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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
1 volt per octave Calibrator
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Wobuse



Joined: Dec 07, 2011
Posts: 28
Location: Lyons,il

PostPosted: Sun Jun 02, 2013 7:16 pm    Post subject: 1 volt per octave Calibrator Reply with quote  Mark this post and the followings unread

I built the MFOS octave calibrator and put it in this box that has been on my bench top for a long time. The original box had a +/- 12 volt DC power supply ,+/- 5 volt DC,& a adjustable positive DC supply,two LFOs & a sweepable oscillator.
Since I now have a bench top function generator: I removed the oscillator & replaced it with Ray's Calibrator,plus I added a +/- 15 volt DC supply ,for the Thomas Henry stuff.
Here is the front ,after the mods
Posted Image, might have been reduced in size. Click Image to view fullscreen.

The back with new board installed....

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Here is my meter measuring Hertz..
Question
I am thinking about getting a dedicated frequency counter.
Anyone have an opinion on that ??
Question

Posted Image, might have been reduced in size. Click Image to view fullscreen.
Here is a video of the calibrator running through its steps..you can here the pitchs in the backbround.and see the DC steps on the meter.

Video on Youtube
http://www.youtube.com/watch?v=mOTlJqy5NpI

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