Patent ID: 6603275
Filing Date: 2003-08-05
Classification: H05B

Abstract:
An electronic starter for fluorescent lamps, the electronic starter comprising:a full-wave rectification circuit having a first output terminal arid a second output terminal for converting an incoming AC current to a DC current to be outputted through the first and second output terminals; a preheating circuit, herein the DC current is transferred to the preheating circuit that is mainly formed with a MOSFET transistor Q2 having a drain and a gate, wherein the sin of the MOSFET transistor Q2 is connected to the first output terminal of the full-wave rectification circuit for controlling the preheating of the fluorescent tube; and a power switch arid locking circuit, wherein the power switch and locking circuit is mainly formed with a transistor Q1 having a collector connected to the gate of the MOSFET transistor Q2 for cutting off the preheating circuit; wherein the MOSFET transistor Q2 further as a source connected through a resistor R6 and a diode D6 in parallel to the second output terminal of the full-wave rectification circuit, and the gate of the MOSFET transistor Q2 is connected through a resister R4 to the drain of the MOSFET transistor Q2 and then further to the power switch and locking circuit.