There are a variety of phosphors used in oscilloscope tubes. Here's a rundown:
P1 is the original green. It's long lasting. P4 is white, faster. It's not common in smaller tubes, as it was used primarily for TV sets. P7 is a radar phosphor with a fast blue glow and a yellow afterglow. P11 is fast and blue. P12 is orange. I'm in the process of getting my scope clock back into production, with a laser cut case. I'm using a Teensy to make the circuitry simple, yet capable of lovely curved fonts as my original scope clock from 20 years ago, that set the bar. On Fri, May 29, 2020, 8:35 PM 'John Rehwinkel' via neonixie-l < [email protected]> wrote: > > Standard colo(u)rs I have seen are Green (P1, P31), white (P4), blue (P7, > P11) and orange (P12, P19) > > https://en.m.wikipedia.org/wiki/Phosphor > > There are some exotics (like red) that allegedly exist, but I’ve never > found a CRT with a red phosphor (yet...:). > > > There are some purple ones out there like P16 flying spot scanner tubes. > I've seen red ones in flood beam and projection TV tubes. > > - John > > > -- > 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/C8DBD7AF-F748-4D6E-8C02-6EB48EFA4162%40mac.com > <https://groups.google.com/d/msgid/neonixie-l/C8DBD7AF-F748-4D6E-8C02-6EB48EFA4162%40mac.com?utm_medium=email&utm_source=footer> > . > -- 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/CAPbqtvc23eg5s0y0cHTSgt%2BzC%3DENC0NNcwtC3W_wn5AvMfhLjQ%40mail.gmail.com.
