① Set dimming reference level. LED Down lights

 (1) CNC dimming electronic ballast composition and working principle

LED Lighting china

NC dimming electronic ballast circuit should contain the following sections: EMI filter, rectifier, power factor correction, electronic ballast output stage and CNC dimming control circuit shown in Figure 2. The dimmable electronic ballasts using IR2159 circuit diagram shown in Figure 3.

Ceiling Light 

NC dimmable ballast also contains a microcontroller, shown in Figure 4, the micro-controller can be implemented using the electronic ballast and a computer network (eg DALI) control data between the transmission and reception of information. Microcontroller has the following features:

① address information stored in electronic ballasts.

② receiving user instructions.

①    Set dimming reference level.

  LED Down lights 

④ receiving control information from the electronic ballast (such as lamp failure).

⑤ electronic ballast operating status information then transmitted back to the user (such as a lamp operating status display).