stable clock timer..for a different LED clock

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k7elp60
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Re: stable clock timer..for a different LED clock

Post by k7elp60 » Thu Nov 06, 2003 4:16 pm

Well the 4024 is a 7 stage binary counter. Assuming the input of 50 to 60 cps is going to pin 1. The output on pin 4 is a divide by 64.
With 60 hz clock frequency the output would be
0.9375 hz. The clock won't be very accurate.
But the time base should be fine

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dacflyer
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Re: stable clock timer..for a different LED clock

Post by dacflyer » Thu Nov 06, 2003 4:33 pm

if not good enough is there something better? different pin out or better to have different chip all together??<p>not too famillar with this chip or how it works..maybe the 7 stages can be better set up? or?

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dacflyer
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Re: stable clock timer..for a different LED clock

Post by dacflyer » Tue Nov 11, 2003 4:47 pm

if pin 4 is a divide by 64..what are the other pins divide by? i'd like to learn more about how this works...<p>still look for a simple time base that will be accurate if this is not best to use...

k7elp60
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Location: Ivins, UT
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Re: stable clock timer..for a different LED clock

Post by k7elp60 » Thu Nov 13, 2003 8:53 pm

The 4024 is strictly a binary divider,and not suitable for dividing 50 or 60hz down to 1hz for a clock.
With a frequency as an input of pin 1 the outputs are as follows:
pin 12 input/2
pin 11 input/4
pin 9 input/8
pin 4 input/16
pin 5 input/32
pin 4 input/64
pin 3 input/128
From your previous posts you are concerned about
power failures, so you probably do not want a
line freqency clock. Your best bet is a crystal controlled clock.<p>If you give me a way to contact you, I just happen to have a clock module that will do what you want. It is assembled and tested. The PCB is about 2" square and works on 5 to 18VDC. It has outputs of 60hz,10hz and 1hz.
Ned <p> :( :( :(

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