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Day and Night switch and Water level detector

An interactive LED, transistor, resistor and LDR circuit built in the DCACLab online simulator by Phindile Mjamba.

Preview of Day and Night switch and Water level detector
Open in the lab Embed The simulation runs as a demo that pauses after two minutes; open it in the lab to keep going.

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What's inside

  • 2× Battery
  • 5× Resistor (32.8 kΩ, 1.19 kΩ, 1.01 kΩ, 2.19 kΩ)
  • 4× LED
  • 2× Transistor
  • 1× LDR

Tags

LDR LED Battery Resistor Transistor

About

By Phindile Mjamba
Saved August 31, 2025 · updated January 15, 2026
998 views
Page: dcaclab.com/circuits/85106-day-and-night-switch

Embed this circuit

<iframe src="https://dcaclab.com/experiments/85106-day-and-night-switch/iframe" width="560" height="410" frameborder="0"></iframe>

Cite: Mjamba, P. (2025). Day and Night switch and Water level detector. DCACLab. https://dcaclab.com/circuits/85106-day-and-night-switch

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