Code lockers are used for security purposes and it is of many types based on their complexity and level of security they provide. Here we are going to see building of simple code locker circuit using decade counter IC CD4017….
Read more
Electronic Locks are highly useful to protect our possession and it was widely used in all places. The demand for Electronic locks is high since it offer high security and easy to handle rather than the mechanical locks. Most of…
Read more
This is the circuit diagram of a simple electronic combination lock using IC LS 7220.This circuit uses a relay for controlling any type of device when the combinations of four digits are pressed.Keypads are used as input here to enter…
Read more
This electronic circuit is one of the simplest code lock circuit one can make easily in their home.This circuit uses one transistor a relay and a few passive components in it.The logic of this circuit is also very simple.Even this…
Read more