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Isolated SMPS circuit

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dmta

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Dear all,

I need a circuit for a 2 output (isolated) SMPS which can be connected to the 230V 50Hz mains. It is used to power a PIC micro (5V) and a sim900 device (3.2V to 4.8V 2A). Can you please help me out.

Best regards
 

search Power Integrations ref designs. its program PIexpert helps you to design circuit and transformer.
 

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