🚀 go-pugleaf

In article <1992Sep11.233617.12368@seanews.akita.com> finneyk@seanews.akita.com (Ken Finney) writes:
>From: finneyk@seanews.akita.com (Ken Finney)
>Subject: 120 HZ oscillator query
>Date: Fri, 11 Sep 1992 23:36:17 GMT
>
>I'm in need of an oscillator that puts out two square waves, 
>180 degrees out of phase, each one 60 Hz and 50% duty cycle.  
>My original idea was to use a MM5369 17 stage divider (with a
>7.15 MHz crystal it would generate a 120 Hz output) to drive
>a flip-flop to generate the two 60 Hz wave forms.  Unfortunately,
>the MM5369 doesn't produce a 50% duty cycle output.  So, does
>anyone know of a IC (or simple (ie: cheap) circuit) that is 
>designed to produce the signals I'm looking for?
> 
>Wave form A
>      |------|      |------|      |------|      |------|
>------|      |------|      |------|      |------|      |------
> 
>Wave form B
>------|      |------|      |------|      |------|
>      |------|      |------|      |------|      |------
> 
>Note: The "High" times of the two waveforms must not overlap,
>and it would be even nicer if they have a "break before make"
>characteristic.
> 
> 

No matter what the duty cycle is, when you send it through a FF, it becomes 
50%. As you know, FF's are edge sensitive, and Q; -Q, will give you the 
right signal.



Peace and Prosperity!
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