AVR-Chat

On Thu, 26 May 2005 11:49:45 +1000 you wrote:

>Ralph Hilton wrote:
>>>>Connect it between 2 output pins and switch them alternately. That effectively
>>>>doubles the voltage.
>>>
>>>How does that work?
>> 
>> If the 2 pins are alternately pulled up then the peak to peak voltage is 10.
>
>Not unless you "store" the voltage somehow. ie. you may need some 
>diodes and capacitors. At any one time the voltage measured across the 
>two pins is always no more than Vcc.
>
>Do you do advertisements for amplifiers?

Using pins 1 & 2:

Pin 1 = 0, pin2 = 5v
then
Pin 1 = 5v, pin2 = 0

Relative to pin1, pin2 goes from +5 volt to - 5 volt which is 10 volts peak to
peak.

--
Ralph Hilton
http://www.ralphhilton.org
C-Meter: http://www.cmeter.org
FZAOINT http://www.fzaoint.net