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2 articles written by andre72

Author: andre72

About: I’ m just an elevator mechanic, which learned basic electronics at a job training school in Italy. Due to my job experience and due to the web I improved my skills in relay logic, electronic circuits and plc programming, but I have to learn a lot of things.

Website: http://circuit4hobby.altervista.org

electronic key circuit schematic

Electronic Key Circuit

andre72 - 04/02/2013

Based on CD4017 and logic gates this electronic circuit switches on a relay if you press four keys [...]
momentary switch circuit schematic

Momentary Switch with 555

andre72 - 03/22/2013

Based on NE555 this circuit turns on and off the IC output by a momentary switch. In other [...]