Source: http://www.zen22142.zen.co.uk
pankaj kumar 2013-04-12 13:45:38 nice .if someone can thing like this then they have maximum range for thinking....thanks [Reply] [Reply with quote] |
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Mukesh Bisht 2011-06-02 12:35:14 i Have made mark 4 Circuit for my Videocom D2H system, it works perfectly for 3 months, afterword it stop working, sometime works some suddenly, only for once then didn't. [Reply] [Reply with quote] |
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Sebastian 2011-04-17 23:17:22 Great thing, but I modified it a bit... Tip: Use 74F08 gates in serial between BC547 and 555 - this will improve sensitivity a bit... Also use 100nF caps near all ICs... [Reply] [Reply with quote] |
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