Hi Guys: Maybe some member has this issue and could copy fig.1 schematic for me or sell me the Electronic Design Magazine for reasonable price. I am looking for the article Ultimate continuity tester hides many tricks up it's sleeve by Louis Vlemincq. I was able to get article on Electronic Design website without loging into it but the fig1 and fig2 url are no longer in server. I experiment with continuity testers and have never saw one that works with 1 1/2 volt power source using two transistors as non-inverting amplifier. I tryed emailing Louis but he's in Belgium and the email failed when I sent it a few times. Here's email I tryed two different ways louis.vlemincq@belgacom.be and louis.vlemincq@owa.belgacom.be both failed. I can not get engineer and Electronic Design does not have it in library, so I though an afterdawn member might have it. I could not find any issues any where on the net. Best regards, Ralph555
This link may or may not help you. You will have to create an account to look at pics on forum. somebody here may have the diagram your looking for https://forum.allaboutcircuits.com/threads/project-not-working.108440/