"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by Owain, January 29, 2012, 10:21:34 AM
Quote from: rherber1 on June 26, 2018, 10:26:08 AMdoing the task with semiconductor devices makes it very complicated when just 2 relays and a diode make it easy to do
Quote from: Owain on July 01, 2018, 08:19:45 AMThe first part of the Maplin Digi-Tel electronic exchange from the 1980s is in this online version of the Project Book 04. It uses the 45100 crosspoint IC.https://www.americanradiohistory.com/UK/Mapelin/Maplin-Project-Book-04.pdf
Quote from: rherber1 on July 01, 2018, 11:44:52 PMIt is quite a sophisticated project and it wouldn't be cheap to build - even assuming all the parts were available.