/challenges-projects/project14/555timermadness/b/blog/posts/jumbo-blue-555Intro This project started with designing a discrete bipolar transistor design that directly implements the internal circuitry of a classic NE555. After capturing the schematic I noticed other people had already built such projects, so I redesigned .en-USTelligent Community 12https://community.element14.com/challenges-projects/project14/555timermadness/b/blog/posts/jumbo-blue-555Tue, 18 Oct 2022 14:32:48 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:750ab364-0654-4a9a-9ba8-f50c62f41509robogary2<p>Very informative analysis, thanks.&nbsp;</p> <p>Your desk is still very neat and clean.:-)</p> <p>I always wished for access to a non inverted driver output.</p> <p>The pot on your circuit board looks unusual to me. Altho is is very small, the tabs are arranged for edge flange soldering rather than pins, and has a metal case. Is the pot rescued from some other gear ?&nbsp;</p><img src="https://community.element14.com/aggbug?PostID=24586&AppID=388&AppType=Weblog&ContentType=0" width="1" height="1">