Divide by N - Page 3 - Electronic Circuits Projects Diagrams Free

ericgibbs · 20th June 2008, 12:18 PM

Quote:

Originally Posted by ArtemisGoldfish

A: I'm not building anything, just trying to show the OP what logic you'd need.B: What do you think of the revised one with a single counter and only 4000-series logic?

Hi AG,

Sorry AG, its a case of my typing finger being quicker than my eye...

I think the 4020 ripple counter glitches will cause misoperation of the 4013 F/F.

You may have to add some simple R/C filters on the outputs of the 4020.

chemelec · 21st June 2008, 01:50 PM

Quote:

Originally Posted by windozeuser

Hello board ^^, just recently someone got me involved in a project where they are making hydrogen gas for their car with electrolysis. They got me building all the electronics for it, and they are doing the mechanical aspect. I have everything about 80% done, expect for one part:

One sub-circuit requires a divide by N where 1000 input pulses = 1 output pulse. The circuit is using a CD4059, the problem is that the schematic only shows a block diagram for that part o.o.

The chip itself is considered obsolete, I managed to order 5 of them, but I can't figure out how to get it to divide by 1000?

If anyone can help me, I will greatly appreciate it. Also, a modern or different way of doing it is welcome, but as I said I have 5 of the CD4059's.

Thanks

Here are the Connections for the 4059 in that Hydrostar Circuit.
But your Totally Wasting your Time and Money on this.
The Hydrostar DOESN'T WORK.

http://www3.telus.net/chemelec/Proje...ostar-4059.GIF

**3v0** · 21st June 2008, 04:57 PM

Quote:

Originally Posted by Mikebits

Well, you make some good points, and I cannot deny the facts that even in the hardware world that coding is becoming the trend. Be that as it may, even with VHDL and other design languages, ASIC designers will still need a basic knowledge of digital design to properly implement their code.

I agree.

Quote:

But I still contend, that for a casual circuit builder that wants to make a simple divider circuit that should take a hour to construct, why in bleeps sake would you have them order $50. worth of supplies, weeks of reading just to divide a signal. In this case, simple is best, not to mention they learn a little about the hardware they are using.

Yes and No. I think that programing at some level has become (or soon will be) a required skill for anyone designing digital circuits. The programmer and parts should, maybe will, be on hand. It is realistic to expect these people to learn how to program rather then work around it.

But everyone has the right to do, what they want, their own way. As long as they are not working for a person who has final say.

Quote:

I hope you realize my tone is not aggressive, and I harbor no hard feelings, nor do I wish any in return, just voicing my thoughts in a free exchange of ideas

No problem.

Leftyretro · 21st June 2008, 05:30 PM

Valid points made in this recurring argument of programmable chips Vs standard logic functions, by both 'sides'.

The main thing is that the tech has made it possible to have a single 8 pin pic chip (picaxe 08M in this example SparkFun Electronics ) available for $4 that can be made to replace a large number of simple logic functions. The software to program the chip (in a simple basic language) is free from the manufacture and the 'programmer' function is simply two resistors and a comm link to a PC. Programming is a one time effort and not needed after the function is placed into the chip. If the function required requires more input or output pins then there are picaxe chips available in several size and cost points all affordable.

The small pic chips have kind of become this centuries equivalent to the famous 555 timer chip as far a wide range of applications and low costs.

There may always be special needs for dedicated logic function chips because of super high speed or non standard voltage levels but most application can utilize a modern pic chip very efficiently.

PS: I guess one argument against using pic chips would be a single source supplier rule. Many companies use to not utilize a chip unless there were second sources for the component. At least that was a design rule used a lot in the 60s and 70s. Now a days that rule seems to not be the rule a all!

Lefty

NEWBY08 · 21st June 2008, 06:50 PM

Im in the same boat with this problem, can anyone tell me the pin configuration to make the cd4059 divide by 1000, ive got the data sheet but im only new to this game!!!! please help

:

chemelec · 21st June 2008, 11:09 PM

Quote:

Originally Posted by NEWBY08

Im in the same boat with this problem, can anyone tell me the pin configuration to make the cd4059 divide by 1000, ive got the data sheet but im only new to this game!!!! please help

:

WHY DON'T YOU READ MY PREVIOUS POST?
AND CLICK ON THE LINK!

It Shows the Pin-Out Connections of the CD4059 to Divide by 1000.

"Not that it will Help You, as the HYDROSTAR is CRAP"!

JScaner · 1st August 2008, 02:17 PM

Hello Chemelec,

I saw you schematic drawing on the CD4059A pins hookup to 12 Volts and grounds to make N = 1000.

Now do you wire these pins connections perminantly ?

I heard people said it takes three clock cycles to program the chip, then removed the connections. Which way is the correct way ?

Thanks,

Johnny

chemelec · 1st August 2008, 02:31 PM

Quote:

Originally Posted by JScaner

Hello Chemelec,

I saw you schematic drawing on the CD4059A pins hookup to 12 Volts and grounds to make N = 1000.

Now do you wire these pins connections perminantly ?

I heard people said it takes three clock cycles to program the chip, then removed the connections. Which way is the correct way ?

Thanks,

Johnny

The Pinout I show is Correct for the 4059 to divide by 1000, and Yes you wire it permantly.

But WHY would you bother with this??
The "HYDROSTAR" CIRCUIT IS CRAP And DOESN'T WORK AS STATED.
Its a RIP-OFF!

If you bought the plans for this, Try to get your money back!

JScaner · 2nd August 2008, 03:25 AM

Thank you for the information on permanentpin hook up.

I guest I gave you the wrong name, the circuit that I am building is call REStar PWM.

Someone has made over ten modifications to the circuit, now is called restar pwm circuit... this circuit has both fuel cell and torroid coil circuit build into one.

http://www.restarpwm.com/

I have just completed building the circuit, fine tuning the frequency on the fuel cell to 20 Khz, but when i got to the coil circuit, it used CD4059A.

Measure the output frequency on the coil circuit and it read 20Khz, so the N = 1 right now.

I will hook these pins out, hopefully will get 20 hz out for the torroid coil.

Thanks for the information.

Johnny

davidbball13 · 2nd August 2008, 02:49 PM

i thought that a CD4018 was a divide by N

as shown here (you have to scroll down about half way)
http://www.doctronics.co.uk/beastie_zone.htm

chemelec · 2nd August 2008, 03:07 PM

Quote:

Originally Posted by davidbball13

i thought that a CD4018 was a divide by N

as shown here (you have to scroll down about half way)
http://www.doctronics.co.uk/beastie_zone.htm

The 4018 is a "Presettable" Divide by "N" Counter.
But it requires Multiple 4018's to divide if greater than 10.

The 4059 is a "Programmable" Divide by "N" Counter and can divide by almost anything with just a single chip.

Gary

davidbball13 · 3rd August 2008, 10:07 PM

Quote:

Originally Posted by chemelec

The 4018 is a "Presettable" Divide by "N" Counter.
But it requires Multiple 4018's to divide if greater than 10.

The 4059 is a "Programmable" Divide by "N" Counter and can divide by almost anything with just a single chip.

Gary

i knew there was somthing different about them. thanks for reading the fine print for me

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21st June 2008, 05:30 PM	(permalink)
Leftyretro	Valid points made in this recurring argument of programmable chips Vs standard logic functions, by both 'sides'. The main thing is that the tech has made it possible to have a single 8 pin pic chip (picaxe 08M in this example SparkFun Electronics ) available for $4 that can be made to replace a large number of simple logic functions. The software to program the chip (in a simple basic language) is free from the manufacture and the 'programmer' function is simply two resistors and a comm link to a PC. Programming is a one time effort and not needed after the function is placed into the chip. If the function required requires more input or output pins then there are picaxe chips available in several size and cost points all affordable. The small pic chips have kind of become this centuries equivalent to the famous 555 timer chip as far a wide range of applications and low costs. There may always be special needs for dedicated logic function chips because of super high speed or non standard voltage levels but most application can utilize a modern pic chip very efficiently. PS: I guess one argument against using pic chips would be a single source supplier rule. Many companies use to not utilize a chip unless there were second sources for the component. At least that was a design rule used a lot in the 60s and 70s. Now a days that rule seems to not be the rule a all! Lefty __________________ Measurement changes behavior Last edited by Leftyretro; 21st June 2008 at 05:42 PM.

21st June 2008, 06:50 PM	(permalink)
NEWBY08	Im in the same boat with this problem, can anyone tell me the pin configuration to make the cd4059 divide by 1000, ive got the data sheet but im only new to this game!!!! please help:

1st August 2008, 02:17 PM	(permalink)
JScaner	CD4059A Pins connections Hello Chemelec, I saw you schematic drawing on the CD4059A pins hookup to 12 Volts and grounds to make N = 1000. Now do you wire these pins connections perminantly ? I heard people said it takes three clock cycles to program the chip, then removed the connections. Which way is the correct way ? Thanks, Johnny

2nd August 2008, 03:25 AM	(permalink)
JScaner	Cd4059a Thank you for the information on permanentpin hook up. I guest I gave you the wrong name, the circuit that I am building is call REStar PWM. Someone has made over ten modifications to the circuit, now is called restar pwm circuit... this circuit has both fuel cell and torroid coil circuit build into one. http://www.restarpwm.com/ I have just completed building the circuit, fine tuning the frequency on the fuel cell to 20 Khz, but when i got to the coil circuit, it used CD4059A. Measure the output frequency on the coil circuit and it read 20Khz, so the N = 1 right now. I will hook these pins out, hopefully will get 20 hz out for the torroid coil. Thanks for the information. Johnny

2nd August 2008, 02:49 PM	(permalink)
davidbball13	i thought that a CD4018 was a divide by N as shown here (you have to scroll down about half way) http://www.doctronics.co.uk/beastie_zone.htm