Circuit showing a morning alarm.Here we have used a switching transistor.When the sun rise up ldr is low resistance so the ldr is conduct and a positive volt coming to the base of the Q1 there for the transistor will switch.This time the buzzer is ON . Adjust the preset control the intensity of light.Manually cut off the power.Are you interested please comment and join this site
Component Required
Resistor 4.7k preset , LDR
Transistor BC 548
Buzzer
plaese if you have a proper circuit diagram of this project can umail me @
ReplyDeletesanamsritam@gmail.com as the url is not working and im in urgent need to do this project if possible please give me some guidelines to do this project as this is the simplest circuit.