[sdiy] clock Divider

[Scott]

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Scott
Gravenhorst
Sent: Friday, July 06, 2007 10:49 AM
To: synth-diy at dropmix.xs4all.nl
Subject: RE: [sdiy] clock Divider

There is also a good deal of information in many of the datasheets for
these
parts.  Sometimes the circuit examples and test circuits need only
trivial
modification to get them incorporated into a larger design.


-- ScottG


----------------


I do understand the datasheets, and what the IC's are doing.  Where I
get lost is in the "trivial modifications".    
Im not clear on buffers and whatever else is needed to get the signal up
to the level I need, or to shape the pulse into what I need.  I know
it's basic stuff.  In fact, a lot of schematics I've seen don't even
give values for resistors or specific IC's that are used in the input
and output stages, because I guess I'm just supposed to know how to do
that part... 

An example is something as simple as a voltage divider.  I understand
the theory behind them, but then how do you choose what resistance to
use?  As long as the ratio between the two resisters is the same, it
will work, but then how do you choose a value to start with?  (I don't
mean to start yet another conversation.. this is a rhetorical
question... but I guess you could answer if you really wanted)

You guys amaze me every day I read this list.  What's crazy is that I'm
like the nerdy smartest guy out of all my friends, and when I read
here... I must have the lowest IQ out of the bunch! (and last time I
took an IQ test it told me I was a genius... must have been wrong)

Another problem is that I took a 2 year break from this hobby (bought
and rehabbed a house and some other things)  so a lot of what I learned
back then has been lost.