[sdiy] VCO reference voltages

[cheater cheater]

On Sat, Apr 17, 2010 at 02:23, David G. Dixon <dixon at interchange.ubc.ca> wrote:
>> > Just my own experience.  Every time I've ever measured my rails, they've
>> > always been within 1 mV of the last time I measured them.
>>
>> Yes, but I think you might be one of the few people who understand
>> it's quite useful to have a good PSU :-)
>
> Aha!  And that means that those who don't understand the importance of
> having a good PSU will never appreciate the subtle benefits of having
> regulated rails on their tuning pots!  Ergo, there's no problem!
>
> (My logical kung fu is too strong!)

But the ones who can appreciate it do expect it :^)

>> > It's just what I started out doing, and I've seen no reason to change
>> it.
>>
>> Gotcha. Inertia is as good a reason to do things as any :-)
>
> It's not (all) inertia.  In most cases I'm just trying to learn by looking
> at other people's circuits, and I don't necessarily know enough about it to
> question some of the things I see.

That's exactly what I had meant with inertia. Not laziness. Rather
than that, the fact that there's no reason to change things unless
there's a reason. When reading good authors there's usually a good
reason they opted for one out of two seemingly equivalent options that
were available at the time.

D.