vc wave select

[tomg]

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> From: tomg <vco at mindspring.com>
> To: ijfritz at earthlink.net
> Subject: Re: vc wave select
> Date: Friday, March 26, 1999 9:26 PM
> 
> > tomg --
> > Can you tell us why you use the 3915 rather than the 3914?
> > Thanks.
> >   Ian
> 
> Sure....I have a drawer full of 3915s...;-)
> 
> The 3915 is a logarithmic version of the 3914 (linear)
> dot/bar display driver. The  3915 is scaled to give a -3db 
> interval between outputs. 
> 
> The 3914 uses a string of 1K resistors as a voltage divider for 
> linear scaling. This even scaling would allow for more precision
> when using a pot for input. 
> 
> However when used like this the difference between the two is
> almost nothing, so I used the 3915s and will save the 3914s
> for something where it matters more.
> 
> -tg
> 
> 
> 
>