The difference between a constant pressure dimmer and a constant current dimmer.
The constant current dimmer can be used to drive 1 ~ 12 LED light beads 1 ~ 3W. At present, the LED lamp in my hand is 8W T5, 220 rated voltage, and 120 light bulb should choose which dimmer
Constant pressure is used in incandescent lamps, which are characterized by changes in brightness over voltage. The constant current dimming is used for leds now, and leds are characterized by changes in brightness over current.
A, dimmers An electrical device that changes the light flux and the level of illumination in the lighting device. The large capacity and the system is called the dimming device. The basic principle is to change the current effective value of the input source to achieve the purpose of the dimming. The dimmer can be classified by means of control and use. The control mode can be divided into a resistor dimmer, a modulator, a magnetic amplifier and an electronic dimmer. It is divided into civil dimmer, screen stage dimmer, airport lamplight dimmer and day light integrated control system. The commonly used thyristor is composed of the main circuit, the trigger circuit, the control circuit and the feedback system.
