Walsh circuit now up

[WeAreAs1 at aol.com]

Hello Tony,

Very impressive, this Walsh VCO of yours.  I have a question for you:

In the description at your web page, you wrote:

<< The coefficient inputs are voltages that can be varied 
from 0V to +5V. This is the limit imposed by the 4066 
analogue switches. If you used the more expensive DG 
series, you would have more flexibility here, but no money! >>

Why do the 4066's impose a 5 volt limit?  Can't they be powered by up to +15 
volts or +/- 7.5 volts?  Or are you using 74HC4066's?

Also, do you have any ideas about implementing Hard Sync on your high 
frequency triangle oscillator?

Michael Bacich