Single chip voltage converter by HV4205E
With HV4205E you can build a simple single chip voltage converter. With IC and a few external components connected like in the schematic you can obtain dc stabilized voltages between 5 to 24V directly from main power source (100 to 260V ac). The maximum output current is 50mA.
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Read more source:
http://apowersupply.com/single-chip-voltage-converter-112.html#more-112
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