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 help with a double beam laser alarm

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aravindj36 Posted - Jan 16 2010 : 11:31:45 AM
PLEASE HELP ME I HAVE ATTACHED A CIRCUIT IN WHICH I NEED A LOAD TO ACTIVATE ONLY IF BOTH THE BEAMS ARE CUT AND IN THE CIRCUIT ONLY ONE LDR LDR IS THERE HOW CAN I USE TWO LDRS WITH THE OUTPUT TRIGGERING ONLY WHEN BOTH THE LDRS ARE IN DARK STATE PLEASE IT IS URGENT AND COULD YOU SUGGEST A DESIGN FOR THE ABOVE PURPOSE THAT IS THE RELAY ACTIVATES ONLY WHEN THE LIGHT TO THE TWO LDRS ARE BLOCKED AND DOESNT WHEN ANYONE OF THEM GOES DARK
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aravindj36 Posted - Feb 26 2010 : 04:49:27 AM
Sorry guys its my stupid cousin who posted the thread by logging in with my name







Note:never take laxatives and sleeping pills together
pebe Posted - Jan 30 2010 : 11:23:41 AM
quote:
Originally posted by Aaron Cake

Remember, there are languages besides English in the world and many of them don't have upper/lower case...

But they all have punctuation!
Aaron Cake Posted - Jan 30 2010 : 10:47:35 AM
Remember, there are languages besides English in the world and many of them don't have upper/lower case.

But there is not attached circuit...
codingplanet Posted - Jan 17 2010 : 4:25:31 PM
I'm not even going to bother reading that.
boron Posted - Jan 17 2010 : 2:59:05 PM
Alrighty, so first things first:

1) There is no reason to shout at us. I can read lower case letters juuuust as well as upper case ones.
2) You didn't attach anything.

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