[sdiy] 4053 triple SPDT for VCO

[Grant Richter]

My guess is the Moog Voyager used 4066s powered from +/- 5 volts.

There was probably enough non-linearity near the supply rails for Dr.  
Moog to change the scaling to 0.9 volts per octave.

On May 4, 2006, at 4:50 AM, René Schmitz wrote:

> Hi Aaron and Chad,
>
>> Will the 4053 do the trick, or is there another favored SPDT we  
>> should be looking into?
>
> There might be nicer switches, but these will do.
>
>> Also, I'm wondering about the supply... if we run the 4053 or 4066  
>> or whatever off of referenced solid +/- 7.5 V sources, and then  
>> give it the _same_ sources as input, will it pass them happily? Or  
>> does the supply need to be a wee bit above what's being passed  
>> through?
>
> There is internally not much else but a MOSFET to +-7.5V, much like  
> an inverter or any other CMOS gates it will go almost to the rails.
> You don't need to worry about the simultaneous conduction of both  
> halves of the switch here. (The situation is again much like for an  
> inverter.)
>
> Cheers,
>  René
>
> -- 
> uzs159 at uni-bonn.de
> http://www.uni-bonn.de/~uzs159
>