Saw Frequency doubler and Phase Shifter

[Bjorn Julin]

Hi.

> > It will do all the way down to + - 5 volt if cmos op amps
> > are used. It worked nice on my bread board at - +12 volt.
>
>Ah, but I refered to that the fact that for a "perfect mix" the comparators 
> >swing should be mixed so that it has the same amplitude jump as the 
>original >sawtooth as they come out of the output mix. The mixing I set up 
>was based on >the +/- 15V op-amp swing and +/- 5V sawtooth swing 
>assumptions. The ratio 3:1 >should be kept for the intended operation, 
>rescaling would be necessary >otherwise.

Yes i know, all i was saying was that it works nice
all the way down to +-5 volt "including" rescaling
of the resistors.The message was that a Cmos often swings
wey close to the rails so for 0 to+5 volt or +-5 volt designs
bipolar has its limits if one want perfect +-5 volt wave shapes.

BJ
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