BJ's 4046 oscillator

[Magnus Danielson]

Hi!

It just truck me that there is more to BJs 4046 oscillator.

>From the two buffer op-amps comes two waveforms that look like this


0 V -   ---   ---   ---   ---
     \  |  \  |  \  |  \  |  
      \ |   \ |   \ |   \ |  
       \|    \|    \|    \|  

0V   ---   ---   ---   ---   -
     |  \  |  \  |  \  |  \  |
     |   \ |   \ |   \ |   \ |
    \|    \|    \|    \|    \|

Adding them creates a saw, but subtracting them and you got yourself a
triangle. Using the saw+square trick you can have a sawtooth of the
same frequency as the triangle, and they are in phase. A deglitching
is assumed ofcourse.

Cheers,
Magnus