tag:blogger.com,1999:blog-8627289870548070461.post362900139938834571..comments2023-09-30T19:36:04.838+07:00Comments on Electronics Enthusiast | DIY | 3D Printer | Mechanical Keyboards: DIY Blue Ring TesterRudzhttp://www.blogger.com/profile/16295958527198563135noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-8627289870548070461.post-43831559188674024742016-11-11T14:20:34.023+07:002016-11-11T14:20:34.023+07:00The circuit diagram you have shown is for the upgr...The circuit diagram you have shown is for the upgraded ring tester using 4069 IC instead of LM393. Do you know how I could get the pcb design of the upgraded ring tester. <br />Bala.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8627289870548070461.post-38789010236102195612016-03-21T17:18:27.585+07:002016-03-21T17:18:27.585+07:00Sorry i mean LM393.. Thank you :)Sorry i mean LM393.. Thank you :)Rudzhttps://www.blogger.com/profile/16295958527198563135noreply@blogger.comtag:blogger.com,1999:blog-8627289870548070461.post-70801068084413470092016-03-21T17:17:43.108+07:002016-03-21T17:17:43.108+07:00I build it with 2 ic which are LM394 dual comparat...I build it with 2 ic which are LM394 dual comparator and CD4015 dual 4bit shift register.. :)Rudzhttps://www.blogger.com/profile/16295958527198563135noreply@blogger.comtag:blogger.com,1999:blog-8627289870548070461.post-41250089024027991332016-03-20T04:45:14.107+07:002016-03-20T04:45:14.107+07:00I'd love to build one of these, as I have a re...I'd love to build one of these, as I have a real need for one, could you tell me what chips you used.<br />PaulAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-8627289870548070461.post-87695750419050190512015-02-26T13:00:22.003+07:002015-02-26T13:00:22.003+07:00Hi Hermann, This DIY Ring tester don't have fl...Hi Hermann, This DIY Ring tester don't have flickering red led like Anatek tester does. it just lit as usual led. Mine was same like your one too. sorry for very late reply...Rudzhttps://www.blogger.com/profile/16295958527198563135noreply@blogger.comtag:blogger.com,1999:blog-8627289870548070461.post-23474882731879251852015-01-08T01:12:54.772+07:002015-01-08T01:12:54.772+07:00Hi, so great to see another enthusiast with the sa...Hi, so great to see another enthusiast with the same idea!<br /><br />I have just finished building my DIY tester and it seems to work. However, I don't get the one flickering red LED when the device is not connected to any coil. The original Anatek tester does that.<br />By reducing C8 to 100pF I got one solid red LED at least. Studying the clock and reset signals to the 4015 chip with a scope, I cannot imagine how a flickering could possibly work.<br /><br />How does your DIY tester behave?Alpengeisthttps://www.blogger.com/profile/01348018296057576427noreply@blogger.com