facing problem in power supply

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raksha singh

Joined Feb 14, 2011
9
hello
i am trying to design a voltmeter in that i am not getting how i wil convert 230v ac from the auxillary supply to 5vac .throuh that i can power my controller with 5vdc .
 

soda

Joined Dec 7, 2008
177
Hi,
You need a transformer to bring the voltage down to 5v

Just remember you still need a rectifier and capacitor to change the ac volts to dc volts

Have a look at the schematic to get the basic idea.
 

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