Long delay IC

S

SS

Guest
Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.

Thx

SQ
 
"SS" <saleem.qamar@verizon.net> wrote in message
news:4bVde.598$Ri.408@trnddc08...
I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.
Click to expand...
There are plenty of 8 pin microcontrollers that can do this.

If you don't have microcontroller experience (and don't want to learn now),
just use a 555 connected to a big counter such as a 4013; cascade as needed.

Use a crystal oscillator if you need decent accuracy...
 
"Joel Kolstad" <JKolstad71HatesSpam@yahoo.com> wrote in message
news:117ga8k4eii7697@corp.supernews.com...
"SS" <saleem.qamar@verizon.net> wrote in message
news:4bVde.598$Ri.408@trnddc08...
I would like to make a 4 -5 day timer. Is there an IC or a circuit
that I
can use
to make this circuit.

There are plenty of 8 pin microcontrollers that can do this.

If you don't have microcontroller experience (and don't want to learn
now),
just use a 555 connected to a big counter such as a 4013; cascade as
needed.

Use a crystal oscillator if you need decent accuracy...
Click to expand...
Or use a 4060 CMOS chip as was mentioned here recently. It has a
built-in oscillator, and can divide by 2^14?? Check it out. This is
the HCT version.
http://www.semiconductors.philips.com/pip/74HC4060N.html

It looks like 2^14 is 16384, so if it's oscillating at 1Hz, that would
be a bit over 4.5 hours max. You could cascade two of these and get
many days' delay yet the Fosc would be well above 1Hz and component
values would be reasonable.

4013? Big? Hrmm.

You've attempted (but failed miserably) to crosspost this to several
bogus newsgroups.
 
On Wed, 04 May 2005 01:02:56 +0000, SS wrote:

Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.

Thx

SQ
Click to expand...
Hi,

Try the MC14536B. Farnell have them in DIP for around $2.50, and datasheet
on line. This has an oscillator (RC if required), and programable
divider from 2^0 to 2^24, with with a 1HZ oscillator will give approx 200
days delay.

David
 
On Wed, 04 May 2005 01:02:56 GMT, "SS" <saleem.qamar@verizon.net>
wrote:

Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.
Click to expand...
---
How precise do you want the timer to be, and what do you want to
happen when the timer times out?

--
John Fields
Professional Circuit Designer
 
SS wrote:
Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.

Thx

SQ
---------------
Click to expand...
Way too easy. Daisy chain a few CD4040's with a crystal clock.
What? You don't know how? Do we have to show you how to do
EVERYTHING???? Take the crystal out of a watch.

-Steve
--
-Steve Walz rstevew@armory.com ftp://ftp.armory.com/pub/user/rstevew
Electronics Site!! 1000's of Files and Dirs!! With Schematics Galore!!
http://www.armory.com/~rstevew or http://www.armory.com/~rstevew/Public
 
"SS" <saleem.qamar@verizon.net> wrote in news:4bVde.598$Ri.408@trnddc08:

Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.

Thx

SQ
Click to expand...
Try a couple of MM5369N long duration timers in series (see my article in
73 Magazine Sept 1979 if you can find a copy).

cheers,
chuck...
 
On Sun, 08 May 2005 08:01:28 GMT, CHUCK <RES1ARZB@VERIZON.NET> wrote:

"SS" <saleem.qamar@verizon.net> wrote in news:4bVde.598$Ri.408@trnddc08:

Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit that I
can use
to make this circuit.

Thx

SQ



Try a couple of MM5369N long duration timers in series (see my article in
73 Magazine Sept 1979 if you can find a copy).

---
Click to expand...
Unfortunately, that part was dicontinued in 1997. Plus, the eventual
divide-by was a mask programmed option, so using something like a
single 4060 with the oscillator running at a period of about 52.7s
would be much more practical.

Then, of course, there's the ever-present ľC solution...

--
John Fields
Professional Circuit Designer
 
"CHUCK" <RES1ARZB@VERIZON.NET> wrote in message
news:Xns9650A74E7711chuckpattenverizonne@199.45.49.11...
"SS" <saleem.qamar@verizon.net> wrote in
news:4bVde.598$Ri.408@trnddc08:

Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit
that I
can use
to make this circuit.

Thx
SQ

Try a couple of MM5369N long duration timers in series (see my article
in
73 Magazine Sept 1979 if you can find a copy).
Click to expand...
If you can even _get_ those custom programmed ICs nowadays..

IIRC that's the one radio scrap used to sell, and you needed to use a
3.58 MHz color xtal with it. It put out 60 Hz, or was it 1 Hz? In any
case, it's as rare as hens' teeth nowadays.

The NG reader pitched a fit with those non-existent newsgroups such as
news.electronics.*. When are you going to stop trying to post to
non-existent newsgroups. Duh.

cheers,
chuck...
Click to expand...
 
"Watson A.Name - \"Watt Sun, the Dark Remover\"" wrote:
"CHUCK" <RES1ARZB@VERIZON.NET> wrote in message
news:Xns9650A74E7711chuckpattenverizonne@199.45.49.11...
"SS" <saleem.qamar@verizon.net> wrote in
news:4bVde.598$Ri.408@trnddc08:

Hi,

I would like to make a 4 -5 day timer. Is there an IC or a circuit
that I
can use
to make this circuit.

Thx
SQ

Try a couple of MM5369N long duration timers in series (see my article
in
73 Magazine Sept 1979 if you can find a copy).

If you can even _get_ those custom programmed ICs nowadays..

IIRC that's the one radio scrap used to sell, and you needed to use a
3.58 MHz color xtal with it. It put out 60 Hz, or was it 1 Hz? In any
case, it's as rare as hens' teeth nowadays.

The NG reader pitched a fit with those non-existent newsgroups such as
news.electronics.*. When are you going to stop trying to post to
non-existent newsgroups. Duh.

cheers,
chuck...
Click to expand...
There were several versions. The 60 Hz and 100 Hz were the most
common.
--
Former professional electron wrangler.

Michael A. Terrell
Central Florida
 
Watson A.Name - "Watt Sun, the Dark Remover" wrote:

If you can even _get_ those custom programmed ICs nowadays..

IIRC that's the one radio scrap used to sell, and you needed to use a
3.58 MHz color xtal with it. It put out 60 Hz, or was it 1 Hz? In any
case, it's as rare as hens' teeth nowadays.
Click to expand...

Of course, using a PIC12F675, you can do the same thing, fit in an 8 pin package
with a 3 line program in C.

Because it is a custom job, you can take a color burst xtal as your drive source,
and put out anything you want for the timed output....60Hz, 1 pps, 1 pp century...

Power draw is miniscule, like the original.

-Chuck

Standard disclaimer applies, you need some knowledge, and about $50 worth of
programming hardware to make this work.
 
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