MFOS VCO Calibration Part I
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Uploaded by theraywilsonshow on Jan 31, 2010
In this video I show how to calibrate an MFOS oscillator in which I have used a hand matched pair of 2N3904 NPN transistors. I tried to get this down to one ten minute video but I just couldn't. It is now a two part series. This is part I. I am able to achieve 8 octaves of range. If you have not read the article on Practical Transistor Matching on MFOS at http://www.musicfromouterspace.com/analogsynth/TRANSISTORMATCHER/TRANSISTORMA... you might enjoy it.
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Thank you for making these videos, all the text info on your website, and your open projects. It is all super helpful!
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Very interesting video :)
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The callibrator is a life saver Ray , used it on my 6 mfos vco's , the big blue Scottish modular is totally in tune now.
thanks again Ray.
Dave.
sinewaveDave2010 1 year ago
@sinewaveDave2010 You're totally welcome. It makes it a little easier anyway.
theraywilsonshow 1 year ago
Thanks for this, I'm about to start building a MFOS VCO. Is the circuit for that voltage reference box up on your site yet?
loydblankenship 1 year ago
Visit MFOS and look down the right column of the home page and you'll find the transistor matcher and the oscillator calibrator.
theraywilsonshow 1 year ago
Thanks. I tried to shorten the whole thing but still keep the important parts. This one has less rambling and is more accurate.
theraywilsonshow 2 years ago