What is the working principle of electronic colored lights?

The working principle of electronic lanterns is usually to control the brightness of light bulbs by controlling a group of diodes or triodes through a control circuit. The control circuit controls the conduction state of the diode or triode by changing the current or voltage, thus adjusting the brightness of the bulb.

When the voltage passes through the diode, the diode will emit light. The greater the current intensity through the diode, the stronger the light emitted by the diode. By changing the current or voltage to control the conduction state of the diode, the brightness of the bulb can be adjusted.

Triode works in a similar way. By controlling the control circuit of the triode, the conduction state of the triode is controlled, so as to control the brightness of the bulb.

The control circuit of electronic lanterns often uses a microcontroller to control the brightness of the lights, and the microcontroller can control the brightness and color of the lights through the input electrical signals.