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| Electronic Projects Design/Ideas/Reviews Are you building an electronic project or want to? Maybe you need some assistance? Come and submit your electronic questions here and let our experienced members find a solution. |
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| I have a design challenge, i need to build an alarm with at least 4 zones, a waiting time before activation and has to run max with a 9 volts battery eficiently (no CMOS aparently), any help will be apriciated. | |
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| No one here will do Your work for You but................... CMOS is exactly what you need as it has a negligible quiescent current drain. The over all design needs a few things. 1) Sensors, what are you trying to detect and where? 2) a timer , for entry/exit delay. 3) a code pad or key switch for activation/deactivation. 4) logic that makes the whole thing work. 5) maybe optional... A real world output that is controlled by the logic. ( I.E. a relay or optocoupler to activate a siren,lights or dialer) | |
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| what about this? http://www.mitedu.freeserve.co.uk/Ci...arm/5zalm.html now, for the CMOS, well, i think they are the best option in your case if you want low power. i don't really see a GOOD way to get around them. | |
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