| 摘要 |
The present invention relates to a fluorescent lamp compatible type LED control circuit and, more specifically, a fluorescent lamp compatible type LED lamp control circuit, which is capable of replacing a fluorescent lamp with an LED lamp without replacing lighting fixtures and ballast stabilizers. The fluorescent lamp compatible type LED lamp control circuit according to the present invention includes: an LED module; a first electrode and a second electrode; a rectifying unit; a PWM drive IC connected to (+)(-) output ends of the rectifying unit to perform the pulse width modulation of current for driving the LED module and supply the PWM-modulated current to the LED module; a constant current control unit configured to measure current outputted to the LED module and adjust the PWM drive pulse width of the PWM drive IC according to the measured current; a switching unit connected to (+)(-) output ends of two bridge diodes, respectively, to be switched only when a ballast stabilizer for an electronic fluorescent lamp is connected to the first and second electrodes; and a switching cooperating unit having one end connected to the constant current control unit and the other end connected to the switching unit to be driven upon switching of the switching unit, and having a zener diode connected to the LED module in series. [Reference numerals] (90) LED module |
