Power supply working status indication circuit

Published:2011/5/5 2:22:00 Author:Ecco | Keyword: Power supply , working status , indication circuit | From:SeekIC

In the circuit shown as the chart, LED-R is used as a power indicator, LED-G is load HL (light) work status indicator. When the 220V AC electric supply is normal, LED-R emits red light. When switch S is closed, HL is lit, LED-G emits green light, then LED-R is also the lit, so when S is closed, the two-tone LED emits orange color.



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