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by John Simonton When we went on-line in the mid-90s I was very surprised by the interest in the Voltage Controlled Synth Modules that we manufactured during the ’70s and early ’80s.  If you’re not familiar with them there are some pictures in the photo album.  We were often asked if these modules would be reissued. …

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I’ve heard that VCOs have to use temperature compensating resistors.  Do yours use tempcos? No, they do not.  Instead they use a diode that is part of the CV summation IC.  In practice this compensation is as good as the best of the circuits that use tempcos.  On paper, it’s better because it provides exact…

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