Frequency Divider

[EngIntoHW]

Hey,

How can you design a frequency divider which divides the input frequency by 3?

It relates to digital systems, So I'd like to use Counters and DFFs.

Thanks for any help.

 

[ericgibbs]

Hey,

How can you design a frequency divider which divides the input frequency by 3?

It relates to digital systems, So I'd like to use Counters and DFFs.

Thanks for any help.

hi,
Which counters do you have on the bench.?

 

[EngIntoHW]

Hey Eric,

I got only DFFs, no counters.

It would be better doing it without using any counters, but I wasn't sure if it's possible.

 

[crutschow]

A Google search came up with this.

 

[EngIntoHW]

Hi,

I actually found it on google, however there're no DFFs there.

 

[Mikebits]

Well you can make a JK out of a D.
**broken link removed**

 

[RCinFLA]

There are two configurations possible. One uses half cycle, one uses full cycles. Must use 50-50% input duty cycle signal and half cycle circuit to get 50-50% duty cycle on output. The full cycle divider gives a 67-33% output duty cycle. If you are using it to drive an RF mixer you want the 50-50% duty cycle.

 

[MikeMl]

Here is an old posting. It actually generates 2/3 of the input frequency, but you could just take the 1/3 frequency at S1 or S2.

 

[krytenrobot]

use a cd4017 decade counter.

https://www.electro-tech-online.com/custompdfs/2010/08/4017.pdf