[sdiy] synth uses for LM3909

[Harry Bissell Jr]

unless you wanted to duplicate the "Electric Trombone"
that was in the data (application) notes  

<bfg>

H^) harry



--- "Roy J. Tellason" <rtellason at blazenet.net> wrote:

> On Thursday 13 January 2005 04:57 pm, anthony wrote:
> 
> > I used to have an LM3909 LED flasher that I played
> with when I was a kid. I
> > was lamenting the fact that I seem to have lost it
> somewhere over the years
> > and wondered what synth uses it might have had. So
> I thought I'd just check
> > and see if they had them at Mouser. It's like
> $11.50. That seems like a lot
> > for such a simple little chip.
> 
> That's absurd.  Perhaps it's no longer being made?
> 
> > So should I just cherish fond memories and say
> goodbye to the LM3909 and 
> > just stick with 555's (and 556's and 558's)?
> 
> The biggest advantage to using one of those chips is
> that you could get a 
> flashing LED that would run off a _single_ 1.5V
> cell.  Other than that there 
> was nothing all that special about them.  I saw a
> web page somewhere where 
> somebody was trying to create an equivalent circuit,
>  but I wasn't real sure 
> why they were bothering to do that...
> 
> 
> 
> 
> 
> 
>