[sdiy] Suboctave using 4013; triggering problem

[harry]

I'd try just using some small pF cap on the output of the LM311... (no
resistor)

Try positive feedback on the LM311...

Make sure pins 5&6 of the LM311 are tied together as the data sheets
say in fine print.

Make sure that LM311 is decoupled very well near the chip.

Try another brand 4013

H^) harry

Scott Bernardi wrote:

> There was a thread a while back about sine wave suboctaves. I'm
> attempting to build one, and I'm having real trouble with intermittent
> triggering of my 4013 D flip-flop. Right now I'm just breadboarding.
> I've got an LM311 output (4.7K to +5v) driving the clock input, and the
> R and S inputs grounded. Originally I just had the Qbar output tied
> directly to the D input, but also tried an RC filter (2.2K and 220pF).
> I'm still getting intermittent triggering.
> Any suggestions?
>
> --
> Scott Bernardi
> sbernardi at home.net