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From: Fred Bloggs
User-Agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0
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Subject: Re: Electronics Newbie Needs Help With A Timer Delay Circuit...
Date: Wed, 02 Oct 2002 14:49:58 GMT
NNTP-Posting-Date: Wed, 02 Oct 2002 07:49:58 PDT
Organization: EarthLink Inc. -- http://www.EarthLink.net
> Thanks for all the replies guys.
> I'm sorry for not clearly stating the in's and out's of what I was
> thinking. (it was late...blahblahblah..)
> Anyways, There will be a podium with many buttons.
> Only one button will actually be part of circuit, the rest will just
> be decoration.
> When the patron presses the pushbutton I want it to start a 10 second
> delay circuit that after the 10 second period turns on light. The
> light doesnt neccesarily have to be an AC powered bulb, and I agree
> that this would be to much of a saftey issue if nothing else. After a
> certain amount of time (25 seconds?) I want the light to go out and
> the circuit to reset itself ready for the next person to press it. The
> switch needs to be momentary action or else it would require the
> viewer to reset the switch each time. Wouldn't it?
> At this point I am totally open to any changes that would make it
> easier to construct, run, or maintain. And certainly make is safer as
> well. Hopefully this explains what I'm thinking, but if not just ask.
> Thanks again as I appreciate the knowledge and advice
It may be more in keeping with your "instant gratification" theme to use
a single pushbutton and punish the impatient user by adding 10 second
increments for each button press within the delay period, and continue
this up to some reasonable maximum like 40 seconds and then start over.
It is perfectly safe to use small line power like a 40W bulb, but the
drawback is that you will need to be near an outlet. A flashing
ultra-bright LED array will have the same effect.
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