| 摘要 |
PURPOSE: A LED(Light Emitting Diode) lamp is provided to induce a ballast stabilizer including a heating signal operation circuit loop to be normally operated by constructing filament resistance using a thermistor. CONSTITUTION: An LED lamp includes electrodes(P1~P4), thermistors(SR1,SR2), and rectification units(D1,D2). The thermistors form impedance corresponding to filament at both ends of the electrode. The rectification units rectify the output signal of a ballast stabilizer. The LED lamp includes a zener-diode(ZD1) for protecting a circuit from over voltages and a high current and LED(LED1~N). The LED lamp is composed of a frequency distinction unit(U1) and a constant current control unit(U2). The frequency distinction unit turns on or off smoothing condensers(C1,C2) by reading a frequency signal. The constant current control unit applies a current to the LED. The mounting state of the LED lamp is recognized in the heating signal generation state of the ballast stabilizer by mounting the thermistor at both ends of the electrode. |
