WORKING CIRCUIT DIAGRAM
COMPONENTS:-
1.9V/12V BATTERY
2.LED
3.LDR
4.RESISTOR 1K, 470 OHM
5.BC 547 TRANSISTOR
6.CONNECTING WIRES
7.BREAD BOARD
8.BATTERY CONNECTOR
WAY TO PROCEED :-
OPERATION
COMPLETE CIRCUIT ON BREAD BOARD
WORKING WITH LDR
PROCEDURE :-
1. CONNECT THE CIRCUIT AS SHOWN IN THE FIGURE
2.RESISTOR IS CONNECTED WITH LED IS TO PROTECT IT .
3.MAKE SURE & IDENTIFY LED ANODE AND CATHODE CONTACTS.
4.IDENTIFY TRANSISTOR EMMITTER ,BASE AND COLLECTOR.
5.COMPLETE THE CONNECTIONS AS SHOWN IN THE CIRCUIT.
6.GIVE SUPPLY FROM BATTERY.
7.NOW, MAKE THE LDR ENVIRONMENT INTO DARKNESS
THEN THE LIGHT WILL GLOW AND VICE VERSA.
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