(LA) Four- Electrode Fluorescent lamp and the circuit for arranging the same

(LA) a four-electrode fluorescent lamp having four filaments in a fluorescent lamp; each of the filament having two leads for being connected to a positive and a negative electrodes of a power source. a resistor is serially connected between a lead of one selective filament and a lead of another selective filament. Each of the filament is controlled by a transistor. A pair of capacitors are used to adjust the switching current of a pair of two transistors. The base of the transistor is connected to to respective diode set through a current limiting resistor. Each of the transistor is connected to a diode set. The four diodes are serially connected as a loop with two ends of the loop being connected to two ends of an AC power source. Thereby, a circuit for an alternative lighting four - electrode fluorescent lamp is formed.