Saw Frequency doubler and Phase Shifter

[Magnus Danielson]

From: "Bjorn Julin" <bnillson at hotmail.com>
Subject: Re: Saw Frequency doubler and Phase Shifter
Date: Tue, 19 Sep 2000 00:01:01 GMT

> Hi
> 
> >One should know that the resistors is intended to be scaled for -5V -> + 5V
> >sawtooth and +/- 15V of op-amp supply voltage (and thus assumed output 
> >swing).
> 
> 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.

Cheers,
Magnus