8w fluorescent light electronic ballast circuit

Published:2011/8/22 21:13:00 Author:muriel | Keyword: 8w , fluorescent light , electronic ballast | From:SeekIC

The circuit uses SIPMOS transistors, the advantages of itare control circuit without amplifier, high efficiency, operating frequencycan achieve 100kHz. The voltage of circuit can be10~16V. Switching transistor BUZ20 is controlled by the multivibrator, the oscillation frequency isadjusted by the 5kΩ potentiometer. Transformer with ferrite core, primary winding 1-2 turns and the 33nF capacitorformthe series resonant circuit, when it is blocking, the FET drain voltage is about 60V. In the connected period, the forward resistance of the circuit makes oscillations quickly decay, only about 1~2 times of the battery voltage.



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