555 high voltage generator circuit

Published:2011/5/23 20:43:00 Author:TaoXi | Keyword: high voltage, generator circuit | From:SeekIC

As the figure 16-18 shows, the high voltage generator uses the 555 as the core, the oscillation voltage is boosted by the step-up transformer. The astable multivibrator is composed of the 555 and R1，R2，C1, the oscillation frequency f=1.44/(R1+2R2)C1, it is about 2000Hz. The 555 oscillation square-wave is amplified by VT1, and is boosted by transformer T1, an then it is rectified by the high-pressure reactor D1, at last we get the 3-5kV DC voltage. The D1 reverse breakdown voltage is higher than 15 kV, VT1's Vced>50V. The transformer T1 outputs the transformer ignition coil by using the 9-12 inches television. The secondary coil is binded by 30 turns of high strength enameled wire with the diameter of 0.6mm.



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