This is the circuit diagram of a simple electronic combination lock using IC LS 7220.This circuit can be used to activate a relay for controlling (on & off) any device when a preset combination of 4 digits are pressed.The circuit can be operated from 5V to 12V.
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Selasa, 14 Mei 2013
Posted by kumit on 05.15
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This is the circuit diagram of a simple electronic combination lock using IC LS 7220.This circuit can be used to activate a relay for controlling (on & off) any device when a preset combination of 4 digits are pressed.The circuit can be operated from 5V to 12V.
Sabtu, 30 Maret 2013
Posted by kumit on 04.00
with No comments so far
Mechanical type of relays can be pretty inefficient in applications which require highly smooth, very swift and clean switching. The proposed circuit of an SSR can be built at home and used in places which require truly sophisticated load handling.A solid state relay circuit with in built zero crossing detector is described in this article. The circuit is very easy to understand and build yet
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