25-08-2017, 09:32 PM
DIGITAL CODE LOCK
DIGITAL CODE LOCK.pptx (Size: 491.21 KB / Downloads: 35)
INTRODUCTION
A Digital Code lock is a simple but effective
Code lock circuit that has an automatic reset facility
There are two types of digital code lock:
Analog locking system
Digital locking system
Salient features
Use of 11 switches, which suggests that there is a microprocessor inside.
Elimination of power amplifier transistor to energize the relay.
Low cost and small PCB size.
APPLICATION
Widely used at :
Household power system
Bank lockers
Home security
Offices
Hotels
Markets
Also in suitcase box etc..
Advantages
Simple in construction
Economical
Low weight
Password can be set as per the demand
Easy to operate
Disadvantages
Time consuming
Can be used only for low rated locking system
Fault cannot be easily detected