Re: 555 50% duty cycle

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Bob Bozarth by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jbdetails-at-prodigy-dot-net>

    I'd suggest looking for free samples from one of the semiconductor
manufacturers. I tend to scrounge(sp?) most if not all of my parts, and I
consider overnight priority Fedex samples "scrounging"!

    Bob Bozarth
    Experimenter
    Scrounger



----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, December 21, 2001 11:29 PM
Subject: Re: 555 50% duty cycle


> Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<youngs-at-konnections-dot-net>
>
> Matt,
>
> To guarantee 50% duty cycle, just add a divide by two counter and run the
> 555 at twice the frequency.  You can get CMOS or TTL counters for less
than
> a dollar.
> --Steve
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Friday, December 21, 2001 7:47 PM
> Subject: Re: 555 50% duty cycle
>
>
> > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Fucian-at-aol-dot-com>
> >
> > In a message dated 12/21/01 8:47:53 PM Eastern Standard Time,
> > tesla-at-pupman-dot-com writes:
> >
> > << Hi Matt,
> >
> >  With the origninal 555 non-CMOS timer see page 10 of:
> >
> >  http://hot-streamer-dot-com/temp/LM555.pdf
> >
> >  Cheers,
> >
> >     Terry
> >
> >
> >
> >  At 07:59 PM 12/2 >>
> > Yea, thats what i need.Thanks.I have a Q.In the second formula their
looks
> to
> > be a cursive L.--------[(RaRb)/(Ra+Rb)]cL?n-----Is that an L?What does
> that
> > mean?CLN?
> > Does anyone know of a calculator for 50%duty cycle?
> >
> > Thanks,
> > Matt
> >
> >
>
>
>
>
>