<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-size: 13px;color: rgb(0, 0, 0);font-family: arial, sans-serif;">So what are the frequencies, of both the generator and the filter cutoffs?<br><br><blockquote style="padding-left: 5px; margin-left: 0px; border-left: #0000ff 2px solid; font-weight: normal; font-style: normal; text-decoration: none; font-size: 10pt; font-family: arial,sans-serif; color: black;">-----Original Message-----
<br>From: Elain Klopke <functionofform@gmail.com>
<br>Sent: Apr 4, 2017 1:31 PM
<br>To: "Byron G. Jacquot" <thescum@surfree.com>, chromatest@azburners.org
<br>Cc: SYNTH DIY <synth-diy@synth-diy.org>
<br>Subject: Re: [sdiy] breadboard woes
<br><br><div dir="ltr">I'm measuring in DC.<div><br></div><div>Measuring in AC gives me 2.03 volts at the source pin, before and after all the resistors.</div><div><br></div><div>connecting the resistor to the positive supply and measuring in DC gives me a reading of 5.06 V as if it was a plain bit of wire.</div><div><br></div><div>this is baffling because I checked the resistor with the resistance function again and it measures fine.... I even switched to the Hz function and measured the output square waves from the chip and got the expected frequencies.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 4, 2017 at 2:00 PM, Byron G. Jacquot <span dir="ltr"><<a target="_blank" href="mailto:thescum@surfree.com">thescum@surfree.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:13px;color:rgb(0,0,0);font-family:arial,sans-serif">Are you measuring AC or DC volts?<div><br></div><div>2.4VDC might be an OK reading for a 5VAC square wave, depending on how your meter integrates it.<span class=""><br><div><br></div><div><blockquote style="padding-left:5px;margin-left:0px;border-left:#0000ff 2px solid;font-weight:normal;font-style:normal;text-decoration:none;font-size:10pt;font-family:arial,sans-serif;color:black">-----Original Message-----
<br>From: Elain Klopke <u></u>
<br>Sent: Apr 4, 2017 12:43 PM
<br>To: *SYNTH DIY <u></u>
<br>Subject: [sdiy] breadboard woes
<br><br><div dir="ltr">So I was trying to get a reading on my breadboard to see how much voltage was lost between the input of three passive low pass filters in series and the output. <div><br></div><div>My measurements between ground and:</div><div>positive supply: 5.06 V</div><div>Output from chip: 2.4 V (was expecting 5 V because digital square wave)<br></div><div>junction of first and second resistor: 2.4 V</div><div>junction between second and third resistor: 2.4 V</div><div>after third resistor: 2.4 V ....</div><div><br></div><div>All resistors measured at 5.07 kOhms. I'm not sure what's going on. Is my breadboard messed up somehow or am I missing something fundamental about electronics?</div></div>
<u></u><u></u></blockquote></div></span></div></div></div>
<br>______________________________<wbr>_________________<br>
Synth-diy mailing list<br>
<a target="_blank" href="mailto:Synth-diy@synth-diy.org">Synth-diy@synth-diy.org</a><br>
<a target="_blank" href="http://synth-diy.org/mailman/listinfo/synth-diy" rel="noreferrer">http://synth-diy.org/mailman/<wbr>listinfo/synth-diy</a><br>
<br></blockquote></div><br></div>
</synth-diy@synth-diy.org></thescum@surfree.com></functionofform@gmail.com></blockquote></div></body></html>