<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Yah I was going to say the sure way to protect your 3.3v mcu is to power your op amp with no more than 3.3v<br><br><div dir="ltr">Benjamin Tremblay</div><div dir="ltr"><br><blockquote type="cite">On Dec 4, 2020, at 2:13 PM, Tom Wiltshire <tom@electricdruid.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">Hi David,<div class=""><br class=""></div><div class="">It will, but if it’s for a microcontroller input, it doesn’t matter. It’s simpler to flip the ADC value in the firmware than add another op-amp to every CV input.</div><div class=""><br class=""></div><div class="">So, yes..but no!</div><div class=""><br class=""></div><div class="">Tom</div><div class=""><br class=""><div class="">
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<div><br class=""><blockquote type="cite" class=""><div class="">On 4 Dec 2020, at 19:01, David G Dixon <<a href="mailto:dixon@mail.ubc.ca" class="">dixon@mail.ubc.ca</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: small; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: -webkit-left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">It seems to me that your circuit will invert the CV, which is not what you want.</span></div></blockquote></div><br class=""></div><span>_______________________________________________</span><br><span>Synth-diy mailing list</span><br><span>Synth-diy@synth-diy.org</span><br><span>http://synth-diy.org/mailman/listinfo/synth-diy</span><br><span>Selling or trading? Use marketplace@synth-diy.org</span><br></div></blockquote></body></html>