_15_V_TO__12_V

Published:2009/6/30 2:44:00 Author:May | From:SeekIC

Simple transformerless power converter uses 555 timer in self-triggered mode as square-wave generator, followed by voltage-doubling rectifier. Values shown for R and C give frequency of about 20 kHz, which permits good filtering with relatively small capacitors. Maximum load current is about 80 mA.—M. Strange, IC Timer Makes Transformerless Power Converter, EDN Magazine, Dec. 20, 1973,p 81.



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