Automatic Street
Light:
Very sensitive
Uses timer IC
555
|
Automatically lights up during
night
|
Components:-
1) 9V battery with
snap
2)LDR
3)Variable resistance 100K
ohms
4)Resistance 470
ohms
5)LED
6)IC 555
7)Switch
Cost including
Shipping:
Item =
Automatic Street
Light
India = Rs:230/ $5.75 USD
Other Country = $35.00
USD
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TRANSFORMER
FOUR TONE SIREN
Interesting electronics project for student and hobbyist. Easy circuit to
build.
