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Electronics projects circuits help

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patelhirenh

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Electronics projects circuits help
 

Need Help for Digital Mains Voltage Indicator circuit. i am working on this circuit but we don't under stand the setting of voltage level.


**broken link removed**

**broken link removed**
 

Digital Voltmeter circuit, anybody know about this circuit?

More Information - http://www.diy-electronic-projects.com/p215-Led-display-digital-Voltmeter

schematic.gif
 

Hi...

any body having 6V or 12V D.C to 500V (D.C) converter circuit?
 

Hi....
Any body having 0V to 230V A.C variable circuit?
Please share.
Help
 

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