Traditional analog control lamp brightness adjustment method

The traditional analog control lamp brightness adjustment method is as follows.

1. Use the method of adjusting voltage: change the brightness of the lamp by adjusting the voltage. This method requires the use of equipment such as an adjustable power supply or transformer to adjust the voltage to a suitable range to adjust the brightness of the lamp.

2. Use the method of adjusting current: change the brightness of the lamp by adjusting the current. This method requires the use of devices such as adjustable current sources or resistors to adjust the current to a suitable range to adjust the brightness of the lamp.