creating a 50hz clock

[tom314]

I would like to create a 50hz ttl clock, but I am unsure of the best way to do it. I was thinking of using a 555 timer, but it can be difficult to get a 50% duty cyle using the 555 timers. I was then thinking about a crystal oscillator, but it looks like they are for much higher frequencies. Are there any other options, or do I just have to make due with the 555 timer? Thanks for any help.

 

[DaTT]

Highly Technical?

 

[pray4mojo]

Excuse me?

 

[tom314]

Yeah, I posted there first but I was hoping for a quickier reply so I thought I would try OT.

 

[So]

Originally posted by: tom314
I would like to create a 50hz ttl clock, but I am unsure of the best way to do it. I was thinking of using a 555 timer, but it can be difficult to get a 50% duty cyle using the 555 timers. I was then thinking about a crystal oscillator, but it looks like they are for much higher frequencies. Are there any other options, or do I just have to make due with the 555 timer? Thanks for any help.

How accurate are you looking for? In my analog electronics class this semester, a couple people built a 555 timer circuit. They got fairly poor accuracy using an RC circuit. Honestly, I got kinda lost on the oscillator chapter (and PSPICE is bad with oscillators) so I can't be of that much help.

 

[tom314]

I'm not really sure how accurate the design needs to be right now. I just know that it is difficult to build a 555 timer circuit that is precise. So I thought I would see if anyone knew of any other options. Thanks for the replies btw.

 

[Mallow]

<austin powers voice> neurd alert! </end voice>

 

[Jmman]

Originally posted by: Mallow
<austin powers voice> neurd alert! </end voice>

Not really, just EE........

 

[dighn]

maybe you can get a suitable crystal and divide the frequency?

2nd link in google: http://www.interq.or.jp/japan/se-inoue/e_clock4.htm

 

[tom314]

I think that might just work, thank you very much.

 

[Mallow]

Originally posted by: Jmman

Originally posted by: Mallow
<austin powers voice> neurd alert! </end voice>

Not really, just EE........

haha, you act like you proved me wrong but you just proved me right!

 

[djpolstee]

I've got a EE friend. Yea, he's currently working on a real time time machine for his senior design. We're currently establishing some sort of display that will provide news of what has happened in the world while a traveler is in the machine. We're going with a CNN style format.

 

[So]

Originally posted by: djpolstee
I've got a EE friend. Yea, he's currently working on a real time time machine for his senior design. We're currently establishing some sort of display that will provide news of what has happened in the world while a traveler is in the machine. We're going with a CNN style format.

I take iy your friend goes to Crazy Go Nuts University.