6_V_FOR_CALCULATOR

Published:2009/7/14 3:57:00 Author:May | From:SeekIC

Can be mounted in housing of calculator or small transistor radio, for operation from AC line. D1 and D2 produce 15 VDC across filter capacitor C2 as supply for inverter Tr1 operating at 13 kHz. Transformer is wound with No. 37 wire on small core such as Phillips P14/8 337 pot core. Primary windings are bifilar. Use grounded shield to reduce radiated switching noise.-M. Faulkner, Miniature Switch Mode Power Supply, Wireless World, Oct. 1977, p 65.



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