Hi, I just bought an old SCM Marchant 414 with a 14 digit ZM1200 Pandicon as the display element!
The Pandicon contains Neon and looks just fine however the previous owner had disconnected the power supply from the main board and the power supply has been repaired extensively. All of the transistors and one UJT 2N2646 and one SCR TIC125M, there are five MJE340 and a bunch of small TO92 transistors that have also been replaced. Before I switch on the power supply I wonder if anyone here has a schematic diagram of the calculator, especially the power supply? A quick Googling didn't turn up any circuit diagrams and just a handful of websites with information but none with the Pandicon, all had separate Nixies instead. The voltages from the power supply are printed on the circuit board but since the power supply directly rectifies the mains voltage I'd really like to know how it works before just turning it on. /Martin -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f1fd03f9-ed10-4263-a833-1e8cd5ed223b%40googlegroups.com.
