Re: Anotehr Basic Q. re: a circuit

On Tue, 05 Aug 2008 16:15:01 -0500, Kris Krieger <me@xxxxxxxxxx>
wrote:

I almost never Google past posts - I spend way too much time at the
computer as it is <LOL!> No, seriously, though, thanks for your note -
and yup, usenet is definitely a grab-bag, although I *have* gotten some
really good answers over the past several weeks from several people,
which *has* helped me understand a lot more than I had, and also has
given me much better search terms to use :) - OTOH I was honestly
serious as to asking whether this is the right group for the question I
was asking. I've tried to be up-front re: the depth and extent of my
lack of knowledge, and the fact that I'm trying to teach myself, but
maybe that didn't come through - if there is a better venue, I'd
appreciate knowing that.

I've seent hat "circle" a fe wtimes on circuit drawings, tho', and I
havent' seen it explained in the resurces I have currently, so it always
confuses me, since it looks to me like it means "add more stuff here".

---
It represents a connection, so that's right.

The upper one is where the supply voltage is connected to the circuit
and the lower one is where the dimming signal is connected.

The dimming signal can be either 0V to 3.3VDC or a 3.3V high signal
with a frequency higher than 15kHz and a variable duty cycle.

JF
.

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