5.333 Volt for Roland Filters

[Colin Fraser]

On Jun 14,  1:01pm, Erik The ViKing wrote:
> Subject: 5.333 Volt for Roland Filters
> Can anyone tell me this is a good idea for a 5.333 volt, as in 
Roland's
> 303-filter, power supply?????
> 
> A simple voltage divider connected to an opamp, followed by a voltage
> follower. The voltage divider itself could exist of one resistor and a 
pot
> to adjust the output-voltage for 5.333 volts.
> 
> Are there better ways of doing this???? And how critical is the 5.333 
volt?
> 
> Erik
>-- End of excerpt from Erik The ViKing

In the 303 the level of the 5.333 volt supply determines the scaling of 
the CV output - I had to adjust mine to give 1v/oct. There is also a 
width control for the internal osc.
I tend to use LM317 variable voltage regulators for odd voltages. 
Op-amps would probably do, but it depends on how much current is drawn. 
I don't know if an op-amp could power a whole 303..

BTW Did you get my mail about the Roland Service Notes ? - I got no 
reply.

Peace

Colin f