<?xml-stylesheet type="text/xsl" href="https://community.element14.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>ARMP Input Amplifier</title><link>/technologies/open-source-hardware/b/blog/posts/armp-input-amplifier</link><description>This is my first stab at the input amplifier for the Archaeology Resistance Meter Project.It&amp;#39;s tagged as armp OverviewThe schematic has (almost) no component values but I shall talk about them in the text.All two terminal components are in 0...</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: ARMP Input Amplifier</title><link>https://community.element14.com/technologies/open-source-hardware/b/blog/posts/armp-input-amplifier</link><pubDate>Fri, 07 Aug 2020 21:59:36 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:05360db9-04ab-4e65-84b8-25caf598da0b</guid><dc:creator>shabaz</dc:creator><slash:comments>1</slash:comments><description>&lt;p&gt;Hi Michael,&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Super-logical, easy-to-follow explanation and design : )&lt;/p&gt;&lt;p&gt;It makes sense, and such a design can be easily experimented with, for anyone who wanted to try new tweaks or new uses. I was wondering (might need another couple of relays!) would it be worth to switch in attenuated version of the source signal? It could be used to calibrate away the phase shift in the circuitry. On the other hand, maybe that&amp;#39;s better with jumpers for initial calibration, and then they could be removed.&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=9658&amp;AppID=18&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>RE: ARMP Input Amplifier</title><link>https://community.element14.com/technologies/open-source-hardware/b/blog/posts/armp-input-amplifier</link><pubDate>Wed, 29 Jul 2020 18:53:29 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:05360db9-04ab-4e65-84b8-25caf598da0b</guid><dc:creator>DAB</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;I have been following the discussions and I am very interested to see what you come up with.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;DAB&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=9658&amp;AppID=18&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>RE: ARMP Input Amplifier</title><link>https://community.element14.com/technologies/open-source-hardware/b/blog/posts/armp-input-amplifier</link><pubDate>Wed, 29 Jul 2020 09:55:56 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:05360db9-04ab-4e65-84b8-25caf598da0b</guid><dc:creator>davemartin</dc:creator><slash:comments>1</slash:comments><description>&lt;p&gt;Thanks Michael, there&amp;#39;s a lot of work in there already! - thank you.&lt;br /&gt;&lt;br /&gt;Could I just ask please - even if zoomed-in on the bulletin board, the schematic isn&amp;#39;t that easy to read, gets quite pixelated. Is there any chance you could attach the image in a form so that it can be viewed in the original resolution please?&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Thanks again&lt;/p&gt;&lt;p&gt;Dave&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=9658&amp;AppID=18&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item></channel></rss>