Vidyasagar Academy Wishes a Very Happy, Healthy & Prosperous Diwali to all our Students & Teachers!
- PE-B1: LED on/off Circuit
- PE-B11: DC Motor Speed Control Circuit
- PE-B13: Automatic Street Light Control Circuit
In this circuit during evening the LED (street light) glows and in morning the LED (street light) become automatically OFF.
Page Contents
show
Details of material required
About Components
- Resistor: It protects the LED from burning.
- Transistor: It has 3 terminals – collector, base and emitter. The emitter is shown with arrow in the symbol.
- LDR: It is light sensitive device. When light falls on it, its resistance decreases. When it is in dark its resistance is maximum.
- Capacitor: It stores electric energy of battery for some time. It is called temporary storage device.
Circuit diagram & Working
When light falls on LDR, the street light i.e. white LED is OFF. When the LDR is in dark, the streetlight i.e. the white LED becomes ON.
Connection Diagram
Buy complete kit and workbook of Practical Electronics online course. The contains 15 basic projects of practical electronics with complete details. It will help you construct more advanced circuits in practical electronics.
