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sawtooth generator - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


NOFX30
Post subject: sawtooth generator
Unread postPosted: Mon Mar 14, 2005 5:54 pm
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Joined: Mon Mar 14, 2005 5:51 pm
Posts: 4
I was wondering if there was anyone who knew how to make a very high frequency sawtooth generator, or possibly very clean high frequecny pulses to discharge a cap for sawtooth generation. everything i have tried is unaccecptable at the frequencies i am interested in.


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Guest
Post subject:
Unread postPosted: Mon Mar 14, 2005 9:15 pm

Um, how are we going to help you if you are having trouble at "the frequencies i am interested in" if you don't tell us what those frequencies are?


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Guest
Post subject:
Unread postPosted: Tue Mar 15, 2005 9:03 am

in the megahertz range


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Ming
Post subject:
Unread postPosted: Tue Mar 15, 2005 10:03 am
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Lieutenant
User avatar

Joined: Tue Jan 13, 2004 8:42 am
Posts: 4
That's still not very specific. What's so hard about naming your frequency range? 1-10 MHz? 100-500 MHz? It makes a difference.

Here's a Maxim MAX038 waveform generator circuit for up to 20 MHz.
http://www.maxim-ic.com/appnotes.cfm/appnote_number/650
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1257

This circuit probably goes beyond 50 MHz
http://www.elecdesign.com/Articles/Inde ... cleID=6198

The best thing to do probably is call some of the IC vendors and talk to an applications engineer. They'll know right away if they have a solution, and the advice is free.


Ming







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