230volt ac input 110 volt ac output transformerless power supply

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deandlmcs

Joined Jan 12, 2014
4
Hi I have 5 off 3 phase contactors which was sent with the wrong coil voltage and will cost more to send back than they cost so i want to build a small psu for each of them however I cannot seam to find anything on line without a transformer it only needs to me a small supply 70 milliamp max to operate the coil so any help would be very much needed many thanks.
 

ErnieM

Joined Apr 24, 2011
8,009
It's not a recommended thing to do, dangerous, wasteful, prone to have problems.

Not to mention we don't allow this type of project here.
 
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