3 Useful circuit based on BC547 & LDR

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3 simple circuit based on BC547 & LDR
component required -
1th project
-bc547 https://amzn.to/2lkbD62
diode 1n4007 https://amzn.to/2yVrSjD
-2.2k resistor - https://amzn.to/2lkbIXo
-led
2nd project
BC547 https://amzn.to/2lkbD62
-LDR - https://amzn.to/2OFRebZ
-100k ohm - https://amzn.to/2lkbIXo
-relay 12 volt SPDT
3rd project
BC547 https://amzn.to/2lkbD62
-5k ohm - https://amzn.to/2lkbIXo
-LDR - https://amzn.to/2OFRebZ

8W Filament LED Bulb B22 - https://amzn.to/2CunskR

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component BUY link :-
Transistor BC547 - https://amzn.to/2lkbD62
Resistor kit - https://amzn.to/2lkbIXo
Led strip - https://amzn.to/2I3PgLe
12 volt Power supply - https://amzn.to/2HZkyCP
Potentiometer - https://amzn.to/2I1p43H
Relay 12v SPDT - https://amzn.to/2tV9zoO
840 Points Bread Board - https://amzn.to/2OB9O55
Printed Circuit Board, 5 Pieces - https://amzn.to/2ylLKcc
Diode n4007 - https://amzn.to/2yVrSjD
Led Light - https://amzn.to/2tPANx2
12 v Power Supply - https://amzn.to/2KFd9hz
Battery 12 volt - https://amzn.to/2Nd29WM
LDR - https://amzn.to/2OFRebZ

My favrate tools-
Soldering Iron - https://amzn.to/2lJ8vka
Voltage Tester - https://amzn.to/2KxZaKd
Digital Line Tester - https://amzn.to/2KxZBUR
Ratcheting Screwdriver - https://amzn.to/2Kl3VaA
Plier - https://amzn.to/2lNGOHg
Nose Plier - https://amzn.to/2KFb7hr
Wire Stripping Plier - https://amzn.to/2yWDiUn
Side Cutting Plier - https://amzn.to/2Ky0rkt
CABLE CUTTER - https://amzn.to/2Kyc3UC
Taparia BDS 125 Steel Bit Driver Kit (Green) - https://amzn.to/2Ljhp2v

Clamp Meter 1000A Tester - https://amzn.to/2KusPnJ
Generic Digital Multimeter - https://amzn.to/2tKJY2C
Multimeter (not for professional use) - https://amzn.to/2Ky1Zeh