Alarm using gates

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#1 21663841 24 Sep 2012 23:22

Leblanc Meneses Leblanc Meneses

Anonymous

Post #1
21663841 24 Sep 2012 23:22

I have eight possible indicator lights in a remote control panel.
The indicator lights are 110 VAC I would like to use a circuit using OR NOR or NAND gates to drive a becon light , letting me know that one f the lights came on.
Thanks
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#2 21663842 25 Sep 2012 10:05

Richard Comerford Richard Comerford

Anonymous

Post #2
21663842 25 Sep 2012 10:05

You can build this using 7 OR gates, as shown. Use a rectifier and series resistance to pick off the appropriate voltage from each lamp circuit needed to drive the OR gates to a logic 1 input. Or use a photodiode to sense the light from the lamp and drive the gates.
#3 21663843 25 Sep 2012 14:08

Leblanc Meneses Leblanc Meneses

Anonymous

Post #3
21663843 25 Sep 2012 14:08

Thank you for helping. But I m a maint. tech, in electronics I can follow prints. But I will see what I can do with a Data sheet and info you gave me.
Thanks again
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