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How do I set a video as a picture?

Is there a simple circuit that will remove the color content from a composite video output of a miniature color security camera. I want to turn a color camera picture into black and white picture without adjusting the color t.v set or camera.

  • Answer:

    Assuming we are talking about U.S. T.V. standards, you might be able to get away with using simple LC band-stop filter (aka notch filter) tuned to the NTSC color subcarrier at 3.579545 MHz. You can find a filter circuit primer here: http://www.allaboutcircuits.com/vol_2/chpt_8/6.html

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