Analogue systems

i think for this relatonship you'd need 1 osc and 1 freq shifter..
i can do this w an rs95 + rs240 but not positive how to achieve it otherwise. 

can do the opposite w a divider (1st freq is F and the second is F/3) but a 
shifter does both, up AND down.  

also, i think a freq multiplier will do what you need but you may be limited to 
what waveforms you can use.  like dividers, they often like squarewaves best.

anyone??

-psm


--- In analogue_systems@yahoogroups.com, Arnauld Michelizza <am@z...> 
wrote:
> 
> I'm just looking for a trick to tune 2 VCO so that their frequencies are
> multiples (for example, the 1st freq is F and the 2nd is 3*F).
> Any idea ?
> 
> --
> Arnauld Michelizza