_5_V_AND_±6_OR_±12V

Published:2009/7/16 22:24:00 Author:Jessie | From:SeekIC

Three power supplies for experimental use are achieved with only one transformer. LM309K regulates 5-V supply. Other two supplies are regulated by 6.2-V zeners in conventional regulator; shorting out one zener in each with gang switch reduces output to 6 V.- Design a Circuit Designer!, 73 Magazine, Oct. 1977, p 152-153.



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