: The password based circuit breaker control system is a system that access only specified password to control the circuit breaker
Here, there is also a provision of changing the password. The system is fully controlled by the 8 bit microcontroller from 8052 family which has an 8KB of ROM for the program memory. A matrix keypad is interfaced to the microcontroller to enter the password while a relay driver IC is used to switch ON / OFF the loads through relays. The complete circuit is built with on board power supply. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator which is required for the operation of the microcontroller and other components.
(Additional Shipping charges may incur)
|8051 series Microcontroller||1||350|
|Relay Driver IC||1||35|
|Voltage Regulator 7805||1||15|
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