Experimental principle:

This is a typical switch circuit. The battery provides power. The switch controls the on/off of the current. When the switch is turned on, the switch current flows through the switch and finally passes through the led lamp. The electric power is converted into light energy, thus making the small desk lamp emit light.

Warm tip:

1, this material does not contain two 5th batteries, please bring your own.

2. Because this series of products are all hand-made, they cannot be compared with those produced by mechanical industrialization in dimensional accuracy. For buyers with high dimensional accuracy requirements, please be careful!