[sdiy] 4069 vco gives v+ noise? - one last question

[Karl Ekdahl]

Thansk to everyone who helped me with this problem, i
temporarily changed my transformer to a 22v center tap
that i found, so now it's working again!

I'm going to build a whole new powersupply based upon
the information i've got from all of you so i might as
well ask one last question that i've been thinking
about; What the heck is separate grounds? I've read
everywhere that i should have one "analog" and one
"digital" ground. Could anyone please give me a short
definition on how this works?

thanks again

/Karl

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