Re: Timer circuit help

From: Terry Pinnell (terrypinDELETE_at_THESEdial.pipex.com)
Date: 11/21/04 

Date: Sun, 21 Nov 2004 08:41:50 +0000

"petrus bitbyter" <p.kralt@reducespamforchello.nl> wrote:

>Well,
>
>If it fulfils the OPs requirements the better but it does not give three or
>four pulses with a 50% dutycycle he asked for. You will get some pulses of
>unspecified length and a lot of digital appliances will react with
>unexpected actions. The solutions I have in mind produce three (or four) 6Hz
>pulses with a dutycycle of 50%, no more, no less. Which requires some more -
>and a little bit more complicated - electronics then the solution you
>suggested.

You may be right, but I think it largely depends on exactly what the
OP meant by "...the output will pulse 3 to 4 times with a 50% duty
cycle..." I noted that he didn't say "3 *or* 4...". So I've assumed
that, if there were 4 pulses, the 4th was allowed to be of unspecified
length. In fact, I'm not sure how else you could interpret that
wording?

So, Robo, let's hear from you! BTW, if you actually *meant* "3 or
4...", does that mean a switchable option? Or you haven't made your
mind up yet? 

-- 
Terry Pinnell
Hobbyist, West Sussex, UK

Relevant Pages

  • Re: Timer circuit help
    ... >>If it fulfils the OPs requirements the better but it does not give three or ... >>four pulses with a 50% dutycycle he asked for. ... So design something that does three, design something that does four, ...
    (sci.electronics.design)
  • Re: Timer circuit help
    ... > Seven chips? ... > Terry Pinnell ... four pulses with a 50% dutycycle he asked for. ... pulses with a dutycycle of 50%, no more, no less. ...
    (sci.electronics.design)
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