555 new high frequency fluorescent lamp circuit

Published:2011/5/22 19:42:00 Author:TaoXi | Keyword: new, high frequency, fluorescent lamp | From:SeekIC

As the figure 17-21 shows, the high-frequency fluorescent lamp circuit is composed of the step-down rectifier circuit, the high-frequency oscillator circuit and the power driving stage.etc. This kind of light has no scintillation effect of the common fluorescent lamp (Working frequency is 50Hz), so it saves the ballast and starter. The AC step-down circuit and the bridge type rectifier circuit supply the power supply voltage of VDD=+15V to the 555. The astable multivibrator is composed of the IC1(555) and RP1，D7，C5, f=1.44/RP1C5, the parameters of the figure has the oscillation frequency of 50kHz. IC1's output square wave drives the FET power transistor 2SK320.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/555_new_high_frequency_fluorescent_lamp_circuit.html

Print this Page | Comments | Reading(3)