Automatic Night Lamp

This circuit is live in Circuit Canvas. Open it to explore every part and wire, or make your own copy to change values, swap parts and build your own version. Free, right in your browser.

This is an automatic night lamp. The lamp turns on automatically at night. Tweak the value of R2 (or replace with a potentiometer) to adjust the amount of light needed to turn the lamp on/off.

Automatic Night Lamp Parts List

Battery
12V
Lamp
Works with 12V
Q1
NPN
Q2
nMOS
R1
Photoresistor (1k-200k)
R2
1000 Ω
R3
10 kΩ

Make it your own

Every circuit here is a live project in Circuit Canvas, not just a picture. Copy this one and change a value, swap a part or move it to a stripboard: the schematic and the breadboard layout are linked, so a part added to one appears in the other.

Or start from a blank canvas and draw your own circuit, with thousands of ready-made parts.