Ideal VCO for mass production

[jorgen.bergfors at idg.se]

>>you should try to demostrate why your designs are better. 

>That's exactly what I'm tired of doing. Why do I have to defend everything I >do? 

Because it is made public. You don't  have to defend it of course, but you have to accept that it can be critiqued and rewieved by anybody. That's the name of the game. If you don't want it scrutinized, don't make it public. 

>But one more time......
>The vco-4b's front-end is almost exactly the same as
>Gene's asm-1. The core is based on the prodigy vcos.
>The prodigy was the second best selling moog of all
>time right next to the minimoog. The reason for this
>is the great way the oscillators sound. They put out
>a true tri-wave that's easily shaped into a wonderful
>sine. I have yet to see a tri-converter without a glitch. The tri-output >alone makes it worth building.
>But the magic happens when you sync them up.
>Ask anybody with a prodigy.

Now we're talking.
But isn't the output impedance of the square wave output a trifle high with a 470k series resistor? Does the Prodigy have it?
Has anybody actually built it from your schematic? And got it working as is on the schematic? Anybody out there on the list?

What about actual measuements?
How fast is the reset time? The tracking deviation? The temperature stability?
Questions, questions...

I'm still not convinced that it has advantages compared to the ASM-1 VCO. The cleverness of the ASM-1 VCO is not in the front end, by the way. It is mostly in the Franco compensation that does away with the high scale adjustment.
Also the fact that the ASM-1 is successfully built by so many people speaks volumes for it.


/Jorgen