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ljcox said:Here it is. It is based on Ron's level shifter and current mirror circuits.
I could not find any data for the NTE930.
Ron H said:Djpubba, if you are pursuing my circuit, I think you're wasting your time. I spent some time today comparing an RC multivibrator with the voltage-controlled current source multivibrator, and I'm convinced that Len is correct. The current is indeed proportional to voltage, but the pulse width is inversely proportional to current, so you wind up with a hyperbolic relationship between voltage and pulse width. Right now, I'm out of ideas.