Re: V/F converter: Lm331

"Supreme Lord of All Assholes, Ha!" <re_colossale@xxxxxxxx> wrote in message
news:1146408332.673440.259890@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi, I'm trying to work out a very simple linear voltage-controller
oscillator, ranging from a few Hz to circa a thousand Hz (audio range)
and working with 0-5V input tensions, and after some advice I set my
aim on the LM331, which is said to be a good voltage-to-frequency
converter.
Anyway, I can't get much out of it.
The big problem is that the data*** provides lots of nice application
notes, ranging from coffee machines to DIY Space Shuttles, but does not
explain me how to actually embed the 331 in my circuit.
Especially, I can't understand well enough how the external components
have to be sized and placed and how to calculate the output frequency
in relation to the input voltage.
Has anybody got some experience with this toy?

Thank you in advance and sorry for my poor english.

--

Me :-)


I don't know which data*** you're looking at, but the one I downloaded from
national.com has some great examples of a voltage-frequency converter, and
includes the design equations. Specifically what are you having trouble with?
You might post a copy of your schematic here (ASCII art) or on
alt.binaries.schematics.electronic (PDF/GIF/JPG images). You'll have a much
better chance of getting good advice if we know what your circuit is.
--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

Some days you're the dog, some days the hydrant.


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