AW: [Re: thermal tips re expo converters:]

[>>>marjan<<<]

> They have an expo converter, but they only use the expo CV input either for
> small CV's
> (Tuning, Detuning), or for rather uncritical larger CVs such as ENV
> modulation. Therefore
> there is no need for a tempco resistor. A dual transistor for 1st order
> compensation is enough.
> For the critical stuff, they change the expo converter's reference current
> (Where you would
> normally find a linear FM input on expo VCOs). 

In MS-50 there's 1k tempco on base as there's v/oct input in that place
together with tune and mod amount, otherwise vco is indentical to 20's
and it has hz/v input also.
There's tip on some ms webpage to use ms-20 with v/oct by patching it
in ext mod in and triming it with pot,but I guess it won't be very
stable?


marjan