LED PWM LED A Light Ccontrol Circuit of Electronic Ballast for LED with Dimming Contol Fucntion and a LED Converter for PWM Control using it

摘要

The present invention is a dimming circuit device 200 of the electronic ballast for the LED bulb having a dimming control function, between the driving circuit unit 250 for dimming control of the LED bulb 100 and the bridge diode 210 connected to the power supply side A combination of a DiAc start-on circuit including an RC charge / discharge circuit composed of a resistor R3 '(220') and a capacitor C3 '(230'), and a breather circuit. 280 is connected between the output terminal of the bridge diode 210 and the RC charge / discharge circuit composed of the resistor R3 '220' and the capacitor C3 '230' of the DIAC start-on circuit. Is connected in parallel with the driving circuit unit 250, and the start-on stabilization diode D3'310 is inserted between the output terminal of the bridge diode 210 and the breather circuit 280, and the capacitor of the breather circuit 280 Start-on stabilization to prevent the charge stored in C4) from being applied to the START-ON circuit. A dimming circuit device of an electronic ballast for an LED bulb having a dimming control function, which is configured to form a start-on stabilization part 300 by connecting an anode direction of the ion D3 '310 to a DIAC circuit part input. to provide.