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#1
This is my another DIY. Neutral light for Maruti 800 using simple light detector circuit.
Things needed:
LDR: 6 Rs.
BC547: 1.50 Rs.
1K: 1 Rs.
Laser: 25 Rs.
Led holder: 1 Rs.
10K POT: 5Rs.
IN4007: 1 Rs.
Screw Clip: 10 RS.
The transistor is used as a comparator, which compares the preset resistance level and the LDR resistance level with reference to ground. Light falling over the LDR from the Laser instantly lowers its resistance and allows more current to flow to the base of the transistor.
Which in turns the transistor conducts and activates the Neutral light.
Things needed:
LDR: 6 Rs.
BC547: 1.50 Rs.
1K: 1 Rs.
Laser: 25 Rs.
Led holder: 1 Rs.
10K POT: 5Rs.
IN4007: 1 Rs.
Screw Clip: 10 RS.
The transistor is used as a comparator, which compares the preset resistance level and the LDR resistance level with reference to ground. Light falling over the LDR from the Laser instantly lowers its resistance and allows more current to flow to the base of the transistor.
Which in turns the transistor conducts and activates the Neutral light.