r/electronicsnebula

Image 1 — LDR Circuit used in Automatic Street Lights

Image 2 — LDR Circuit used in Automatic Street Lights

Image 3 — LDR Circuit used in Automatic Street Lights

Image 4 — LDR Circuit used in Automatic Street Lights

Image 5 — LDR Circuit used in Automatic Street Lights

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LDR Circuit used in Automatic Street Lights

2N3904 BJT is used in this LDR circuit.

u/SpecialistRare832 — 6 days ago

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Charging & Discharging Circuit of the Capacitor (Time Constant = 1 second)

If Resistor = 100 kilo ohm & Capacitor = 10 micro farad

Then,

Time Constant = RC = 1 s

And,

Full charge/discharge time ≈ 5(Time Constant) ≈ 5 s

u/SpecialistRare832 — 14 days ago