Saturday, September 13, 2014

Morning Alarm Wiring diagram Schematic Using LDR

Morning




Description

 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



No comments:

Post a Comment