Magnus freq doubler.

[Bjorn Julin]

Hi.

>Which irony... I used the frequency doubler as an inspiration to an >90 
>degree phase shifter for sawtooths, a version of that you will >find in 
>Jörgen Bergfors LFO section.
>
>Now, to fix this, change the comparators reference voltage, that >is... 
>have the pos input of U1A go into a trimmer...

Comparators!!! arrrhhh,,! What the hell.!, I have misintepeteted
your design intention, ofcourse it works when its a comparator function..

>Also, Jörgen skiped the diode, which is a smart move. The comparator >will 
>go rail-to-rail without the diode, so then the DC correction R3 >could be 
>skiped.

Yepp.

>So, you say I have made a saw-to-tri converter... hohoum...

Not anymore, since i "now" see that you actually drive the sawtoth
directly onto the neg input of the TL082. i had intepreteted it
as that a input resistor was missing!

Sorry my fault.

>Maybe time to breadboard this thing...

Haven't bread boarded yet, will now when its a comparator function.

BJ (going blind in the desperate shearch of a freq doubler)


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