Detect and Convert 110vac\220vac to 220vac

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qashq11

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Hi all,

Our system have designed to work at 220vac.
However, our clients may use the 110vac network or the 220vac network so we want to add a generic conversion module.

The conversion will performed with a transformer that can convert 110vac\220vac to 220vac (depends on the pins).
My concept is to use a detector (which detects the 110vac, or 220vac connection) and short it to the appropiate pins of the transformer.

The problem is that I don't know how to detect that a 110vac supply?

Any help?
 

one method is convert your ac to dc using rectifier and use voltage divider circuit to convert 230/110 dc to low voltage (2 to 5v) and read by a micro controller or you can use some comparator circuit for find the voltage
 

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