modified 11 years ago

Full-Wave Octaver - or just abs X

01:07:37

Help! I'm not sure if i implemented this correctly, or if this is doing what it's supposed to. Got the ideea from http://www.lynx.bc.ca/~jc/superFullWave.html and i just love the details there are there. 

The output signal does, indeed, look like |x| but i'm not sure that i set up the opamps correctly - in the schematic it's powered by -9v.

On another note the signal is a lot of fun to play around with when playing with the bottom 2 resistors :)

published 11 years ago

DIYSi

6 years ago

You have to add an offset reference to the positive in of the second opamp, in this manner you haven't the DC shift at the beginning of the simulation (because the capacitor at the output) , to add this you have to connect a v/2 voltage divider. Anyway an opamp hate drive capacitive load a good idea was to add a 100 ohm resistor between the output and the capacitor

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