[sdiy] 9400 Frequency to Voltage IC?

[Delia & Gavin]

be careful of that book, there's a lot of really bad designs in it (like the
resistor divider based power supply and the sequencer that puts oute
negative steps instead of positive ones).  But there are some good ones.  A
company called micro chip still makes the 9400.  I think they're in Canada. 
If you have trouble finding them let me know and I'll poke around a bit
more.
good luck!
G.
----------
>From: Ordeish at aol.com
>To: synth-diy at dropmix.xs4all.nl
>Subject: [sdiy] 9400 Frequency to Voltage IC?
>Date: Sun, Oct 5, 2003, 10:30 AM
>

> Hi all. A friend has just given me the great present of "music Synthesizer 
>A mnual of design and construction"
>
> I love it! Anyway, in it there is a design for a frequency to voltage 
>converter. It uses a 9400 F/V IC. I cant seem to find it. Is there another 
>part that is the same thing?
> Also if anyone is familiar with this book, there are alot of designs that 
>go on different voltages. I was hoping to use 12v for things. How easy is 
>it to change things to make them work on a different voltage than in the book?
>
>
>thanks
>
>edward