<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hey Tony, thanks :)</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">You are right about the design. This is just what I had working for years in my 4U system. i reduced the output resistor from 1k to 100r because i was getting a voltage drop, probably due to the 1m resistor in the input, lol. I'm getting a lot of excellent feedback from my EE friends though, so I might have to make a followup video showing possible improvements.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">I deadbugged it for a few reasons: </div><div id="AppleMailSignature">To make the video interesting - not a lot of people know about deadbugging, so this is a cool project to introduce the concept. </div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">A stripboard would have required some way to mount it to the panel. Deadbugging seemed easier and more compact.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">i love the sound of the words "Deadbug Buffer" together :)</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Again, thanks for your feedback!</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">All the best</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Q</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature"><br><br>Sent from my iPad</div><div><br>On Mar 21, 2017, at 10:33 PM, Tony K <<a href="mailto:weplar@gmail.com">weplar@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Hi Quincas, </div><div><br></div><div>I got a hoot out of the sped up panel construction, reminding me of my sampled drum machine project build the same way, onto thick single- clad pc stock. Quick and cheap. I painted mine a cream colour however, not as sexy as the red you got there Sharpie graphics, I used an old Dymo labeler not the thermal one !</div><div><br></div><div>That's not going to be fun if that op-amp goes, as you say, but hey it got the job done. The engineers here are better equipped to comment on the design, but I am not sure the high value resistor is necessary as the input to the J-FET op-amp is low offset high-impedance, and on the output 1 K might be more common that 100 ohm. This is all off the top of my head, I would verify this say in Jung's IC Op- Amp Cookbook , or a good book, text. Of course it works as designed so the rest is all academic. </div><div><br></div><div>Only pet peeve, is you call the power rails "energizing" pins, but it sounds charming , so it's a minor quibble.</div><div><br></div><div>Question: Why deadbug when proto boards are so handy? </div><div><br></div><div>Nice video and soundtrack btw,</div><div><br></div><div>Tony K</div><div><br>On Mar 21, 2017, at 7:28 AM, Quincas Moreira <<a href="mailto:quincas@gmail.com">quincas@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Hey beloveds, new video up on Synth DIY Guy! Fun times deadbugging and making a home made panel for a buffered mult. As always, please let me know if I said anything stupid :)</div><div><a href="https://youtu.be/X4c9jcEzaBE">https://youtu.be/X4c9jcEzaBE</a></div><div><br></div><div>Cheers</div><div><br></div><div>Q<br><br><div>Sent from my iPad</div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Synth-diy mailing list</span><br><span><a href="mailto:Synth-diy@synth-diy.org">Synth-diy@synth-diy.org</a></span><br><span><a href="http://synth-diy.org/mailman/listinfo/synth-diy">http://synth-diy.org/mailman/listinfo/synth-diy</a></span><br></div></blockquote></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Synth-diy mailing list</span><br><span><a href="mailto:Synth-diy@synth-diy.org">Synth-diy@synth-diy.org</a></span><br><span><a href="http://synth-diy.org/mailman/listinfo/synth-diy">http://synth-diy.org/mailman/listinfo/synth-diy</a></span><br></div></blockquote></body></html>