[sdiy] 3038 vco?

[Tom Arnold]

On Sun, Jan 25, 2004 at 11:38:25AM -0400, Shokwave wrote:
> 
> Just stumbled across:
> http://www.midwest-analog.com/diylvco.html
> 
> It looks interesting. Anyone built this before? Comments? Have the 3038's
> been replaced with something better over the years? It's an old chip.

Note the extensions he's done to make the chip run cooler.  Same trick he
uses to make the NE566 into a usefull device.

I havent built the 8038 circuit but I have built his 566 circuit and it
works as designed as has a nice low parts count and very wide responce.

If I remember correctly the 8038 has a pretty clean sinewave out so it may
be worth playing with, but there are a lot of simple VCO's out there worth
looking at too like the 4069 based ones and the 555 based ones.
( check the archives ).

Kinda depends what you're looking for in a VCO.

-- 
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 - Tom Arnold -       When I was small, I was in love,                  - 
 - Sysabend   -       In love with everything.                          -
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