High speed ASM-1 VCO question

[Christopher_List at Sonymusic.Com]

> I am experimenting with the ASM-1 VCO trying to get it run
> cleanly at about 100KHz.  I was wondering if you anybody
> could shed some light on some of design choices that were
> made in the circuit.  I understand how it works but need info
> on the more practical aspects.

Do you want it at 100kHz with 0 input CV?
I replaced the 2200pf cap with a 1000pf cap, and my VCO hit 120kHz with a
+15v input.

> Problems I have seen is excessive ringing
> (about 10% of signal) in the sawtooth at the end
> of retrace and an LM311 problem (see below).

My sawtooths ring a *tiny* bit, even with the normal components, but only a
little - can't even see it unless I zoom in a lot on the scope. I think
Gene's advice about trying it step by step is good.

- CList