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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Problem in my MFOS Oscillator Circuit
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eventi



Joined: Jun 23, 2009
Posts: 7
Location: New Jersey
PostPosted: Sat Jul 18, 2009 4:51 am    Post subject: Problem in my MFOS Oscillator Circuit
Subject description: seeing -9.6v		 Reply with quote  Mark this post and the followings unread
I'm building the circuit here:
http://musicfromouterspace.com/analogsynth/VCO200604REV01/VCO200604REV01.html

After building page one, which should produce a ramp wave, I plugged in a headphone speaker to the point labeled RAMP on the schematic, got a loud pop, and the power supply shut down (I'm using a computer power supply's +-12V)

Eventually I figured out that there is DC Voltage (around -9.6V) between the RAMP point and ground. I checked for shorts, but it looks good

Any ideas?
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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
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