G capacitors, so the actual distortion migh well be even lower.
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