[sdiy] I've figured out the 40106, now where to go?

[Dave Kendall]

Hi Bob.

As well as the widely-used TL071/TL072/Tl074 op-amps which you probably 
already know about, another chip to maybe check out is the LM13700 dual 
OTA. There are other OTA chips out there that are of higher spec (and 
cost), but for many synth apps it is perfectly adequate. All sorts of 
things - LFOs, VCAs, VCFs, phasers and other fun circuits can be built 
with them.

FWIW, there is a very useful page on the MFOS website showing how you 
can build many useful logic circuits (if that interests you) using a 
40106.
http://www.musicfromouterspace.com/analogsynth/mmlogic.html

just my 2 pennies worth.... :-)

cheers,
Dave





On Oct 21, 2011, at 21:14, Bob K wrote:

> Hi everyone,
>
> First off, thank for the responses a few weeks ago regarding my
> question about what types of chips to pick up for people new to
> electronics.
>
> I've been playing with the 40106, the TLC555 and the LM556 and am
> quite happy with the way things are going.
>
> Because of Beavis Audio's website, I have a four 4-oscillator noise 
> machine.
>
>
> Sooo... the next question is.... now where should I go regarding ICs?
>
> I was reading around online about Thomas Henry's "The VCO Chip
> Cookbook" but I can't find anywhere online to purchase it.
>
> Is this book still available?
>
> Better yet, is this book current to what's available to purchase from
> supply stores?
>
>
> I know these are vague questions, but I'm still just starting.
>
> I know there's a shit-ton to learn and would just like to know where I
> should be going?
>
> Should I stick with the three chips above for a while, or move around
> into learning as much as I can about new things?
>
> Too many questions, I know.  Sorry about that.
>
>
> I'm just happy because it's Friday and the girlfriend is in LA for the
> weekend so that means I can turn the dining room table into a
> workbench for three days.  :)
>
> -Bob
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