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Khamis, Februari 28, 2013

Electronic Combination Lock



This circuit is very basic to build. To open a the lock which is connected to the K1 Load you must press each momentary switch in the correct sequence






The sequence used in this circuit is S1,S2,S3,S4. If any of the other switches are pressed the circuit will reset and you will need to start over. Depending on how you wire the switches, you can use any 4 switch combination. - See more at: http://www.circuitdb.com/?p=382#sthash.lD2hpiUf.dpuf

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