<div dir="ltr">oh, and by the way, the voltage needs to pulse on and off a couple of times per second, just like the LED and beeper. However, it might make sense to have them alternate timing to smooth out the duty cycle.<div><br></div><div>db</div><img src="http://t.sidekickopen23.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4f8fjW1q7dh42BFXSHW5vg7Q82zlZNzW69xng71k1H6H0?si=4964982235594752&pi=6d15af56-f5fe-44f2-93a8-3434dc6cb449" style="display:none!important" height="1" width="1"></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 27, 2015 at 7:47 PM, Dave Buster <span dir="ltr"><<a href="mailto:dave.buster@gmail.com" target="_blank">dave.buster@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Thanks, Pete.</div><div><br></div>To answer your question, I'd like to get up to about 80 volts, but at VERY low current (just a few ma). The goal is to create an electric field, not really drive anything.<div><br></div><div>One final request- the circuit board and battery need to fit in a PVC pipe. (~ 1 inch inside diameter)</div><div><br></div><div>Once I get this thing built, I'll be happy to give a presentation on a very crazy idea.</div><div><br></div><div>db</div></div><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Tue, Oct 27, 2015 at 7:09 PM, Pete Soper via TriEmbed <span dir="ltr"><<a href="mailto:triembed@triembed.org" target="_blank">triembed@triembed.org</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><span class="">
This is exactly the right list. How high a voltage for how long (and
how often) and at what current?<br>
<br>
-Pete<div><div><br>
<br>
<div>On 10/27/2015 06:55 PM, Dave Buster via
TriEmbed wrote:<br>
</div>
</div></div></span><blockquote type="cite"><span class=""><div><div>
<div dir="ltr">
<div>Hi- </div>
<div>I'm a long-time lurker on this email, but I'm not active.</div>
<div><br>
</div>
<div>It's been many, many years since I did Industrial
engineering at NC State, and I've mostly been doing data
communications and cyber security since then. In other
words.... I'm no longer hands on. I don't even know how to
solder any more.</div>
<div><br>
</div>
<div>sigh. This is embarrassing..</div>
<div><br>
</div>
<div>Now I have a need to design a build a simple analog circuit
for a hobby of mine, and I'm getting stumped. I'm wondering
if someone has some time to give me a few pointers and/or help
me with the design.</div>
<div><br>
</div>
<div>The battery-powered circuit will be very simple. I need to
flash an LED a couple of times per second (I got that working
with a 555 timer), then I need to send beeps to a little piezo
speaker (I'm still working on that), and finally, I need to
pulse a high-voltage/low-current DC signal about twice per
second. I'm thinking of using a max1771 DC-DC converter for
that. ...and I'm in over my head.</div>
<div><br>
</div>
<div>I won't be able to make it to the November meeting, but
would it be possible to get someone to spare an hour some
other evening to discuss this?</div>
<div><br>
</div>
<div>Anyone want to volunteer to help a life-long learner?</div>
<div><br>
</div>
<div>Here is an email account I don't use very much, but I'll be
checking it:</div>
<div><br>
</div>
<div><a href="mailto:dave@tritonsharksignal.com" target="_blank">dave@tritonsharksignal.com</a></div>
<div><br>
</div>
<div>Also, if this is not appropriate for this email thread, my
apologies.</div>
<div><br>
</div>
<div>thanks!</div>
<div><br>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div>
<div dir="ltr">
<div><font face="Verdana"><span>Dave Buster</span></font></div>
<div><font face="Verdana"><span><br>
</span></font></div>
<div><font face="Verdana"><span>KK4ELT on 2 meters</span></font></div>
<div><font face="Verdana"><span></span></font> </div>
<div><font face="Verdana"><span>Never look at the trombones,
it only encourages them.</span><br>
<span><b><font color="#0000cc">R<a href="http://t.sidekickopen23.com/e1t/c/5/f18dQhb0S7lC8dDMPbW2n0x6l2B9nMJW7t5XX45vMtjYVQZgwH64R1y4W8r4TLx56dPn8f5RTxgR02?t=http%3A%2F%2Fwww.brainyquote.com%2Fquotes%2Fauthors%2Fr%2Frichard_wagner.html&si=4964982235594752&pi=6f98b148-9f74-482e-d75c-f87f6847e43c" target="_blank">i</a>chard Strauss</font></b></span></font><br>
<br>
<br>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
</div></div></span><span class=""><pre>_______________________________________________
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TriEmbed web site: <a href="http://TriEmbed.org" target="_blank">http://TriEmbed.org</a>
</pre>
</span></blockquote>
<br>
</div><span class="">
<br>_______________________________________________<br>
Triangle, NC Embedded Computing mailing list<br>
<a href="mailto:TriEmbed@triembed.org" target="_blank">TriEmbed@triembed.org</a><br>
<a href="http://mail.triembed.org/mailman/listinfo/triembed_triembed.org" rel="noreferrer" target="_blank">http://mail.triembed.org/mailman/listinfo/triembed_triembed.org</a><br>
TriEmbed web site: <a href="http://TriEmbed.org" rel="noreferrer" target="_blank">http://TriEmbed.org</a><br>
<br></span></blockquote></div><br><br clear="all"><span class=""><div><br></div>-- <br><div><div dir="ltr"><div><font face="Verdana"><span>Dave Buster</span></font></div><div><font face="Verdana"><span><br></span></font></div><div><font face="Verdana"><span>KK4ELT on 2 meters</span></font></div>
<div><font face="Verdana"><span></span></font> </div>
<div><font face="Verdana"><span>Never look at the trombones, it only encourages them.</span><br><span><b><font color="#0000cc">R<a href="http://t.sidekickopen23.com/e1t/c/5/f18dQhb0S7lC8dDMPbW2n0x6l2B9nMJW7t5XX45vMtjYVQZgwH64R1y4W8r4TLx56dPn8f5RTxgR02?t=http%3A%2F%2Fwww.brainyquote.com%2Fquotes%2Fauthors%2Fr%2Frichard_wagner.html&si=4964982235594752&pi=fce7dc5b-3c23-4cc7-8dbc-3881892046cb" target="_blank">i</a>chard Strauss</font></b></span></font><br><br><br></div></div></div>
</span></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><font face="Verdana"><span>Dave Buster</span></font></div><div><font face="Verdana"><span><br></span></font></div><div><font face="Verdana"><span>KK4ELT on 2 meters</span></font></div>
<div><font face="Verdana"><span></span></font> </div>
<div><font face="Verdana"><span>Never look at the trombones, it only encourages them.</span><br><span><b><font color="#0000cc">R<a href="http://t.sidekickopen23.com/e1t/c/5/f18dQhb0S7lC8dDMPbW2n0x6l2B9nMJW7t5XX45vMtjYVQZgwH64R1y4W8r4TLx56dPn8f5RTxgR02?t=http%3A%2F%2Fwww.brainyquote.com%2Fquotes%2Fauthors%2Fr%2Frichard_wagner.html&si=4964982235594752&pi=6d15af56-f5fe-44f2-93a8-3434dc6cb449" target="_blank">i</a>chard Strauss</font></b></span></font><br><br><br></div></div></div>
</div>