I just received two more. That makes three otherwise junk-bound old scopes converted to a cool item and two board to continue experiments. It must be a couple years ago I asked the software author for a special version to slow down the display drawing rate via a numerical command and received it (thank you!), and am still working on doing the clock with an electromagnetic display. As many know, they are slow and require power amplifiers with current feedback to drive the inductive load of the deflection coil, but there is nothing like a TV set or computer monitor conversion because of the nice large screen. The black and white TV sets are the easiest to work with because of no convergence issues, but at this point I can see that I have to rewind the yoke to lower its inductance to 1mH or less for the speed. That is the state of affairs. Volume 22 of the MIT radiation laboratory series (displays) shows how to wind a yoke of various types, perhaps a lost art. “the secret life of XY monitors” online provides amplifier schematics. So, not it is not done yet but I am getting closer and of course learning far more than I had ever expected. Please keep supplying these boards!
↧