detect a signal overlap on a C.R.O

Discussion in 'General Electronics Chat' started by itsmyturn, Feb 19, 2005.

  1. itsmyturn

    Thread Starter Member

    Feb 15, 2005
    how can i know whether a signal has overlapped on other on a C.R.O.

    for eg. i want to know whether a circle has overlapped on a semicircle on a C.R.O

    actually my circuit will make a circle move continuously on the C.R.O screen . and a user will be moving a semicircle thru his control keys horizontally and can i know when these two touch each other ???
  2. beenthere

    Retired Moderator

    Apr 20, 2004

    Without any more deatails than those given, you'll have to rely on the old eyeball.

    Electronic methods might include monitoring X/Y deflection voltages to look for similar projections, and even looking at beam current. It changes when passing over a glowing area - that's how the old memory tubes worked.